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Dong-Hyun
Dong Hyun Cho, Gimhae KR
| Patent application number | Description | Published |
|---|---|---|
| 20100051898 | QUANTUM DOT-WAVELENGTH CONVERTER, MANUFACTURING METHOD OF THE SAME AND LIGHT EMITTING DEVICE INCLUDING THE SAME - There is provided a quantum dot wavelength converter including a quantum dot, which is optically stable without any change in an emission wavelength and improved in emission capability. The quantum dot wavelength converter includes: a wavelength converting part including a quantum dot wavelength-converting excitation light and generating a wavelength-converted light and a dispersive medium dispersing the quantum dot; and a sealer sealing the wavelength converting part. | 03-04-2010 |
| 20100053930 | WAVELENGTH CONVERSION PLATE AND LIGHT EMITTING DEVICE USING THE SAME - Provided is a wavelength conversion plate having excellent luminous efficiency of a wavelength-converted light. The wavelength conversion plate includes a dielectric layer with nano pattern, a metal layer formed inside the nano pattern, and a wavelength conversion layer formed on the metal layer and having quantum dot or phosphor which wavelength-converts an excitation light to generate a wavelength-converted light. | 03-04-2010 |
| 20100084629 | QUANTUM DOT-METAL OXIDE COMPLEX, METHOD OF PREPARING THE SAME, AND LIGHT-EMITTING DEVICE COMPRISING THE SAME - Provided is a quantum dot-metal oxide complex including a quantum dot and a metal oxide forming a 3-dimensional network with the quantum dot. In the quantum dot-metal oxide complex, the quantum dot is optically stable without a change in emission wavelength band and its light-emitting performance is enhanced. | 04-08-2010 |
Dong Hyun Cho, Gyeonggi-Do KR
| Patent application number | Description | Published |
|---|---|---|
| 20090014713 | NITRIDE SEMICONDUCTOR LIGHT EMITTING DEVICE AND FABRICATION METHOD THEREOF - The present invention relates to a GaN based nitride based light emitting device improved in Electrostatic Discharge (ESD) tolerance (withstanding property) and a method for fabricating the same including a substrate and a V-shaped distortion structure made of an n-type nitride semiconductor layer, an active layer and a p-type nitride semiconductor layer on the substrate and formed with reference to the n-type nitride semiconductor layer. | 01-15-2009 |
Dong Hyun Choi, Seoul KR
| Patent application number | Description | Published |
|---|---|---|
| 20090208016 | DOMAIN DIGITAL RIGHTS MANAGEMENT SYSTEM, LICENSE SHARING METHOD FOR DOMAIN DIGITAL RIGHTS MANAGEMENT SYSTEM, AND LICENSE SERVER - Disclosed is a domain DRM system, a license sharing method for the domain DRM system, and a license server. The domain DRM system includes at least one domain including at least one user module adapted for encryption or decryption using a provided encryption key and a domain manager adapted for decryption using a provided encryption key, and a license server for creating encryption keys corresponding to the domain manager and the one user module, respectively, and providing them with the created contents, respectively, so that, when at least one user module requests contents, a contents encryption key used to encrypt the contents is encrypted by using an encryption key of the user module and an encryption key of the domain manager according to a commutative encryption scheme, and one of the domain manager and the user module is provided with a shared license obtained as a result of encryption. | 08-20-2009 |
Dong Hyun Jeon, Ulsan KR
| Patent application number | Description | Published |
|---|---|---|
| 20110120585 | MULTILAYERED TUBE AND MANUFACTURING METHOD THEREOF BASED ON HIGH PRESSURE TUBE HYDROFORMING - Disclosed is a method of manufacturing a multilayered tube, including: preparing an outer tube, an inner tube having an outer diameter of 95˜98% of an inner diameter of the outer tube, and dies with a shaping void having a diameter of 100.20˜100.30% of an outer diameter of the outer tube; mounting the outer tube on the shaping void, with the inner tube inserted into the outer tube; plastically expanding the inner tube to be brought into contact with the outer tube by injecting a fluid into the inner tube until a pressure of the fluid