Lee, Pohang-Si
Bae Geun Lee, Pohang-Si KR
Patent application number | Description | Published |
---|---|---|
20140377453 | Insulating Adhesive Composition for Metal-Based Copper Clad Laminate (MCCL), Coated Metal Plate Using Same, and Method for Manufacturing Same - The present invention relates to an insulating adhesive composition for metal printed circuit board, an adhesive-coated metal plate using the same, and a method for manufacturing the adhesive-coated metal plate. The adhesive composition according to the present invention forms an adhesive layer that is excellent in terms of adhesion to a copper foil, electrical insulating properties, and thermal resistance. The composition contains a specific epoxy resin, a curing agent and alumina. According to the present invention, in coating the metal plate with the solvent type adhesive, a roll coating method is used to perform a continuous coating process on the metal plate, thereby improving productivity when compared to the general method using a sheet type adhesive film. | 12-25-2014 |
Baekhee Lee, Pohang-Si KR
Patent application number | Description | Published |
---|---|---|
20140236262 | APPARATUS FOR MEASURING AND TREATING DYSPHAGIA - According to one embodiment of the present invention, an apparatus for measuring and treating dysphagia may comprise: one or more dysphagia measuring sensor units attached to the neck of a patient; one or more electrical stimulation electrode units attached to the neck of the patient to provide electrical stimulation to the neck of the patient in accordance with the dysphagia signal sensed by the dysphagia measuring sensor units so as to resolve the dysphagia; and a control unit which controls the dysphagia measuring sensor units and the electrical stimulation electrode units. Accordingly, the apparatus for measuring and treating dysphagia according to the one embodiment of the present invention has the dysphagia measuring sensor units, and the electrical stimulation electrode units which provide electrical stimulation to the neck of the patient in accordance with the dysphagia signal sensed by the dysphagia measuring sensor units so as to resolve the dysphagia, thus simultaneously enabling convenient measurement of the dysphagia and treatment of the dysphagia using the electrical stimulation electrode units. | 08-21-2014 |
20140340642 | PERSONAL-COMPUTER-BASED VISUAL-FILED SELF-DIAGNOSIS SYSTEM AND VISUAL-FIELD SELF-DIAGNOSIS METHOD - Provided is a personal computer-based visual field self-testing system of increasing an opportunity of a glaucoma early diagnosis through a self-testing together with improvement of a size reduction, installation, and easiness in movement of a visual field testing system by using a personal computer. | 11-20-2014 |
Beom-Seok Lee, Pohang-Si KR
Patent application number | Description | Published |
---|---|---|
20090139578 | CENTRIFUGAL FORCE BASED PLATFORM, MICROFLUIDIC SYSTEM INCLUDING THE SAME, AND METHOD OF DETERMINING HOME POSITION OF THE PLATFORM - Provided are a centrifugal force based platform formed to be rotatable and including a home mark having a retro-reflective property of light, and a centrifugal force based microfluidic system including the platform. The method of determining a home position of the centrifugal force based platform includes: rotating the platform formed and including a home mark having a retro-reflective property of light; emitting light from a light-emitting unit to the platform; and detecting the emitted light, which is retro-reflected by the home mark, in a light-receiving unit, and then determining the home position of the platform based on the detected light. | 06-04-2009 |
20090322828 | DEVICE FOR PRINTING DROPLET OR INK ON SUBSTRATE OR PAPER - A device for printing a droplet onto a substrate includes: a droplet generating member which is needle-shaped and comprises a receiving portion disposed vertically to receive a solution, and a discharge hole connected to the receiving portion and formed on a bottom of the receiving portion so that the solution can be discharged from the receiving portion; a substrate disposed below the droplet generating member, the substrate includes a target portion to which the droplet discharged from the discharge hole of the droplet generating member is dropped and attached; a voltage applier applying a voltage to the droplet so that the droplet can be dropped onto the target portion of the substrate; a volume measuring unit measuring the volume of the droplet; and a droplet control unit maintaining the volume of the droplet at a predetermined level based on the measured volume of the droplet. | 12-31-2009 |
Bong-Kee Lee, Pohang-Si KR
Patent application number | Description | Published |
---|---|---|
20130071918 | CELL CULTURE CONTAINER AND METHOD FOR FABRICATING THE SAME - The present invention relates to a cell culture container, which enhances the efficiency of proliferation and differentiation of various cells including stem cells. The cell culture container according to an exemplary embodiment of the present invention includes a cell culture surface for adhering adult stem cells thereon to proliferate and differentiate the adult stem cells, and the cell culture surface includes a protrusion having a lotus leaf surface reproduction structure, which is disposed on the cell culture surface. | 03-21-2013 |
Bong-Keun Lee, Pohang-Si KR
Patent application number | Description | Published |
---|---|---|
20130284713 | Flux-Cored Arc Welding Wire for Providing Superior Toughness and Weldability to a Welded Joint at a Low Temperature, and Welded Joint Using Same - Provided are a flux cored arc welding wire able to improve low-temperature toughness of a weld joint and a weld joint using the same, in which the flux cored arc welding wire includes 0.01 wt % to 0.1 wt % of carbon (C), 0.3 wt % to 1.4 wt % of silicon (Si), 1.0 wt % to 3.0 wt % of manganese (Mn), 4.0 wt % to 7.5 wt % of titanium (Ti)+TiO, 0.01 wt % to 3.0 wt % of nickel (Ni), 0.01 wt % to 0.2 wt % of boron (B), 0.02 wt % to 0.42 wt % of yttrium (Y) or 0.02 wt % to 0.56 wt % of a rare earth metal (REM), and iron (Fe) as well as other unavoidable impurities as a remainder. | 10-31-2013 |
Bo-Su Lee, Pohang-Si KR
Patent application number | Description | Published |
---|---|---|
20140004215 | COMPOSITIONS AND METHODS FOR MANAGING WEIGHT | 01-02-2014 |
20150072953 | COMPOSITIONS AND METHODS FOR JOINT HEALTH - The present disclosure provides mixtures of prenylated flavonoids, stilbenes, or both with flavans or curcuminoids or both capable of modulating joint inflammation, joint pain, joint stiffness, cartilage degradation, or improving mobility, range of motion, flexibility, joint physical function, or any combination thereof. Such a mixture of prenylated flavonoids, stilbenes, or both with flavans or curcuminoids or both can optionally be used in combination with other joint management agents, such as non-steroidal anti-inflammatory agents/analgesics, COX/LOX inhibiting agents, glucosamine compounds, neuropathic pain relief agents, or the like. | 03-12-2015 |
Byeong Eon Lee, Pohang-Si KR
Patent application number | Description | Published |
---|---|---|
20080281463 | Method of Non-Linear Process Planning and Internet-Based Step-Nc System Using the Same - The present invention relates to a method of creating a non-linear process plan and an Internet-based STEP-NC system using the same, and more particularly, to a method of creating a non-linear process plan, wherein the non-linear process plan including information on a variety of alternative processes and machining sequences is established in consideration of situations in the field, thereby autonomously dealing with abnormal situations while executing optimal machining, and to an Internet-based STEP-NC system, wherein a STEP-NC part program in an XML format is created based on the established process plan so that process information can be easily exchanged with other systems via the Internet. Since the present invention provide a plurality of machining alternatives to the field, and thus, allow a STEP-NC machine tool to execute machining optimized depending on field situations and to autonomously deal with abnormal situations that may occur during machining. | 11-13-2008 |
20090299979 | PRODUCT LIFECYCLE INFORMATION MANAGEMENT SYSTEM USING UBIQUITOUS TECHNOLOGY - A product lifecycle information management system using ubiquitous technology is provided. The system includes a service manager that comprises a service repository for registering a service using product information in a product lifecycle and multiple interface agents (IAs) for providing an interface for the service registered in the service repository. The system further includes multiple neighboring units that are connected to the service manager in order to register the service in the service manager and provide the service or that use the service registered in the service manager. The neighboring units include an integrated data storage for storing an integrated product lifecycle data model and ontology data, a Device to Ubiquitous (D2U) interface unit for providing an interface with a ubiquitous apparatus, and an external system interface unit for providing interfaces with a user terminal and an external application system. | 12-03-2009 |
Byeong-Joo Lee, Pohang-Si KR
Patent application number | Description | Published |
---|---|---|
20110012285 | METHOD FOR FABRICATING 3D STRUCTURE HAVING HYDROPHOBIC SURFACE USING METAL FOIL - A method for fabricating a 3D (three-dimensional) structure such that the 3D structure has a surface with hydrophobicity by using a metal foil such as an aluminum foil is disclosed. The method includes preparing a metal foil base by attaching a metal foil on an outer surface of a predetermined-shaped 3D structure; anodizing the metal foil base; coating a polymer material on the outer surface of the metal foil base material to form a negative replica structure; forming an outer structure by covering an outer surface of the negative replica structure with an outer formation material; and removing the metal foil base. | 01-20-2011 |
20110042350 | METHOD FOR FABRICATING 3D STRUCTURE HAVING HYDROPHOBIC SURFACE BY DIPPING METHOD - A method for fabricating a 3D (three-dimensional) structure is disclosed to provide hydrophobicity to a surface of a 3D structure by using a dipping method in which a predetermined-shaped structure is immersed in a molten metal solution. The method includes: immersing a predetermined-shaped structure in a molten metal solution to coat a molten metal material on the surface of the predetermined-shaped structure; anodizing a metal base coated with the molten metal material; coating a polymer material on an outer surface of the metal-coated base to form a negative replica structure; covering an outer surface of the negative replica structure with an outer formation material; and removing the metal-coated base from the negative replica structure and the outer formation material. | 02-24-2011 |
Changwoo Lee, Pohang-Si KR
Cheong Jae Lee, Pohang-Si KR
Patent application number | Description | Published |
---|---|---|
20120290300 | APPARATUS AND METHOD FOR FOREIGN LANGUAGE STUDY - The apparatus for foreign language study includes: a voice recognition device configured to recognize a speech entered by a user and convert the speech into a speech text; a speech intent recognition device configured to extract a user speech intent for the speech text using skill level information of the user and dialogue context information; and a feedback processing device configured to extract a different expression depending on the user speech intent and a speech situation of the user. According to the present invention, the intent of a learner's speech may be determined even though the learner's skill is low, and customized expressions for various situations may be provided to the learner. | 11-15-2012 |