reaches a first forming pressure inside the inner tube; elastically expanding the outer tube to be brought into contact with the shaping void by increasing the pressure of the fluid until the pressure of the fluid reaches a second forming pressure inside the inner tube; and elastically recovering the outer tube to allow the outer tube and the inner tube to be coupled to each other by removing the fluid from the inner tube, wherein the first forming pressure is in the range of 10˜20% of yield strength of the inner tube, and the second forming pressure is in the range of 10˜20% of yield strength of the outer tube and is maintained for 2˜3 seconds. | 05-26-2011 |
Dong Hyun Jung, Daejeon KR
| Patent application number | Description | Published |
|---|---|---|
| 20110230678 | ORGANIC FRAMEWORK - Disclosed is an organic framework including: planar layers formed by successively connecting building blocks arranged in the vicinity of each other, in which each of the building blocks includes two or three C | 09-22-2011 |
Dong Hyun Ko, Gumi-Si KR
| Patent application number | Description | Published |
|---|---|---|
| 20090043866 | License acquisition scheme indication method and mobile terminal therefor - A license acquisition scheme indication method and mobile terminal implemented with the license acquisition indication method is provided for informing a user of available license acquisition scheme in a current connectivity environment. A license acquisition scheme indication method of the present invention collects access information of at least one content server issuing licenses required for playing right protected files, attempts access to the at least one content server in one of a direct license acquisition scheme and an indirect license acquisition scheme on the basis of the access information, and displays identities of the individual right protected files with available license acquisition schemes determined as a result of the access attempts. | 02-12-2009 |
Dong Hyun Lee, Geoje-Si KR
| Patent application number | Description | Published |
|---|---|---|
| 20110011329 | LNG CARRIER HAVING AN LNG LOADING AND UNLOADING SYSTEM - An LNG carrier having an LNG loading and unloading system includes a submerged turret loading (STL) system for introducing and discharging a natural gas; a liquefaction plant for liquefying the natural gas introduced through the submerged turret loading system into a cryogenic liquefied natural gas; at least one self-supporting storage tank installed in the LNG carrier for storing the liquefied natural gas, the self-supporting storage tank arranged in such a manner that the liquefied natural gas is loaded to and unloaded from the LNG carrier through the self-supporting storage tank; and at least one membrane type storage tank arranged in a neighboring relationship with the self-supporting storage tank, the membrane type storage tank kept in fluid communication with the self-supporting storage tank. The LNG carrier further includes a regasification plant for regasifying the liquefied natural gas stored in the self-supporting storage tank. | 01-20-2011 |
Dong Hyun Lee, Daejeon KR
| Patent application number | Description | Published |
|---|---|---|
| 20080307006 | FILE MUTATION METHOD AND SYSTEM USING FILE SECTION INFORMATION AND MUTATION RULES - Provided are a file mutation method and a system using file section information and mutation rules. The file mutation system includes: a file section information extraction module obtaining file section information with respect to a sample file of a known file format; a file section information production module producing file section information with respect to a sample file of an unknown format; a mutation rule production module receiving a user input that a mutation rule is applied and producing a mutation rule, the mutation rule defining a mutation function that is to be applied to each data type; and a file mutation module receiving the sample file and producing a plurality of test case files that are created by mutating the sample file through the file section information processed in the file section information extraction module and the file section information production module and the mutation rule from the mutation rule production module. | 12-11-2008 |