Chi Young Lee, Pohang-Si KR
Patent application number | Description | Published |
---|---|---|
20130243319 | METHOD AND APPARATUS FOR DEBLURRING NON-UNIFORM MOTION BLUR IN LARGE SCALE INPUT IMAGE BASED ON TILE UNIT - Provided is a method and apparatus for deblurring a non-uniform motion blur in an input image, that may restore a clearer image by dividing a large scale input image into tiles corresponding to partial areas, selecting, among the divided tiles, an optimal tile for a partial area most suitable for estimating non-uniform motion blur information, and effectively removing an artifact in an outer portion of a tile through padding of each tile. | 09-19-2013 |
Chong Soo Lee, Pohang-Si KR
Patent application number | Description | Published |
---|---|---|
20120128524 | STEEL WIRE ROD HAVING EXCELLENT COLD HEADING QUALITY AND HYDROGEN DELAYED FRACTURE RESISTANCE, METHOD OF MANUFACTURING THE SAME, AND MEHOD OF MANUFACTURING BOLT USING THE SAME - Provided are a high-strength, high-manganese steel wire rod having excellent cold heading quality and not requiring spheroidizing and quenching-tempering treatments during manufacturing a bolt and a method of manufacturing a bolt using the steel wire rod. The method of manufacturing a steel wire rod includes heating a steel containing 12 to 25 wt % of Mn within a temperature range of 1100° C. to 1250° C., hot rolling the heated steel within a temperature range of 700° C. to 1100° C., and cooling the hot rolled steel to a temperature of 200° C. or less and cold caliber rolling or drawing to manufacture a steel wire rod. | 05-24-2012 |
20120160378 | PREPARATION METHOD OF NANOCRYSTALLINE TITANIUM ALLOY AT LOW STRAIN - Provided is a method of preparing a nanocrystalline titanium alloy at low strain to have better strength. The present invention is characterized in that an initial microstructure is induced as martensites having a fine layered structure, and then a nanocrystalline titanium alloy is prepared at low strain by optimizing process variables through observation of the effects of strain, strain rate, and deformation temperature on the changes in the microstructure. | 06-28-2012 |
20140305554 | MANUFACTURING METHOD OF TITANIUM ALLOY WITH HIGH-STRENGTH AND HIGH-FORMABILITY AND ITS TITANIUM ALLOY - A method of manufacturing a titanium alloy with high strength and high formability includes preparing a material and equipment for manufacturing a titanium alloy, manufacturing a titanium alloy having a lamellar structure (martensite structure) by cooling the prepared material with water after performing heat treatment at the beta transformation temperature or more, and rolling that makes ultrafine grains by finishing forming of the titanium alloy at a plastic instability temperature by gradually decreasing the forming temperature in accordance with an increase of a strain after starting the forming at the plastic instability temperature of more, under a condition of a low strain in which the strain is 2.5 or less, after the manufacturing of a titanium alloy having a lamellar structure. | 10-16-2014 |
20140348696 | METHOD FOR IMPROVING MOULDABILITY OF MAGNESIUM-ALLOY SHEET MATERIAL, AND MAGNESIUM-ALLOY SHEET MATERIAL PRODUCED THEREBY - A method for increasing formability of magnesium alloy sheet and the magnesium alloy sheet prepared by the same are provided, in which the method includes the following steps: forming {10-12} twins in magnesium alloy sheet (step 1); and annealing the magnesium alloy sheet of step 1 (step 2). The present invention also provides the magnesium alloy sheet containing {10-12} twins prepared by the method. Accordingly, the room temperature formability and the warm formability are increased by forming {10-12} twins through deformation on the magnesium alloy sheet and subsequently performing annealing, because it is possible to artificially form {10-12} twins without increasing dislocations in the magnesium alloy sheet and accommodate the deformation generated during the forming via annihilation of the twins. | 11-27-2014 |
Do-Kwan Lee, Pohang-Si KR
Patent application number | Description | Published |
---|---|---|
20110129258 | CHARGING ROLLER FOR IMAGE FORMING APPARATUS AND MANUFACTURING METHOD THEREOF - Disclosed is a charging roller for an image forming apparatus capable of preventing the formations of surface scratches. The charging roller includes a roller shaft, a roller body formed on the roller shaft and a scratch prevention layer formed on the roller body. The scratch prevention layer contains inorganic crystal of polysilicate. | 06-02-2011 |
Dong Yeop Lee, Pohang-Si KR
Patent application number | Description | Published |
---|---|---|
20140082757 | TRANSFORMED CAENORHABDITIS ELEGANS AND METHOD FOR SCREENING FOR SUBSTANCES REGULATING GLUCOSE METABOLISM USING SAME - The present invention relates to a method for preparing a transformed | 03-20-2014 |
Dongyoung Lee, Pohang-Si KR
Patent application number | Description | Published |
---|---|---|
20130307653 | MAGNETOPLUMBITE-TYPE FERRITE MAGNETIC MATERIAL AND SEGMENT-TYPE PERMANENT MAGNET DERIVED THEREFROM - A ferrite magnetic material comprising a primary phase of a magnetoplumbite-type hexagonal ferrite, the primary phase having a composition represented by formula (I), can provide improved magnetic properties in terms of the residual magnetic flux density (Br), intrinsic coercive force (iHc), squareness (Hk/iHc), and maximum energy product (B.Hmax). Therefore, a segment-type permanent magnet derived therefrom can be used in the manufacture of small type motors for automobiles, motors for electric equipments as well as for home appliances, and other devices. | 11-21-2013 |
Eon Sik Lee, Pohang-Si KR
Patent application number | Description | Published |
---|---|---|
20130180360 | Method of Manufacturing Iron-Based Powder - A method of manufacturing iron-based powder includes providing an iron-based molten steel manufactured through a iron making process and a steelmaking process to a tundish; and performing water atomization over the molten steel discharged through a nozzle connected to the tundish. The iron-based powder is manufactured from the molten steel refined after a molten iron tapped from a iron making process is charged into a converter without a pre-treatment process of the molten iron, thus economically providing the highly clean iron-based powder. | 07-18-2013 |
Eunsung Lee, Pohang-Si KR
Patent application number | Description | Published |
---|---|---|
20140018538 | HIGH-VALENT PALLADIUM FLUORIDE COMPLEXES AND USES THEREOF - The present invention provides novel high-valent palladium complexes. The complexes typically include multi-dentate ligands that stabilize the octahedral coordination sphere of the palladium(IV) atom. These complexes are useful in fluorinating organic compounds and preparing high-valent palladium fluoride complexes. The invention is particularly useful for fluorinating compounds with | 01-16-2014 |
Eun Yeong Lee, Pohang-Si KR
Patent application number | Description | Published |
---|---|---|
20130177595 | NANO-VEHICLE DERIVED FROM TUMOR TISSUE, AND CANCER VACCINE USING SAME - The present invention relates to a cancer vaccine, and specifically, to a pharmaceutical composition for treating cancer containing a nano-vehicle derived from tumor tissue, and a method for treating cancer using the nano-vehicle derived from tumor tissue, and the like. According to the present invention, a nano-vehicle antigen derived from tumor tissue indicates a high yield while having properties similar to those of an exocellular vehicle, and can be variously modified, and is thus expected to be very useful for developing the cancer vaccine. | 07-11-2013 |
Eun Young Lee, Pohang-Si KR
Patent application number | Description | Published |
---|---|---|
20120159658 | EXTRACELLULAR VESICLES DERIVED FROM GRAM-POSITIVE BACTERIA, AND USE THEREOF - The present application relates to extracellular vesicles (EVs) derived from gram-positive bacteria. In detail, the present application provides animal models of disease using extracellular vesicles derived from gram-positive bacteria, provides a method for screening an active candidate substance which is capable of preventing or treating diseases through the animal models of disease, provides vaccines for preventing or treating diseases caused by extracellular vesicles derived from gram-positive bacteria, and provides a method for diagnosing the causative factors of diseases caused by gram-positive bacteria using extracellular vesicles. | 06-21-2012 |
20120192295 | COMPOSITION COMPRISING EXTRACELLULAR MEMBRANE VESICLES DERIVED FROM INDOOR AIR, AND USE THEREOF - The present application relates to a composition comprising extracellular membrane vesicles derived from indoor air. In addition, the present application provides a method for diagnosing, preventing and/or treating an inflammatory respiratory disease, lung cancer and the like using the extracellular membrane vesicles. In detail, the present application involves injecting extracellular membrane vesicles present in indoor air into an animal in order to prepare an animal respiratory disease model, and enables the search and/or discovery of drug candidates for preventing or treating respiratory diseases using the animal model. The present application provides a vaccine for preventing and/or treating respiratory diseases, to a method for diagnosing substances causing respiratory diseases, and to a method for inhibiting the activities of extracellular membrane vesicles in indoor air or removing the extracellular membrane vesicles from indoor air so as to prevent the occurrence and exacerbation of respiratory diseases. | 07-26-2012 |
Gang-Young Lee, Pohang-Si KR
Patent application number | Description | Published |
---|---|---|
20130056072 | COPOLYMER, ORGANIC SOLAR CELL USING THE SAME AND MANUFACTURING METHOD THEREOF - Disclosed herein are a 3,6-carbazole-containing copolymer, an organic solar cell comprising the copolymer in an organic material layer including a photoactive layer, and a method for fabricating the organic solar cell. | 03-07-2013 |
20140318625 | CONDUCTIVE POLYMER COMPRISING 3,6-CARBAZOLE AND ORGANIC SOLAR CELL USING SAME - The present invention relates a conductive polymer containing a 3,6-carbazole group represented by Chemical Formula 1 | 10-30-2014 |
Gary Geunbae Lee, Pohang-Si KR
Patent application number | Description | Published |
---|---|---|
20120197894 | APPARATUS AND METHOD FOR PROCESSING DOCUMENTS TO EXTRACT EXPRESSIONS AND DESCRIPTIONS - Disclosed is an apparatus and method for processing documents to extract expressions and descriptions. The apparatus for processing documents includes a document collection unit, which collects documents from websites and divides each of the collected documents into a script portion and a description portion to thus generate a script document and a description document, and an expression extraction unit, which extracts expression description sentences on the basis of the description document, and extracts expressions described by the expression description sentences from the script document. According to the invention, study material, including a pair that comprises an expression to be studied and a description thereof, can be automatically constructed. | 08-02-2012 |
20120290300 | APPARATUS AND METHOD FOR FOREIGN LANGUAGE STUDY - The apparatus for foreign language study includes: a voice recognition device configured to recognize a speech entered by a user and convert the speech into a speech text; a speech intent recognition device configured to extract a user speech intent for the speech text using skill level information of the user and dialogue context information; and a feedback processing device configured to extract a different expression depending on the user speech intent and a speech situation of the user. According to the present invention, the intent of a learner's speech may be determined even though the learner's skill is low, and customized expressions for various situations may be provided to the learner. | 11-15-2012 |