| 20080313417 | APPARATUS AND METHOD OF DETECTING AND CONTROLLING PRIVILEGE LEVEL VIOLATION PROCESS - Provided are an apparatus and method of detecting and controlling a privilege level violation process. The apparatus monitors whether higher-privileged processes depend on information provided from lower-privileged objects or denies the higher-privileged processes to access the lower-privileged objects. The apparatus is provided in a process, and monitors whether a process accesses to a lower-privileged object. The apparatus gives a warning message or denies an access of the process to the lower-privileged object when it detects that the higher-privileged process access to the lower-privileged object. Therefore, the apparatus of detecting and controlling a privilege level violation process detects weaknesses that may be caused by privilege level violation, thus allowing a system to be safely operated. | 12-18-2008 |
| 20090100517 | APPARATUS AND METHOD FOR MONITORING AND PROTECTING SYSTEM RESOURCES FROM WEB BROWSER - An apparatus and method for preventing an attempt to perform malicious activities using web browser weaknesses are provided. A file protection module monitors attempts to access at least one file resource when the web browser executes a program, and allows or denies access. A registry protection module monitors attempts to access at least one registry resource when the web browser executes a program, and allows or denies access. A process protection module monitors attempts to execute or terminate at least one process when the web browser executes a program, and allows or denies the execution or termination. | 04-16-2009 |
| 20100227370 | METHOD OF PRODUCING LYCOPENE USING RECOMBINANT ESHERICHIA COLI - A method of producing lycopene, with high productivity by means of a recombinant bacterial strain includes preparing the recombinant vector containing genes encoding proteins, which are required for lycopene biosynthesis. The genes involved in lycopene biosynthesis are crtE, crtB and crtI, and at least one of the said three genes (crtE, crtB and crtI) is selected from the group consisting of crtE with the nucleotide Sequence 1, crtB with the nucleotide Sequence 3 and crtI with the nucleotide Sequence 5, of the Sequence List. The said recombinant vector is transformed into | 09-09-2010 |
| 20110124090 | GENE INVOLVED IN THE BIOSYNTHESES OF LYCOPENE, RECOMBINANT VECTOR COMPRISING THE GENE, AND TRANSFORMED MICROORGANISM WITH THE RECOMBINANT VECTOR - There are provided genes involved in the biosynthesis of lycopene and having DNA sequences set forth in SEQ ID NO: 1, SEQ ID NO: 3 and SEQ ID NO: 5 encoding proteins required for the biosynthesis of lycopene, a recombinant vector comprising at least one of the genes, and a mi | 05-26-2011 |
| 20110219454 | METHODS OF IDENTIFYING ACTIVEX CONTROL DISTRIBUTION SITE, DETECTING SECURITY VULNERABILITY IN ACTIVEX CONTROL AND IMMUNIZING THE SAME - Provided is a method of identifying an ActiveX control distribution site, detecting a security vulnerability in an ActiveX control and immunizing the same. A security vulnerability existing in an ActiveX control may be automatically detected, effects brought on by the corresponding security vulnerability may be measured, and abuse of the detected security vulnerability in a user PC to be protected may be immediately prevented. Therefore, since the user PC may be protected regardless of a security patch, it is anticipated that security problems in the Internet environment caused by imprudent use of the ActiveX control may be significantly enhanced. | 09-08-2011 |
Dong Hyun Lee, Yongin-Si KR
| Patent application number | Description | Published |
|---|---|---|
| 20090080374 | METHOD OF CREATING AND DELETING SERVICE FLOW FOR ROBUST HEADER COMPRESSION, AND WIRELESS COMMUNICATION SYSTEM SUPPORTING THE SAME - A method of creating a service flow for ROHC in a control station is disclosed, which can establishes a ROHC channel between ROHC entities, the method comprising obtaining a first ROHC parameter from a ROHC entity of the control station, upon receiving a subscriber profile to which ROHC is applied; and transmitting a first message including the first ROHC parameter for requesting the creation of service flow to a mobile station related with the subscriber profile and a base station performing a dynamic service addition (DSA) procedure through the use of a second message including the first ROHC parameter. | 03-26-2009 |
| 20090080422 | HEADER-COMPRESSION PACKET PROCESSING METHOD, MOBILE STATION, BASE STATION, AND CONTROL STATION IN WIRELESS COMMUNICATION SYSTEM - A header-compression packet processing method in a wireless communication system is disclosed, which can transmit a header-compression packet through a packet transmission path mapped to a service flow, the method comprising, when a service flow of a downlink packet is mapped to a header-compression transmission channel, obtaining a second packet by adding a header-compression context ID mapped to an IP flow of the downlink packet to a first packet made by compressing a header of the downlink packet, in a control station; adding a data path tag mapped to the service flow of the downlink packet to the second packet; and transmitting the second packet with the data path tag to a base station maintaining mapping information of a connection ID for a corresponding mobile station and the data path tag, so as to transmit the second packet with the data path tag to the corresponding mobile station using the header-compression transmission channel. | 03-26-2009 |
Dong Hyun Moon, Ulju-Gun KR
| Patent application number | Description | Published |
|---|---|---|
| 20090114096 | SEPARATION, PURIFICATION AND RECOVERY METHOD OF SF6, HFCs AND PFCs - A separation, purification and recovery method of SF | 05-07-2009 |
Dong Hyun Oh, Pohang-Shi KR
| Patent application number | Description | Published |
|---|---|---|
| 20080260676 | HYDROXYCUCURBITURIL DERIVATIVES, THEIR PREPARATION METHODS AND USES - Provided are hydroxycucurbituril derivatives, their preparation methods and uses. The hydroxycucurbituril derivative is easy to further functionalize with enhanced solubility in common solvents, thereby providing wider applications. | 10-23-2008 |
Dong Hyun Oh, Pohang-City KR
| Patent application number | Description | Published |
|---|---|---|
| 20080279950 | NANO-PARTICLES COMPRISING CUCURBITURIL DERIVATIVES, PHARMACEUTICAL COMPOSITION CONTAINING THE SAME, AND PROCESS FOR THE PREPARATION THEREOF - Provided are nanoparticles prepared by the aggregation of cucurbituril derivatives and having a particle size of 1 to 1,000 nm, a pharmaceutical composition in which a pharmaceutically active substance is loaded into the nanoparticles, and preparation methods thereof. | 11-13-2008 |
Dong Hyun Oh, Daejeon KR
| Patent application number | Description | Published |
|---|---|---|
| 20100069520 | Block copolymer of polyimide and polyamic acid, method for producing the block copolymer, photosensitive resin composition comprising the block copolymer and protective film formed using the block copolymer - A block copolymer of a polyimide and a polyamic acid is disclosed. Further disclosed are a method for producing the block copolymer and a positive type photosensitive composition comprising the block copolymer. The solubility of the photosensitive composition in an alkaline aqueous solution is controlled to achieve high resolution of a pattern. Further disclosed are a protective film of a semiconductor device and an ITO insulating film of an organic light emitting diode (OLED), which are formed using the block copolymer. The protective film and the ITO insulating film are very stable over time. | 03-18-2010 |
| 20100233618 | POLYIMIDE-BASED POLYMERS, COPOLYMERS THEREOF AND POSITIVE TYPE PHOTORESIST COMPOSITIONS COMPRISING THE SAME - Polyimide-based polymers and copolymers thereof are provided. Further provided is a positive type photoresist composition comprising at least one of the polyimide-based polymers and copolymers thereof as a binder resin. The photoresist composition exhibits high resolution, high sensitivity, excellent film characteristics and improved mechanical properties, which are required for the formation of semiconductor buffer coatings. | 09-16-2010 |