20150058014 | SYSTEM AND METHOD FOR MANAGING CONVERSATION - A conversation management system includes: a training unit that generates an articulation speech act and an entity name of a training corpus, that generates a lexical syntactic pattern, and that estimates a speech act and an entity name of a training corpus; a database that stores the articulation speech act, the entity name, and the lexical syntactic pattern of the training corpus; an execution unit that generates an articulation speech act and an entity name of a user, that generates a user lexical syntactic pattern, that estimates a speech act and an entity name of a user, that searches for an articulation pair corresponding to a user articulation at the database using a search condition including the estimated user speech act and the generated user lexical syntactic pattern, and that generates a final response by selecting an articulation template using a restriction condition including an estimated entity name among the found articulation pair; and an output unit that outputs a final response that is generated by the execution unit. | 02-26-2015 |
20150079554 | LANGUAGE LEARNING SYSTEM AND LEARNING METHOD - Disclosed herein are a language learning system and a language learning method. A language learning system includes a user terminal configured to receive utterance information of a user as a speech or text type and to output learning data transferred through a network to the user as the speech or text type, and a main server which includes a learning processing unit configured to analyze a meaning of the utterance information of the user, to generate at least one response utterance candidate corresponding to dialogue learning in a predetermined domain to induce a correct answer of the user, and to connect a dialogue depending on the domain and a storage unit linked with the learning processing unit and configured to store material data or a dialogue model depending on the dialogue learning. | 03-19-2015 |
Geun-Hee Lee, Pohang-Si KR
Patent application number | Description | Published |
---|---|---|
20100304026 | Method and Apparatus for Manufacturing a Nanowire - A method and an apparatus for manufacturing a nanowire are provided. The method for manufacturing a nanowire includes i) providing a source gas into a chamber, ii) controlling the temperature of a substrate received in the chamber separately from the temperature of the source gas, iii) forming a temperature gradient on the substrate, and iv) forming a nanowire having at least one growth condition selected from a group of growth speed and growth direction controlled according to the temperature gradient on the substrate. | 12-02-2010 |
Hak-Cheol Lee, Pohang-Si KR
Patent application number | Description | Published |
---|---|---|
20140261918 | ENHANCED WEAR RESISTANT STEEL AND METHODS OF MAKING THE SAME - Improved steel compositions and methods of making the same are provided. The present disclosure provides advantageous wear resistant steel. More particularly, the present disclosure provides high manganese (Mn) steel having enhanced wear resistance, and methods for fabricating high manganese steel compositions having enhanced wear resistance. The advantageous steel compositions/components of the present disclosure improve one or more of the following properties: wear resistance, ductility, crack resistance, erosion resistance, fatigue life, surface hardness, stress corrosion resistance, fatigue resistance, and/or environmental cracking resistance. In general, the present disclosure provides high manganese steels tailored to resist wear and/or erosion. | 09-18-2014 |
Hong-Ju Lee, Pohang-Si KR
Patent application number | Description | Published |
---|---|---|
20140334967 | WEAR RESISTANT STEEL HAVING EXCELLENT TOUGHNESS AND WELDABILITY - Provided is a wear resistant steel including 2.6 wt % to 4.5 wt % of manganese (Mn), carbon (C) satisfying (6-Mn)/50≦C≦(10-Mn)/50, 0.05 wt % to 1.0 wt % of silicon (Si), and iron (Fe) as well as other unavoidable impurities as a remainder, wherein a Brinell hardness of a surface portion is in a range of 360 to 440. The wear resistant steel further includes at least one component selected from the group consisting of 0.1 wt % or less (excluding 0 wt %) of niobium (Nb), 0.1 wt % or less (excluding 0 wt %) of vanadium (V), 0.1 wt % or less (excluding 0 wt %) of titanium (Ti), and 0.02 wt % or less (excluding 0 wt %) of boron (B) to complement the performance thereof. The wear resistant steel is characterized in that a microstructure includes martensite in an amount of 90% or more, and an average packet diameter of the martensite is 20 μm or less. | 11-13-2014 |
20150020928 | AUSTENITIC STEEL HAVING EXCELLENT MACHINABILITY AND ULTRA-LOW TEMPERATURE TOUGHNESS IN WELD HEAT-AFFECTED ZONE, AND METHOD OF MANUFACTURING THE SAME - Provided are an austenitic steel having excellent machinability and ultra-low temperature toughness in a weld heat-affected zone including 15 wt % to 35 wt % of manganese (Mn), carbon (C) satisfying 23.6C+Mn≧28 and 33.5C−Mn≦23, 5 wt % or less (excluding 0 wt %) of copper (Cu), chromium (Cr) satisfying 28.5C+4.4Cr≦57 (excluding 0 wt %), and iron (Fe) as well as other unavoidable impurities as a remainder, wherein a Charpy impact value of a weld heat-affected zone at −196° C. is 41 J or more, and a method of manufacturing the steel. | 01-22-2015 |
Hong-Kil Lee, Pohang-Si KR
Patent application number | Description | Published |
---|---|---|
20130284713 | Flux-Cored Arc Welding Wire for Providing Superior Toughness and Weldability to a Welded Joint at a Low Temperature, and Welded Joint Using Same - Provided are a flux cored arc welding wire able to improve low-temperature toughness of a weld joint and a weld joint using the same, in which the flux cored arc welding wire includes 0.01 wt % to 0.1 wt % of carbon (C), 0.3 wt % to 1.4 wt % of silicon (Si), 1.0 wt % to 3.0 wt % of manganese (Mn), 4.0 wt % to 7.5 wt % of titanium (Ti)+TiO, 0.01 wt % to 3.0 wt % of nickel (Ni), 0.01 wt % to 0.2 wt % of boron (B), 0.02 wt % to 0.42 wt % of yttrium (Y) or 0.02 wt % to 0.56 wt % of a rare earth metal (REM), and iron (Fe) as well as other unavoidable impurities as a remainder. | 10-31-2013 |
Hun-Kee Lee, Pohang-Si KR
Patent application number | Description | Published |
---|---|---|
20100063519 | SUTURE DEVICE FOR SURGICAL OPERATION - The present invention relates to a suture device for a surgical operation that makes it easy to suture a wound or an incision. A suture device for a surgical operation of the present invention includes: a suture needle that is curved with a needle eye at one end to be threaded with a first suture, and swings at an incision; a holder that supplies a second suture, rotates in one direction, and stops, corresponding to the swing of the suture needle to weave the first suture and the second suture and suture the incision; a first rotary member that is connected to a first shaft of the suture needle; a second rotary member that is connected to a second shaft of the holder; and a third rotary member that is provided between the first rotary member and the second rotary member, and connected to a third shaft to transmit torque to the second rotary member. | 03-11-2010 |
Hyun-Jin Lee, Pohang-Si KR
Patent application number | Description | Published |
---|---|---|
20090258650 | Apparatus and method for reduction of handover interruption time using estimated handover time negotiation in a broadband wireless communication system - An apparatus and method for reduction of a handover interruption time using an estimated handover time negotiation in a broadband wireless communication system are provided. A method for supporting a handover of a mobile station in a serving base station includes receiving a handover pre-notification response message including a residual estimated handover time from a target base station, determining a current residual estimated handover time using the residual estimated handover time, and exchanging the determined residual estimated handover time with the target base station. | 10-15-2009 |
20110103282 | METHOD AND DEVICE FOR CONTROLLING HAND-OVER MESSAGE TRANSMISSION POWER IN A MOBILE COMMUNICATIONS SYSTEM - The present invention relates to a method and a device for controlling the hand-over message transmission power of a mobile station in a mobile communication system. The present invention comprises the processes of: acquiring uplink data relating to a hand-over target base station; using the uplink data to determine the maximum transmission power of a hand-over ranging message; and transmitting a hand-over ranging message having a power level below the determined maximum transmission power to the hand-over target base station. | 05-05-2011 |
20110230187 | COOPERATIVE SCANNING-BASED CELL RESELECTION METHOD AND SYSTEM IN WIRELESS COMMUNICATION SYSTEM - A cell reselection method and system based on a cooperative scanning of the mobile relay station and mobile stations is provided for facilitating cell reselection procedure in a Broadband Wireless Access (BWA) system. The cooperative scanning method for a moving wireless network including a mobile relay station and at least one mobile station according to the present invention includes transmitting, at the moving wireless network, a scanning request with cooperative scanning duration to a serving base station; assigning, when a scanning response, neighbor base stations to the mobile relay station and at least one mobile station; scanning, at the mobile relay station and the at least mobile station, the assigned neighbor base stations; and transmitting scanning results to the serving BS station. | 09-22-2011 |
20120003962 | GROUP HANDOVER METHOD AND APPARATUS IN BROADBAND WIRELESS COMMUNICATION SYSTEM THAT SUPPORTS MOBILE RELAY STATION - Group handover method and apparatus in a broadband wireless communication system which supports a mobile relay station are provided. A method of a serving base station for group handover of the mobile relay station includes when receiving a measurement report message from a relay station, determining whether the relay station is a mobile relay station of a simple type which forwards a signal; collecting handover related information of the mobile relay station and mobile terminals belonging to the mobile relay station, from pre-stored information; requesting handover of the mobile relay station and the mobile terminals by transmitting the collected handover related information to a target base station; and receiving a message indicating whether the handover of the mobile relay station and the mobile terminals is approved, from the target base station. | 01-05-2012 |
Il-Goo Lee, Pohang-Si KR
Patent application number | Description | Published |
---|---|---|
20120237390 | Martensitic Stainless Steel Produced by a Twin Roll Strip Casting Process and Method for Manufacturing Same - Provided is a martensitic stainless steel produced by a twin roll strip casting process and a method for manufacturing the same, wherein the hot rolled steel has superior crack resistance. The martensitic stainless hot rolled steel sheet comprises, by weight %, C:0.1 to 1.5%, Cr:12 to 15%, Ni:1% or lower, Ti:0.005 to 0.1%, and the balance Fe and unavoidably added impurities, and wherein a primary chrome carbide precipitated at a grain boundary is fragmented and refined. Provided is a high hardness martensitic stainless cold rolled steel sheet manufactured by annealing and cold rolling the hot rolled steel sheet, and a method for manufacturing the same. A twin roll strip casting process is applied, and grain boundary strengthening elements are added to prevent center segregation, crack and strip breakage during casting, thereby ensuring the stability of the casting process. | 09-20-2012 |