| 20110123927 | PHOTOSENSITIVE RESIN COMPOSITION CONTAINING POLYIMIDE RESIN AND NOVOLAK RESIN - A photosensitive resin composition is provided. The photosensitive resin composition comprises a) an alkali-soluble polyimide resin, b) an alkali-soluble novolak resin, c) a photosensitizer, and d) an organic solvent. The photosensitive resin composition is resistant to heat and can be used to form a pattern whose lateral angles are easily controllable. A large difference in developability between exposed and unexposed portions of the photosensitive resin composition is caused when patterning. The photosensitive resin composition is advantageous in terms of sensitivity, resolution, heat resistance and adhesiveness. Particularly, the lateral angles of the pattern can be easily controlled by varying the contents of the alkali-soluble resins. Therefore, the photosensitive resin composition is useful in the formation of an insulating film pattern of an organic light emitting diode (OLED). | 05-26-2011 |
Dong Hyun Seo, Ulsan KR
| Patent application number | Description | Published |
|---|---|---|
| 20090253090 | System for controlling atmosphere gas inside furnace - A system for controlling atmospheric gas inside a furnace may include a furnace into which an atmospheric gas is charged for thermaltreating carbon steel, a flow control portion that is connected to the furnace for controlling the flow of the atmospheric gas, a gas generator for producing an endothermic gas (Rx gas) and supplying the flow control portion with the endothermic gas, and a gas analyzing control portion for analyzing the atmospheric gas that is supplied through a sampling line that is connected to the furnace and for controlling the flow control portion based on the analyzed data so as to control a flux of the atmospheric gas that is supplied to the furnace. With the system, decarbonization of carbon steel can be prevented or reduced. | 10-08-2009 |
Dong Hyun Shin, Seoul KR
Dong Hyun Song, Hwasung-Si KR
| Patent application number | Description | Published |
|---|---|---|
| 20100268871 | NON-VOLATILE MEMORY CONTROLLER PROCESSING NEW REQUEST BEFORE COMPLETING CURRENT OPERATION, SYSTEM INCLUDING SAME, AND METHOD - A non-volatile memory controller, system and method capable of processing a next request as an interrupt before completing a current operation are disclosed. The non-volatile memory system includes a first memory storing meta data loaded from a flash memory; a second memory storing the meta data copied from the first memory; and a flash memory controller copying the meta data from the first memory to the second memory, changing the meta data in the second memory, and then re-copying the changed meta data from the second memory to the first memory during a first-type operation that requires changes in the meta data. | 10-21-2010 |
Dong-Hyun Bae, Seoul KR
| Patent application number | Description | Published |
|---|---|---|
| 20080219084 | Fabrication Methods of Metal/Polymer/Ceramic Matrix Composites Containing Randomly Distributed or Directionally Aligned Nanofibers - Disclosed herein is a method for manufacturing a composite having nanofibers uniformly dispersed in a metal, polymer or ceramic matrix. The method comprises mixing the nanofibers with a metallic, polymeric or ceramic material, followed by uniformly dispersing the nanofibers in the material via deformation of the metal, polymer or ceramic matrix by application of mechanical energy to the material; and imparting a directionality to the nanofibers via application of a mechanical mass flowing process to a composite material with the nanofibers uniformly dispersed in the metal, polymer or ceramic matrix. With the method, since the nanofibers can be uniformly dispersed in the metal, polymer or ceramic matrix via a simple mechanical process, the composite can be manufactured through a simple process, thereby enhancing manufacturing efficiency. | 09-11-2008 |
Dong-Hyun Cho, Gimhae-Si KR
| Patent application number | Description | Published |
|---|---|---|
| 20110114181 | ECO-FRIENDLY METHOD OF MANUFACTURING QUANTUM DOTS BY USING NATURAL OIL - The present invention relates to a method for manufacturing quantum dots including mixing a Group II metal precursor and a natural oil and increasing temperature thereof and adding a Group VI chalcogenide precursor to the mixed solution and increasing temperature thereof. According to the present invention, use of a natural oil, instead of any artificially synthesized surfactant, allows mass production of eco-friendly quantum dots. | 05-19-2011 |
Dong-Hyun Choi, Gyeonggi-Do KR