Jae Bong Lee, Pohang-Si KR
Patent application number | Description | Published |
---|---|---|
20140167940 | METHOD OF CONVERTING AUDIO SIGNAL TO HAPTIC SIGNAL AND APPARATUS THEREOF - Disclosed are a method and an apparatus of efficiently converting audio signal to haptic signal. A method of converting audio signal into haptic signal, performed in a haptic signal converting apparatus, may include obtaining perceptive characteristic information of the audio signal from the audio signal provided; obtaining perceptive characteristic information of the haptic corresponding to the obtained perceptive characteristic information of the audio signal; and converting the perceptive characteristic information of the haptic into a haptic signal. Thus, the audio signal may be converted to the haptic signal intuitively and in real time, so that the method and the apparatus may be applied to various fields such as a mobile device, a gaming terminal, a home theater, and a 4 dimensional theater system, etc. | 06-19-2014 |
Jae-Hwa Lee, Pohang-Si KR
Patent application number | Description | Published |
---|---|---|
20120321501 | High-Carbon Martensitic Stainless Steel and Production Method Therefor - The present invention relates to a production method for high-carbon martensitic stainless steel as used in razorblades, knives and the like, which contains, as percentages by weight, 0.40 to 0.80% carbon and 11 to 16% chromium as main components. Provided is a production method for high-carbon martensitic stainless steel in a strip-casting device, wherein a stainless-steel thin sheet is cast by supplying a stainless molten steel containing, as percentages by weight, 0.40 to 0.80% carbon and from 11 to 16% chromium to a molten steel pool from a tundish via a nozzle, and the cast stainless-steel thin sheet is made into a hot-rolled annealed strip using in-line rollers to a rolling reduction of 5 to 40% immediately just after the casting so that the size of primary carbides within the microstructure of the hot-rolled annealed strip is 10 μm or less, and also provided is martensitic stainless steel produced by means of the production method. By reducing the size of the primary carbides formed in the cast structure and the hot-rolled sheet to 10 μm or less, the present invention produces high-carbon martensitic stainless steel having outstanding blade-end quality for use in cutting implements. | 12-20-2012 |
Jae-Kon Lee, Pohang-Si KR
Patent application number | Description | Published |
---|---|---|
20140360882 | HIGH SPEED HORIZONTAL ELECTROFORMING APPARATUS FOR MANUFACTURING METAL FOIL AND METHOD FOR MANUFACTURING METAL FOIL - The present invention relates to an apparatus and a method for manufacturing metal foil by electroforming. Provided is a horizontal electroforming apparatus comprising: base plate supply means for continuously supplying flexible and conductive base plates to be provided as cathode electrodes in one horizontal direction; a horizontal cell including a conductor roll which contacts a widthwise edge portion of the base plate to transfer the base plate and supply current to the base plate, anode electrodes arranged at one side of the base plate or spaced apart from each other at both respective sides of the base plate, an electrolyte supply device for supplying an electrolyte containing metal ion through a horizontal path formed by the base plates and the anode electrodes, and current supply devices arranged at one side or both sides of the base plate to supply current to the conductor roll and to the anode electrodes so as to enable electroseparation of the metal ion; and delaminating means for delaminating, from the base plate, metal foil electrodeposited at one side or both sides of the base plate. | 12-11-2014 |
Jae-Koo Lee, Pohang-Si KR
Patent application number | Description | Published |
---|---|---|
20100052539 | PORTABLE MICROWAVE PLASMA GENERATOR CAPABLE OF GENERATING PLASMA WITH LOW ELECTRIC POWER - There is provided a small-sized portable microwave plasma generator capable of generating plasma at atmospheric pressure with low electric power including a coaxial cable, an outer conductor, a connection conductor, and a connection member. The coaxial cable includes a first inner conductor and a dielectric material encircling the first inner conductor. The outer conductor encircles the coaxial cable. The connection conductor includes at least one gas inlet tube. The connection conductor electrically connects between the first inner conductor and the outer conductor at one end of the coaxial cable. The connection member includes a second inner conductor passing through the outer conductor and then connecting to the first inner conductor. | 03-04-2010 |
20100130973 | Coagulation apparatus using cold plasma - Provided is a coagulation apparatus using cold plasma. In the coagulation apparatus, the cold plasma is generated by a microwave resonator with low power consumption in the atmosphere, and the cold plasma is vented on a bleeding portion of a wound. Accordingly, it is possible to accelerate coagulation process, to reduce unfavorable side effect such as burns on the wound, and to efficiently sterilize the wound, simultaneously. In addition, it is possible to implement a small-sized portable coagulation apparatus. | 05-27-2010 |
20100207528 | PORTABLE POWER SUPPLY APPARATUS FOR GENERATING MICROWAVE-EXCITED MICROPLASMAS - Provided is a portable power supply apparatus for generating microwave plasma, capable of minimizing a power reflected from a plasma generation apparatus and improving power consumption of the plasma generation apparatus by generating the plasma by using a microwave having a specific frequency, monitoring the power reflected from the plasma generation apparatus after the generation of the plasma, detecting a changed impedance matching condition, and correcting the frequency. | 08-19-2010 |
Jae Min Lee, Pohang-Si KR
Patent application number | Description | Published |
---|---|---|
20110050631 | TOUCH SENSOR - A touch sensor includes a plurality of operation patterns arranged in a first axis direction and supplied with a voltage, a dielectric material layer formed over the plurality of operation patterns, and a plurality of sense patterns formed over the dielectric material layer and arranged in a second axis direction to cross the first axis direction. At least one of the plurality of sense patterns has a parallel structure in which the sense pattern is separated into two or more lines, and the separated sense patterns are recombined once or more. A touch screen having a low resistance value can be obtained. | 03-03-2011 |
Jae-Sung Lee, Pohang-Si KR
Patent application number | Description | Published |
---|---|---|
20110053039 | ELECTRODE CATALYST, AND MEMBRANE ELECTRODE ASSEMBLY AND FUEL CELL INCLUDING THE ELECTRODE CATALYST - An electrode catalyst for a fuel cell having comparable electrochemical activity as a platinum electrode catalyst but is much cheaper than the platinum electrode catalyst has a structure in which palladium and at least one metal catalyst selected from the group consisting of nickel, gold, iron, and silver, and combinations thereof, are supported on a tungsten carbide and carbon mesoporous composite support. A membrane electrode assembly and a fuel cell including the electrode catalyst also has comparable electrochemical activity as a platinum electrode catalyst but is also much cheaper than the platinum electrode catalyst. | 03-03-2011 |
20120028171 | ELECTRODE CATALYST AND METHOD OF PREPARING ELECTRODE CATALYST FOR FUEL CELL, AND MEMBRANE ELECTRODE ASSEMBLY AND FUEL CELL INCLUDING SAME - An electrode catalyst for a fuel cell, a membrane electrode assembly including the electrode catalyst, and a fuel cell including the electrode catalyst. The electrode catalyst has excellent electrochemical activity compared to the currently commercially available Pt/C catalyst and is much cheaper than a catalyst using platinum. The electrode catalyst includes tungsten carbide having a specific surface area of about 10 to about 30 m | 02-02-2012 |
20130202889 | METAL SUBOXIDE AND METHODS OF PREPARING SAME - A metal suboxide having a specific surface area of greater than or equal to about 1.5 m | 08-08-2013 |
Jeong Hun Lee, Pohang-Si KR
Patent application number | Description | Published |
---|---|---|
20140348696 | METHOD FOR IMPROVING MOULDABILITY OF MAGNESIUM-ALLOY SHEET MATERIAL, AND MAGNESIUM-ALLOY SHEET MATERIAL PRODUCED THEREBY - A method for increasing formability of magnesium alloy sheet and the magnesium alloy sheet prepared by the same are provided, in which the method includes the following steps: forming {10-12} twins in magnesium alloy sheet (step 1); and annealing the magnesium alloy sheet of step 1 (step 2). The present invention also provides the magnesium alloy sheet containing {10-12} twins prepared by the method. Accordingly, the room temperature formability and the warm formability are increased by forming {10-12} twins through deformation on the magnesium alloy sheet and subsequently performing annealing, because it is possible to artificially form {10-12} twins without increasing dislocations in the magnesium alloy sheet and accommodate the deformation generated during the forming via annihilation of the twins. | 11-27-2014 |
Jeong Soo Lee, Pohang-Si KR
Patent application number | Description | Published |
---|---|---|
20140034907 | NANOWIRE SENSOR HAVING NANOWIRE OF NETWORK STRUCTURE - A nanowire sensor having a nanowire in a network structure includes: source and drain electrodes formed over a substrate; a nanowire formed between the source and drain electrodes and having a network structure in which patterns of intersections are repeated; and a detection material fixed to the nanowire and selectively reacting with a target material introduced from outside. | 02-06-2014 |
Jeong Yoon Lee, Pohang-Si KR
Patent application number | Description | Published |
---|---|---|
20130242791 | METHOD AND APPARATUS FOR CONTROLLING THE TRANSMISSION POWER OF A BASE STATION IN A WIRELESS COMMUNICATION SYSTEM - The present invention relates to a method and apparatus for controlling transmission power of the base station in a wireless communication system and includes calculating signal-to-noise ratio of a target component carrier and recovering the signal-to-noise ratio to be equal to or greater than a threshold by increasing a transmission power to a predetermined level and requesting, when the signal-to-noise ratio is less than a predetermined threshold, a neighbor base station to decrease the transmission power. According to the present invention, it is possible to suppress the inter-cell interference and improve channel utilization efficiency, resulting in improvement of the throughput of the wireless communication system. | 09-19-2013 |
20130242935 | METHOD AND DEVICE FOR MANAGING RESOURCES OF BASE STATION IN WIRELESS COMMUNICATION SYSTEM - The present invention relates to a method and a device for managing resources of a base station in a wireless communication system. The method comprises: calculating an average resource use of serving resources, which are used as downlinks from a serving base station to a plurality of communication terminals; selecting one of the communication terminals, which has a maximum interference from a neighbor base station, if the calculated average resource use exceeds a preset threshold; and making a reservation for at least one of neighbor resources used as downlinks from the neighbor base station, the at least one neighbor resource corresponding to the serving resource for the selected communication terminal, so that the neighbor base station may decrease transmission power in the at least one neighbor resource. According to the present invention, since the base station makes a resource reservation so that transmission power may be reduced in at least one of the neighbor resources of the neighbor base station, the interference, by the neighbor base station, to the serving resource for one of the communication terminals connected to the base station can be suppressed Accordingly, the base station in a wireless communication system can effectively manage resources. | 09-19-2013 |
Ji-Hwang Lee, Pohang-Si KR
Patent application number | Description | Published |
---|---|---|
20110297216 | ORGANIC SOLAR CELL AND METHOD OF MANUFACTURING THE SAME - An organic solar cell includes an anode and a cathode facing each other, a photoactive layer disposed between the anode and the cathode and including an electron donor and an electron acceptor, and a transparent auxiliary layer disposed between the anode and the cathode and in contact with the photoactive layer. The transparent auxiliary layer includes inorganic nanoparticles and a polymer. | 12-08-2011 |
Jihyung Lee, Pohang-Si KR
Patent application number | Description | Published |
---|---|---|
20140340642 | PERSONAL-COMPUTER-BASED VISUAL-FILED SELF-DIAGNOSIS SYSTEM AND VISUAL-FIELD SELF-DIAGNOSIS METHOD - Provided is a personal computer-based visual field self-testing system of increasing an opportunity of a glaucoma early diagnosis through a self-testing together with improvement of a size reduction, installation, and easiness in movement of a visual field testing system by using a personal computer. | 11-20-2014 |
Jin Pyung Lee, Pohang-Si KR
Patent application number | Description | Published |
---|---|---|
20120168681 | Surface Modified Metal Nano-Particle and Use Thereof - The present invention provides a metal nanoparticle that is surface-modified with a hydrophilic or hydrophobic functional group, and a composition for optical detection comprising the same. The surface-modified nanoparticles according to the present invention form clusters suitable for optical detection, for example, suitable as an X-ray contrast agent, and have surface plasmon energy in the visible region, thereby being usefully applied to a variety of optical detection methods. | 07-05-2012 |
20130252274 | Surface Modified Metal Nano-Particle and Use Thereof - The present invention provides a metal nanoparticle that is surface-modified with a hydrophilic or hydrophobic functional group, and a composition for optical detection comprising the same. The surface-modified nanoparticles according to the present invention form clusters suitable for optical detection, for example, suitable as an X-ray contrast agent, and have surface plasmon energy in the visible region, thereby being usefully applied to a variety of optical detection methods. | 09-26-2013 |
Jong Lam Lee, Pohang-Si KR
Patent application number | Description | Published |
---|---|---|
20100006870 | LIGHT EMITTING DEVICE - The present invention relates to a light emitting device. According to the present invention, the light emitting device comprises a substrate, a plurality of light emitting cells disposed on the substrate, a first insulation layer disposed on each light emitting cell, an electrically conductive material disposed on the first insulation layer to couple two of the light emitting cells, and a second insulation layer disposed on the electrically conductive material. Each light emitting cell comprises a first semiconductor layer, a second semiconductor layer, and an inclined surface. The second insulation layer corresponds to a contour of each light emitting cell. | 01-14-2010 |
20100047943 | LIGHT EMITTING DEVICE AND METHOD OF MANUFACTURING THE SAME - The present invention relates to a light emitting device and a method of manufacturing the light emitting device. According to the present invention, the light emitting device comprises a substrate, an N-type semiconductor layer formed on the substrate, and a P-type semiconductor layer formed on the N-type semiconductor layer, wherein a side surface including the N-type or P-type semiconductor layer has a slope of 20 to 80° from a horizontal plane. Further, the present invention provides a light emitting device comprising a substrate formed with a plurality of light emitting cells each including an N-type semiconductor layer and a P-type semiconductor layer formed on the N-type semiconductor layer, and a submount substrate flip-chip bonded onto the substrate, wherein the N-type semiconductor layer of one light emitting cell and the P-type semiconductor layer of another adjacent light emitting cell are connected to each other, and a side surface including at least the P-type semiconductor layer of the light emitting cell has a slope of 20 to 80° from a horizontal plane. Further, the present invention provides a method of manufacturing the light emitting device. Accordingly, there is an advantage in that the characteristics of a light emitting device such as luminous efficiency, external quantum efficiency and extraction efficiency are enhanced and the reliability is secured such that light with high luminous intensity and brightness can be emitted. | 02-25-2010 |
20100078658 | LIGHT EMITTING DEVICE AND METHOD OF MANUFACTURING THE SAME - The present invention relates to a light emitting device and a method of manufacturing the light emitting device. According to the present invention, the light emitting device comprises a substrate, an N-type semiconductor layer formed on the substrate, and a P-type semiconductor layer formed on the N-type semiconductor layer, wherein a side surface including the N-type or P-type semiconductor layer has a slope of 20 to 80° from a horizontal plane. Further, the present invention provides a light emitting device comprising a substrate formed with a plurality of light emitting cells each including an N-type semiconductor layer and a P-type semiconductor layer formed on the N-type semiconductor layer, and a submount substrate flip-chip bonded onto the substrate, wherein the N-type semiconductor layer of one light emitting cell and the P-type semiconductor layer of another adjacent light emitting cell are connected to each other, and a side surface including at least the P-type semiconductor layer of the light emitting cell has a slope of 20 to 80° from a horizontal plane. Further, the present invention is provides a method of manufacturing the light emitting device. Accordingly, there is an advantage in that the characteristics of a light emitting device such as luminous efficiency, external quantum efficiency and extraction efficiency are enhanced and the reliability is secured such that light with high luminous intensity and brightness can be emitted. | 04-01-2010 |
20120168803 | SEMICONDUCTOR LIGHT-EMITTING DIODE AND A PRODUCTION METHOD THEREFOR - Provided is a semiconductor light-emitting diode including a semiconductor layer having a light-emitting structure; and an ohmic electrode incorporating a nanodot layer, a contact layer, a diffusion-preventing layer and a capping layer on the semiconductor layer. The nanodot layer is formed on the N-polar surface of the semiconductor layer and is formed from a substance comprising at least one of Ag, Al and Au. Also provided is a production method therefor. In the ohmic electrode which has the multi-layer structure comprising the nanodot layer/contact layer/diffusion-preventing layer/capping layer in the semiconductor light-emitting diode of this type, the nanodot layer constitutes the N-polar surface of a nitride semiconductor and improves the charge-injection characteristics such that outstanding ohmic characteristics can be obtained. | 07-05-2012 |
20120286287 | VERTICAL GALLIUM NITRIDE-BASED LIGHT EMITTING DIODE AND METHOD OF MANUFACTURING THE SAME - The present disclosure provides a vertical GaN-based semiconductor diode and a method of manufacturing the same. The GaN-based πi-V group semiconductor device includes a substrate, a p-type ohmic electrode layer on the substrate, a p-type GaN-based πi-V group compound semiconductor layer on the p-type ohmic electrode layer, an n-type GaN-based πi-V group compound semiconductor layer on the p-type GaN-based πi-V group compound semiconductor layer, and an n-type ohmic electrode layer on the n-type GaN-based IE-V group compound semiconductor layer. The p-type ohmic electrode layer is an Ag-based highly reflective electrode having a high reflectivity of 70% or more, and a surface of the n-type GaN-based E-V group compound semiconductor layer is subjected to at least one of a process of forming photonic crystals and a process of surface roughening. | 11-15-2012 |
20130105203 | FLEXIBLE ELECTRONIC DEVICE, METHOD FOR MANUFACTURING SAME, AND A FLEXIBLE SUBSTRATE | 05-02-2013 |
20130126929 | METHOD FOR MANUFACTURING NANO-IMPRINT MOULD, METHOD FOR MANUFACTURING LIGHT-EMITTING DIODE USING THE NANO IMPRINT MOULD MANUFACTURED THEREBY, AND LIGHT-EMITTING DIODE MANUFACTURED THEREBY - A method of manufacturing a light emitting diode, includes a process of forming an n-type nitride semiconductor layer, a light emitting layer, and a p-type nitride semiconductor layer on a temporary substrate, a process of forming a p-type electrode on the p-type nitride semiconductor layer, a process of forming a conductive substrate on the p-type electrode, a process of removing the temporary substrate to expose the n-type nitride semiconductor layer, a process of forming a nanoimprint resist layer on the n-type nitride semiconductor layer, a process of pressing the nanoimprint mold on the nanoimprint resist layer to transfer the nano-pattern onto the nanoimprint resist layer, and a process of separating the nanoimprint mold from the nanoimprint resist layer having the nano-pattern and etching a portion of the nanoimprint resist layer having the nano-pattern to form an n-type electrode. | 05-23-2013 |
20130161685 | METHOD FOR MANUFACTURING NANO-IMPRINT MOULD, METHOD FOR MANUFACTURING LIGHT-EMITTING DIODE USING THE NANO IMPRINT MOULD MANUFACTURED THEREBY, AND LIGHT-EMITTING DIODE MANUFACTURED THEREBY - A method of manufacturing a light emitting diode, includes a process of forming an n-type nitride semiconductor layer, a light emitting layer, and a p-type nitride semiconductor layer on a temporary substrate, a process of forming a p-type electrode on the p-type nitride semiconductor layer, a process of forming a conductive substrate on the p-type electrode, a process of removing the temporary substrate to expose the n-type nitride semiconductor layer, a process of forming a nanoimprint resist layer on the n-type nitride semiconductor layer, a process of pressing the nanoimprint mold on the nanoimprint resist layer to transfer the nano-pattern onto the nanoimprint resist layer, and a process of separating the nanoimprint mold from the nanoimprint resist layer having the nano-pattern and etching a portion of the nanoimprint resist layer having the nano-pattern to form an n-type electrode. | 06-27-2013 |
20130188324 | Method for Manufacturing a Flexible Electronic Device Using a Roll-Shaped Motherboard, Flexible Electronic Device, and Flexible Substrate - A method of manufacturing a flexible electronic device includes forming a flexible substrate on a roll-type mother substrate, separating the flexible substrate from the roll-type mother substrate, and forming an electronic device on a separation surface of the flexible substrate, which has contacted the roll-type mother substrate, thus solving the problems of low performance and low yield of flexible electronic devices due to a low processing temperature, high surface roughness, high thermal expansion coefficient, and poor handling characteristics. | 07-25-2013 |
20130207074 | LIGHT EMITTING DEVICE HAVING MGO PYRAMID STRUCTURE AND METHOD FOR FABRICATING THE SAME - A gallium nitride-based group III-V compound semiconductor light emitting device and a method for fabricating the same are provided. The gallium nitride-based group III-V compound semiconductor light emitting device includes: a substrate; a p-type ohmic electrode layer formed on the substrate; a p-type gallium nitride-based group III-V compound semiconductor layer formed on the p-type ohmic electrode layer; an n-type gallium nitride-based group III-V compound semiconductor layer formed on the p-type gallium nitride-based group III-V compound semiconductor layer; an n-type ohmic electrode layer formed on the n-type gallium nitride-based group III-V compound semiconductor layer; and first and second refractive index adjustment layers having refractive index smaller than those of the n-type gallium nitride-based group III-V compound semiconductor layer and the n-type ohmic electrode layer, wherein a pyramid structure is formed on the surface of the second refractive index adjustment layer. | 08-15-2013 |
20130221324 | SEMICONDUCTOR LIGHT EMITTING DIODE HAVING OHMIC ELECTRODE STRUCTURE AND METHOD OF MANUFACTURING THE SAME - Embodiments of the invention provide a semiconductor light emitting diode having an ohmic electrode structure, and a method of manufacturing the same. The semiconductor light emitting diode includes a light emitting structure having an upper surface constituting an N-face; and an ohmic electrode structure located on the light emitting structure. Here, the ohmic electrode structure includes a lower diffusion preventing layer, a contact layer, an upper diffusion preventing layer, and an Al protective layer from the N-face of the light emitting structure. | 08-29-2013 |
20130234173 | LIGHT EMITTING DEVICE AND METHOD OF MANUFACTURING THE SAME - The present invention relates to a light emitting device. The light emitting device comprises a substrate, an N-type semiconductor layer formed on the substrate, and a P-type semiconductor layer formed on the N-type semiconductor layer, wherein a side surface including the N-type or P-type semiconductor layer has a slope of 20 to 80° from a horizontal plane. Further, a light emitting device comprises a substrate formed with a plurality of light emitting cells each including an N-type semiconductor layer and a P-type semiconductor layer formed on the N-type semiconductor layer, wherein the N-type semiconductor layer of one light emitting cell and the P-type semiconductor layer of another adjacent light emitting cell are connected to each other, and a side surface including at least the P-type semiconductor layer of the light emitting cell has a slope of 20 to 80° from a horizontal plane. | 09-12-2013 |
20130341592 | LIGHT EMITTING DEVICE AND METHOD OF MANUFACTURING THE SAME - The present invention relates to a light emitting device. The light emitting device comprises a substrate, an N-type semiconductor layer formed on the substrate, and a P-type semiconductor layer formed on the N-type semiconductor layer, wherein a side surface including the N-type or P-type semiconductor layer has a slope of 20 to 80° from a horizontal plane. Further, a light emitting device comprises a substrate formed with a plurality of light emitting cells each including an N-type semiconductor layer and a P-type semiconductor layer formed on the N-type semiconductor layer, wherein the N-type semiconductor layer of one light emitting cell and the P-type semiconductor layer of another adjacent light emitting cell are connected to each other, and a side surface including at least the P-type semiconductor layer of the light emitting cell has a slope of 20 to 80° from a horizontal plane. | 12-26-2013 |
20140353709 | LIGHT EMITTING DIODE - Embodiments of the invention provide a gallium nitride-based light emitting diode including a transparent electrode, which includes a metal layer and a metal oxide layer. The light emitting diode includes a substrate, an n-type gallium nitride-based semiconductor layer disposed on the substrate, a p-type gallium nitride-based semiconductor layer disposed on the n-type gallium nitride-based semiconductor layer, an active layer interposed between the n-type gallium nitride-based semiconductor layer and the p-type gallium nitride-based semiconductor layer, and a transparent electrode disposed on the p-type gallium nitride-based semiconductor layer. Here, the transparent electrode has a multilayer structure including a first metal layer and a metal oxide layer sequentially stacked one above another, and impedance of the metal oxide layer matches impedance of an external environment at an interface between the metal oxide layer and the external environment. | 12-04-2014 |
Jung Woo Lee, Pohang-Si KR
Patent application number | Description | Published |
---|---|---|
20130099153 | HYBRID MATERIAL COMPRISING GRAPHENE AND IRON OXIDE, METHOD FOR MANUFACTURING THE SAME, AND APPARATUS FOR TREATING WASTE WATER USING THE SAME - A hybrid material including graphene and iron oxide, a method of manufacturing the same, and an apparatus for treating waste water using the same are provided. A hybrid material having magnetic properties and high dispersibility and including graphene and iron oxide may be effectively used for removing a heavy metal in waste water. | 04-25-2013 |
20140374646 | HYBRID MATERIAL COMPRISING GRAPHENE AND IRON OXIDE, METHOD FOR MANUFACTURING THE SAME, AND APPARATUS FOR TREATING WASTE WATER USING THE SAME - A method of manufacturing a hybrid material including graphene and iron oxide includes (a) preparing graphene oxide, (b) dispersing the graphene oxide in water to prepare a first dispersion, (c) adding divalent iron (Fe) and trivalent iron (Fe) to the first dispersion to prepare a second dispersion, (d) adjusting pH of the second dispersion to be about 8 to about 11 at about 25° C., (e) increasing the temperature of the second dispersion obtained from the (d) process up to about 80 to about 110° C., and adding a reducing agent to the second dispersion obtained from the (e) process to prepare a uniform and fine hybrid material including graphene and iron oxide. | 12-25-2014 |
Ju Seung Lee, Pohang-Si KR
Patent application number | Description | Published |
---|---|---|
20100321009 | MAGNETOSTRICTIVE TRANSDUCER AND APPARATUS AND METHOD FOR MONITORING STRUCTURAL HEALTH USING THE SAME - A magnetostrictive transducer that generates a large shear horizontal (SH) wave useful for non-destructive testing of a plate member, and method and apparatus for structural health monitoring by using the magnetostrictive transducer. The magnetostrictive transducer includes: a magnetostrictive patch array comprising a plurality of magnetostrictive patches that have different radii of curvature, and have the same center of curvature when arranged on a plate member and form an overall fan-shape; a static magnetic field forming unit comprising two magnets that are respectively installed on both sides of the magnetostrictive patch so that a magnetic field is formed in parallel to an arc direction of the magnetostrictive patch; and a dynamic magnetic field forming unit comprising a wound coil comprising a plurality of curved portions. | 12-23-2010 |
20140347041 | DEFECT INSPECTION DEVICE OF STEEL PLATE - Provided is a defect inspection device of a steel plate. The defect inspection device according to the present invention includes a plurality of inspection units arranged in a width direction of the steel plate, wherein each of the plurality of inspection units includes a first magnetized pole and a second magnetized pole corresponding to each other. Also, the inspection unit includes: a magnetizing part generating a magnetic flux for magnetizing the steel plate in a direction inclined at a predetermined angle with respect to a rolling direction through the first magnetized pole and the second magnetized pole; and a detection part detecting a leakage flux that leaks due to defects existing in or on the steel plate by using the flux generated by the magnetizing part. Thus, the defects may be correctly detected through the defect inspection device. | 11-27-2014 |
Kyeong Seok Lee, Pohang-Si KR
Patent application number | Description | Published |
---|---|---|
20090324824 | METHOD FOR GROWING THIN FILM - Disclosed is a method for growing a thin film, which includes modifying a surface grain size and surface roughness on a thin film to improve the mobility of a carrier and a light scattering effect. The method for growing a thin film includes: forming nuclei of grains having various grain orientations on a substrate; causing first grains having a first specific grain orientation to grow predominantly among the grains having various grain orientations, thereby forming a first preferred texture comprised of the predominantly grown first grains; and then causing second grains having a second grain orientation to grow predominantly, thereby forming a second preferred texture comprised of the predominantly grown second grains, wherein the surface grain size of each of the second grains forming the second texture is larger than that of each of the first grains forming the first texture. | 12-31-2009 |
Kyoung Ho Lee, Pohang-Si KR
Patent application number | Description | Published |
---|---|---|
20100074095 | TRANSMITTER CIRCUIT TO COMPENSATE FOR INFLUENCE OF CROSSTALK NOISE IN PRE-EMPHASIS SCHEME - A transmitter circuit for transmitting parallel data, suitable for compensating for influence of crosstalk noise in a pre-emphasis scheme. The transmitter circuit includes first through N | 03-25-2010 |
20100207700 | MICRO-STRIP TRANSMISSION LINE STRUCTURE OF A SERPENTINE TYPE - A micro-strip transmission line capable of reducing far-end crosstalk is provided. The micro-strip transmission line having a serpentine shape is capable of reducing the far-end crosstalk of the transmission line by increasing capacitive coupling between neighboring transmission lines by allowing parallel micro-strip transmission lines to have serpentine shapes. In the structure of the micro-strip transmission line having the serpentine shape, it is possible to reduce the far-end crosstalk of the transmission line by increasing capacitive coupling between neighboring transmission lines by allowing parallel micro-strip transmission lines to have serpentine shapes. | 08-19-2010 |
20110090028 | MICTOSTRIP TRANSMISSION LINE STRUCTURE WITH VERTICAL STUBS FOR REDUCING FAR-END CROSSTALK - Provided is a microstrip transmission line for reducing far-end crosstalk. In a conventional microstrip transmission line on a printed circuit board, a capacitive coupling between adjacent signal lines is smaller than an inductive coupling therebetween, so that far-end crosstalk occurs. According to the present invention, the capacitive coupling between the adjacent signal lines is increased to reduce the far-end crosstalk. A vertical-stub type microstrip transmission line is provided. | 04-21-2011 |
Kyung-Hoon Lee, Pohang-Si KR
Patent application number | Description | Published |
---|---|---|
20140295326 | NITROGEN-DOPED TUNGSTEN CARBIDE STRUCTURE AND METHOD OF PREPARING THE SAME - A tungsten carbide structure includes tungsten carbide having a plate shaped structure and including a plurality of mesopores, a first carbon layer surrounding a surface of tungsten carbide and containing nitrogen, and a second carbon layer surrounding the first carbon layer and containing nitrogen. | 10-02-2014 |
Min Young Lee, Pohang-Si KR
Patent application number | Description | Published |
---|---|---|
20140080897 | HYALURONIC ACID-NUCLEIC ACID CONJUGATE AND COMPOSITION FOR NUCLEIC ACID DELIVERY CONTAINING THE SAME - The present invention relates to a hyaluronic acid-nucleic acid conjugate for the development of in vivo nucleic acid delivery system, and the development of nucleic acid delivery system using the same. Specifically, a hyaluronic acid-nucleic acid complex wherein a hyaluronic acid-alkylenediamine conjugate and nucleic acid are connected by a disulfide bond; a composition for nucleic acid delivery comprising the hyaluronic acid-nucleic acid complex as an active ingredient; a method for preparing the hyaluronic acid-nucleic acid complex; and a method for in vivo delivery of nucleic acid, comprising administering the hyaluronic acid-nucleic acid complex to a subject are provided. | 03-20-2014 |
Mi-Sook Lee, Pohang-Si KR
Patent application number | Description | Published |
---|---|---|
20130039918 | Pharmaceutical Composition Using Connective-tissue Growth Factor - This disclosure relates to an angiogenesis-related pharmaceutical composition using connective tissue growth factor, more particularly to a pharmaceutical composition for promoting angiogenesis containing the connective tissue growth factor or a pharmaceutical composition for inhibiting angiogenesis containing at least one selected from the group consisting of polypeptide, antibody and a compound binding to connective tissue growth factor. The fragment of connective tissue growth factor protein, which was found out in the present invention, is a binding region to FPRL1, effectively induces FPRL1-specific ERK phosphorylation, activates FPRL1 to increase intracellular Ca | 02-14-2013 |
Mun Jik Lee, Pohang-Si KR
Patent application number | Description | Published |
---|---|---|
20130151061 | CLEANING ROBOT AND UNDERWATER SEDIMENT CLEANING APPARATUS AND METHOD - A cleaning robot capable of cleaning a water tank in an unmanned manner and an underwater sediment cleaning apparatus and method are provided. The cleaning robot includes a body put into a water tank, a driver supporting the body and moving the body, a suction part arranged in front of the body and sucking contaminated water containing sediment in the water tank, and a tilting part supported by the body to support the suction part and rotating the suction part on an axis corresponding to the direction across the moving direction of the body. | 06-13-2013 |
Myung Kyu Lee, Pohang-Si KR
Patent application number | Description | Published |
---|---|---|
20140205030 | RECEIVING DEVICE OF OFDM COMMUNICATION SYSTEM AND METHOD FOR ALLEVIATING PHASE NOISE THEREOF - The present invention relates to a receiving apparatus in an OFDM communication system and a phase noise mitigation method thereof which are configured to estimate and compensate for phase noise from a received OFDM symbol, unlike the conventional receiver which uses a pilot symbol for mitigating phase noise, and thus can improve the transmission efficiency and error rate performance in an OFDM system. | 07-24-2014 |
Sangrae Lee, Pohang-Si KR
Patent application number | Description | Published |
---|---|---|
20120154392 | IMAGE DISPLAY DEVICE - An image display device includes a display element selectively implementing a 2D image and a 3D image and a patterned retarder. The display element includes a pixel array including a plurality of subpixels, which are respectively formed at crossings of column lines and row lines. The patterned retarder includes a plurality of first retarders, each of which transmits light from the display element as a first polarization component, and a plurality of second retarders, each of which transmits the light from the display element as a second polarization component. The first retarders and the second retarders are alternatively arranged. | 06-21-2012 |
Sang Woo Lee, Pohang-Si KR
Patent application number | Description | Published |
---|---|---|
20140338796 | Stainless Steel Having Superior Surface Quality and Moldability for Fuel Cell Divider Sheet, and Method for Manufacturing Same - Provided is a ferrite-based stainless steel having superior moldability when molding a fuel cell divider sheet from a material by controlling yield point elongation in accordance with alloy components. The ferrite-based stainless steel comprises, in weight percentages: no more than 0.02% of C; no more than 0.02% of N; no more than 0.4% of Si; no more than 0.2% of Mn; no more than 0.04% of P; no more than 0.02% of S; 25.0-32.0% of Cr; 0-1.0% of Cu; no more than 0.8% of Ni; no more than 0.01-0.5% of Ti; no more than 0.01-0.5% of Nb; no more than 0.01-1.5% of V; and residual Fe and inevitable elements, wherein the content of Ti, Nb, V, C, and N in terms of weight % of steel uses Formula (1) to render a yield point elongation of the material of no more than 1.1%, and wherein a steel material has superior moldability. | 11-20-2014 |
Seok-Ho Lee, Pohang-Si KR
Patent application number | Description | Published |
---|---|---|
20080249296 | Molecular Transporters Based on Sugar and Its Analogues and Processes For the Preparation Thereof - The inventive molecular transporter compound shows significantly high permeability through a biological membrane such as a plasma membrane, nuclear membrane and blood-brain barrier, and accordingly, can be effectively used in delivering various biologically active molecules. | 10-09-2008 |
20100330608 | MOLECULAR TRANSPORTERS BASED ON SUGAR AND ITS ANALOGUES AND PROCESSES FOR THE PREPARATION THEREOF - The inventive molecular transporter compound shows significantly high permeability through a biological membrane such as a plasma membrane, nuclear membrane and blood-brain barrier, and accordingly, can be effectively used in delivering various biologically active molecules. | 12-30-2010 |
20100330671 | MOLECULAR TRANSPORTERS BASED ON SUGAR AND ITS ANALOGUES AND PROCESSES FOR THE PREPARATION THEREOF - The inventive molecular transporter compound shows significantly high permeability through a biological membrane such as a plasma membrane, nuclear membrane and blood-brain barrier, and accordingly, can be effectively used in delivering various biologically active molecules. | 12-30-2010 |
Seon Kyoo Lee, Pohang-Si KR
Patent application number | Description | Published |
---|---|---|
20110279299 | SUB-EXPONENT TIME-TO-DIGITAL CONVERTER USING PHASE-DIFFERENCE ENHANCEMENT DEVICE - A time-to-digital converter includes a phase-difference enhancement section configured to receive first and second input signals having a reference phase difference Δt, and to output first and second output signals having an enhanced phase difference; and a comparison section configured to receive the first and second output signals, to compare a phase difference between the first and second output signals with a reference delay time τ, and to output a comparison signal. The time-to-digital converter has a high resolution. That is to say, the time-to-digital converter has a resolution less than the minimum phase delay time of a delay element, which is obtainable in a corresponding semiconductor process. | 11-17-2011 |
20120176158 | TIME-DOMAIN VOLTAGE COMPARATOR FOR ANALOG-TO-DIGITAL CONVERTER - A time-domain voltage comparator for an analog-to-digital converter includes a first voltage-to-time converter configured to be connected in series with at least one time delay cell and convert an input voltage into time information; a second voltage-to-time converter configured to be connected in series with at least one time delay cell and convert an input voltage into time information; and a phase comparator configured to determine a difference between times outputted from the first voltage-to-time converter and the second voltage-to-time converter. | 07-12-2012 |
Seung Jae Lee, Pohang-Si KR
Patent application number | Description | Published |
---|---|---|
20140082757 | TRANSFORMED CAENORHABDITIS ELEGANS AND METHOD FOR SCREENING FOR SUBSTANCES REGULATING GLUCOSE METABOLISM USING SAME - The present invention relates to a method for preparing a transformed | 03-20-2014 |
Soo Hyun Lee, Pohang-Si KR
Patent application number | Description | Published |
---|---|---|
20130131485 | TETRODE FOR MEASURING BIO-SIGNALS AND METHOD OF MANUFACTURING THE SAME - A tetrode for measuring bio-signals, the tetrode including four electrodes which extend in a lengthwise direction of the tetrode and are symmertrically arranged; and an insulation layer which surrounds the four electrodes to insulate the electrodes from each others. A method of manufacturing a tetrode for measuring bio-signals, the method including forming a first insulation layer; forming first and second electrodes on the first insulation layer and forming a second insulation layer on the first and second electrodes; and forming third and fourth electrodes on the second insulation layer and forming a third insulation layer on the third and fourth electrodes. | 05-23-2013 |
Sung-Gu Lee, Pohang-Si KR
Patent application number | Description | Published |
---|---|---|
20080246779 | DRIVING APPARATUS OF DISPLAY DEVICE, DISPLAY DEVICE INCLUDING THE SAME, AND METHOD OF DRIVING DISPLAY DEVICE - The driving apparatus of a display device calculates a slope using a minimum gray, a maximum gray, a gray average of frame data in a current frame, and a gray average of frame data in a previous frame, and corrects and outputs the input frame data according to the slope, using frame data of one frame. As a result, a gray range of the input image signal can be extended, thereby improving visibility. Further, in a case of a motion picture, even when a difference of a gray range of images of adjacent frames is large, an original image is not distorted due to extension of a gray range. Also, even when noise is included in the input image signal, a gray range can be extended after removing the noise. | 10-09-2008 |
20110227593 | SEMICONDUCTOR DEVICE AND TEST APPARATUS INCLUDING THE SAME - A semiconductor device and a test apparatus including the same, the semiconductor device including a command distributor receiving a serial command that is synchronized with a first clock signal and converting the serial command into a parallel command, a command decoder receiving the parallel command and generating a pattern sequence based on the parallel command, and a signal generator receiving the pattern sequence and generating operating signals synchronized with a second clock signal, wherein a frequency of the first clock signal is less than a frequency of the second clock signal. | 09-22-2011 |
20150046642 | MEMORY COMMAND SCHEDULER AND MEMORY COMMAND SCHEDULING METHOD - A memory command scheduler is provided. The memory command scheduler includes a scheduler queue receiving first and second requests for a memory access from external devices and storing the first and second requests therein; and a controller generating a command of the second request after a preset number of clock cycles from a current clock cycle and transferring the generated command to a memory, if generation of a command of the first request is possible in the current clock cycle and generation of the command of the second request is possible after the preset number of clock cycles from the current clock cycle. | 02-12-2015 |
Sung Jin Lee, Pohang-Si KR
Patent application number | Description | Published |
---|---|---|
20120197894 | APPARATUS AND METHOD FOR PROCESSING DOCUMENTS TO EXTRACT EXPRESSIONS AND DESCRIPTIONS - Disclosed is an apparatus and method for processing documents to extract expressions and descriptions. The apparatus for processing documents includes a document collection unit, which collects documents from websites and divides each of the collected documents into a script portion and a description portion to thus generate a script document and a description document, and an expression extraction unit, which extracts expression description sentences on the basis of the description document, and extracts expressions described by the expression description sentences from the script document. According to the invention, study material, including a pair that comprises an expression to be studied and a description thereof, can be automatically constructed. | 08-02-2012 |
20120290300 | APPARATUS AND METHOD FOR FOREIGN LANGUAGE STUDY - The apparatus for foreign language study includes: a voice recognition device configured to recognize a speech entered by a user and convert the speech into a speech text; a speech intent recognition device configured to extract a user speech intent for the speech text using skill level information of the user and dialogue context information; and a feedback processing device configured to extract a different expression depending on the user speech intent and a speech situation of the user. According to the present invention, the intent of a learner's speech may be determined even though the learner's skill is low, and customized expressions for various situations may be provided to the learner. | 11-15-2012 |
Sun-Hak Lee, Pohang-Si KR
Patent application number | Description | Published |
---|---|---|
20100317723 | Nucleolin Specific Aptamer and Use thereof - Improved G-rich oligonucleotide (GRO) aptamers specific to nucleolin, a method of preparing the aptamers, and a use of the aptamers for diagnosing and/or treating a nucleolin-associated disease, are provided. | 12-16-2010 |
20140093886 | Method of diagnosing cancer using a nucleolin specific aptamer - Improved G-rich oligonucleotide (GRO) aptamers specific to nucleolin, a method of preparing the aptamers, and a use of the aptamers for diagnosing and/or treating a nucleolin-associated disease, are provided. | 04-03-2014 |
20140213636 | Method of treating hyperproliferation of cells using a nucleolin specific aptamer - Improved G-rich oligonucleotide (GRO) aptamers specific to nucleolin, a method of preparing the aptamers, and a use of the aptamers for diagnosing and/or treating a nucleolin-associated disease, are provided. | 07-31-2014 |
Tae-Hun Lee, Pohang-Si KR
Patent application number | Description | Published |
---|---|---|
20090317933 | Method of manufacturing a CMOS image sensor - In a method of manufacturing a complementary metal-oxide semiconductor (CMOS) image sensor (CIS), an epitaxial layer may be formed on a first substrate including a chip area and a scribe lane area. A first impurity layer may be formed adjacent to the first substrate by implanting first impurities into the epitaxial layer. A photodiode may be formed in the epitaxial layer on the chip area. A circuit element electrically connected to the photodiode may be formed on the epitaxial layer. A protective layer protecting the circuit element may be formed on the epitaxial layer. A second substrate may be attached onto the protective layer. The first substrate may be removed to expose the epitaxial layer. A color filter layer may be formed on the exposed epitaxial layer using the first impurity layer as an alignment key. A microlens may be formed over the color filter layer. | 12-24-2009 |
Tae Kyung Lee, Pohang-Si KR
Patent application number | Description | Published |
---|---|---|
20120128524 | STEEL WIRE ROD HAVING EXCELLENT COLD HEADING QUALITY AND HYDROGEN DELAYED FRACTURE RESISTANCE, METHOD OF MANUFACTURING THE SAME, AND MEHOD OF MANUFACTURING BOLT USING THE SAME - Provided are a high-strength, high-manganese steel wire rod having excellent cold heading quality and not requiring spheroidizing and quenching-tempering treatments during manufacturing a bolt and a method of manufacturing a bolt using the steel wire rod. The method of manufacturing a steel wire rod includes heating a steel containing 12 to 25 wt % of Mn within a temperature range of 1100° C. to 1250° C., hot rolling the heated steel within a temperature range of 700° C. to 1100° C., and cooling the hot rolled steel to a temperature of 200° C. or less and cold caliber rolling or drawing to manufacture a steel wire rod. | 05-24-2012 |
Yong-Sub Lee, Pohang-Si KR
Patent application number | Description | Published |
---|---|---|
20110175677 | DISTRIBUTED DOHERTY POWER AMPLIFIER - Provided is a distributed Doherty power amplifier exhibiting high efficiency and linearity at a wide range of bandwidths, the distributed Doherty power amplifier including a first amplifier; a second amplifier, which is connected to the first amplifier in parallel; a first shifting unit, which is interconnected between the input of the first amplifier and the input of the second amplifier and inverses the phase of the input of the second amplifier; and a second shifting unit, which is interconnected between the output of the first amplifier and the output of the second amplifier and inverses the phase of the output of the second amplifier, wherein the first amplifier and the second amplifier are Doherty power amplifiers, and each of the Doherty power amplifiers includes a carrier amplifier and a peaking amplifier, which are connected in parallel. | 07-21-2011 |
20120112833 | 3-WAY DOHERTY POWER AMPLIFIER USING DRIVING AMPLIFIER - Disclosed is a 3-way Doherty power amplifier using a driving amplifier in which driving amplifiers are connected to the front stages of a carrier amplifier and a peaking amplifier, respectively, so as to obtain a high gain and a high efficiency. To this end, the Doherty power amplifier includes: a hybrid power distributor for distributing an input signal into first and second path units; and a driving amplifier for receiving a signal outputted from the hybrid power distributor and controlling the driving of a carrier amplifier, a first peaking amplifier, and a second peaking amplifier, wherein: the carrier amplifier, the first peaking amplifier, and the second peaking amplifier are connected to a rear stage of the driving amplifier, respectively; the first path unit generates a high efficiency at a low input power; and the second path unit maintains a high efficiency and gain in a high output range. | 05-10-2012 |
You Hwan Lee, Pohang-Si KR
Patent application number | Description | Published |
---|---|---|
20120128524 | STEEL WIRE ROD HAVING EXCELLENT COLD HEADING QUALITY AND HYDROGEN DELAYED FRACTURE RESISTANCE, METHOD OF MANUFACTURING THE SAME, AND MEHOD OF MANUFACTURING BOLT USING THE SAME - Provided are a high-strength, high-manganese steel wire rod having excellent cold heading quality and not requiring spheroidizing and quenching-tempering treatments during manufacturing a bolt and a method of manufacturing a bolt using the steel wire rod. The method of manufacturing a steel wire rod includes heating a steel containing 12 to 25 wt % of Mn within a temperature range of 1100° C. to 1250° C., hot rolling the heated steel within a temperature range of 700° C. to 1100° C., and cooling the hot rolled steel to a temperature of 200° C. or less and cold caliber rolling or drawing to manufacture a steel wire rod. | 05-24-2012 |
20130174947 | High-Toughness Cold-Drawn Non-Heat-Treated Wire Rod, and Method for Manufacturing Same - Provided is a wire rod for use in mechanical structure connections, vehicle components, or the like, and more particularly, to a wire rod which has superior toughness without being subjected to a heat treatment, and the strength of which is ensured through a cold-drawing process. Tot his end, provided are a high-toughness cold-drawn non-heat-treated wire rod and a method for manufacturing the same, wherein the wire rod comprises in % by weight: 0.2 to 0.3% of carbon (C), 0.1 to 0.2% of silicon (Si), 2.5 to 4.0% of manganese (Mn), 0.035% or less (but not 0%) of phosphorus (P), 0.04% or less (but not 0%) of sulfur (S), the remainder being iron (Fe) and unavoidable impurities. | 07-11-2013 |
20130189148 | WIRE ROD AND STEEL WIRE HAVING SUPERIOR MAGNETIC CHARACTERISTICS, AND METHOD FOR MANUFACTURING SAME - A wire rod and steel wire having superior magnetic characteristics and a method for manufacturing same, wherein the wire rod and the steel wire can be used in transformers, vehicles, electric or electronic products, or the like which require low iron loss and high permeability. Provided are a wire rod and steel wire having superior magnetic characteristics and a method for manufacturing same, wherein the wire rod or the steel wire comprises, by wt %, 0.03 to 0.05% of C, 3.0 to 5.0% of Si, 0.1 to 2.0% of Mn, 0.02 to 0.08% of Al, 0.0015 to 0.0030% of N, and the remainder being Fe and unavoidable impurities. The wire rod and steel wire having directional properties may be provided by a general manufacturing process without using expensive alloying elements and without having to add a manufacturing facility. | 07-25-2013 |
20140027025 | WIRE ROD HAVING GOOD SUPERIOR SURFACE PROPERTIES, HIGH STRENGTH, AND HIGH TOUGHNESS, AND A METHOD FOR MANUFACTURING SAME - Provided is a wire rod having high strength and high toughness, which suppresses the generation of surface oxide and has superior surface properties through uniform oxide formation, and to a method for manufacturing same. For this purpose, a wire rod comprising 0.005˜ to 0.02 wt. % of Sb, having superior surface properties, high strength and high toughness, and a method for manufacturing same are provided. | 01-30-2014 |
20140150934 | WIRE ROD HAVING SUPERIOR HYDROGEN DELAYED FRACTURE RESISTANCE, METHOD FOR MANUFACTURING SAME, HIGH STRENGTH BOLT USING SAME AND METHOD FOR MANUFACTURING BOLT - The present invention relates to a wire rod used in bolts for automobile engines, for example, and more specifically to a wire rod having an improved resistance to hydrogen delayed fracture, to a manufacturing method for same, to a bolt using same and a method for manufacturing the bolt. Provided are a high strength wire rod having a superior resistance to hydrogen delayed fracture and a method for manufacturing same, a high strength bolt using the wire rod and a method for manufacturing same, wherein. | 06-05-2014 |
Yun-Yong Lee, Pohang-Si KR
Patent application number | Description | Published |
---|---|---|
20120237390 | Martensitic Stainless Steel Produced by a Twin Roll Strip Casting Process and Method for Manufacturing Same - Provided is a martensitic stainless steel produced by a twin roll strip casting process and a method for manufacturing the same, wherein the hot rolled steel has superior crack resistance. The martensitic stainless hot rolled steel sheet comprises, by weight %, C:0.1 to 1.5%, Cr:12 to 15%, Ni:1% or lower, Ti:0.005 to 0.1%, and the balance Fe and unavoidably added impurities, and wherein a primary chrome carbide precipitated at a grain boundary is fragmented and refined. Provided is a high hardness martensitic stainless cold rolled steel sheet manufactured by annealing and cold rolling the hot rolled steel sheet, and a method for manufacturing the same. A twin roll strip casting process is applied, and grain boundary strengthening elements are added to prevent center segregation, crack and strip breakage during casting, thereby ensuring the stability of the casting process. | 09-20-2012 |
20140338796 | Stainless Steel Having Superior Surface Quality and Moldability for Fuel Cell Divider Sheet, and Method for Manufacturing Same - Provided is a ferrite-based stainless steel having superior moldability when molding a fuel cell divider sheet from a material by controlling yield point elongation in accordance with alloy components. The ferrite-based stainless steel comprises, in weight percentages: no more than 0.02% of C; no more than 0.02% of N; no more than 0.4% of Si; no more than 0.2% of Mn; no more than 0.04% of P; no more than 0.02% of S; 25.0-32.0% of Cr; 0-1.0% of Cu; no more than 0.8% of Ni; no more than 0.01-0.5% of Ti; no more than 0.01-0.5% of Nb; no more than 0.01-1.5% of V; and residual Fe and inevitable elements, wherein the content of Ti, Nb, V, C, and N in terms of weight % of steel uses Formula (1) to render a yield point elongation of the material of no more than 1.1%, and wherein a steel material has superior moldability. | 11-20-2014 |