| Patent application number | Description | Published |
|---|---|---|
| 20100183150 | Shared key management method, shared key generating method and message communication method for scada system, and recording medium - A shared key management method for a Supervisory Control And Data Acquisition (SCADA) system in which a master terminal unit (MTU), a plurality of sub master terminal units (SUB-MTUs), and a plurality of remote terminal units (RTUs) are configured in a sequential hierarchy, is provided. The method includes: (a) at the MTU, generating a plurality of secret keys and respectively allocating the secret keys to the RTUs; (b) at the MTU, generating a group key in a tree structure, wherein a leaf node of the tree structure corresponds to each RTU, a parent node of a node corresponding to an RTU corresponds to a SUB-RTU to which the RTU is connected, a shared key of each node of the group key is generated by hashing shared keys of all child nodes, and a shared key of a leaf node of the group key is set as a secret key of the RTU; (c) at the RTU or the SUM-MTU, receiving and storing shared keys of every node from a node corresponding to itself to a root node; (d) when the RTU or the SUM-MTU is added or deleted, at the MTU, generating shared keys of nodes along a path from a node corresponding to the added or deleted terminal unit to the root node again; and (e) at the RTU or the SUB-MTU, receiving and storing the generated shared keys. According to the key management method for the SCADA system described above, in the case of encrypting and broadcasting or multicasting a message, a computation amount can be reduced. | 07-22-2010 |
Dong-Hyun Jang, Suwon-Si KR
| Patent application number | Description | Published |
|---|---|---|
| 20100327422 | SEMICONDUCTOR CHIP, METHOD OF FABRICATING THE SAME, AND STACK MODULE AND MEMORY CARD INCLUDING THE SAME - A semiconductor chip, a method of fabricating the same, and a stack module and a memory card including the semiconductor chip include a first surface and a second surface facing the first surface is provided. At least one via hole including a first portion extending in a direction from the first surface of the substrate to the second surface of the substrate and a second portion that is connected to the first portion and has a tapered shape. At least one via electrode filling the at least one via hole is provided. | 12-30-2010 |
Dong-Hyun Jang, Suwon-City KR
| Patent application number | Description | Published |
|---|---|---|
| 20090261474 | WAFER LEVEL PACKAGE HAVING A STRESS RELIEF SPACER AND MANUFACTURING METHOD THEREOF - In a semiconductor device package having a stress relief spacer, and a manufacturing method thereof, metal interconnect fingers extend from the body of a chip provide for chip interconnection. The metal fingers are isolated from the body of the chip by a stress-relief spacer. In one example, such isolation takes the form of an air gap. In another example, such isolation takes the form of an elastomer material. In either case, mismatch in coefficient of thermal expansion between the metal interconnect fingers and the body of the chip is avoided, alleviating the problems associated with cracking and delamination, and leading to improved device yield and device reliability. | 10-22-2009 |
| 20110031621 | WAFER LEVEL PACKAGE HAVING A STRESS RELIEF SPACER AND MANUFACTURING METHOD THEREOF - In a semiconductor device package having a stress relief spacer, and a manufacturing method thereof, metal interconnect fingers extend from the body of a chip provide for chip interconnection. The metal fingers are isolated from the body of the chip by a stress-relief spacer. In one example, such isolation takes the form of an air gap. In another example, such isolation takes the form of an elastomer material. In either case, mismatch in coefficient of thermal expansion between the metal interconnect fingers and the body of the chip is avoided, alleviating the problems associated with cracking and delamination, and leading to improved device yield and device reliability. | 02-10-2011 |
Dong-Hyun Jung, Gyeonggi-Do KR
| Patent application number | Description | Published |
|---|---|---|
| 20100121791 | SYSTEM, METHOD AND PROGRAM FOR PHARMACOKINETIC PARAMETER PREDICTION OF PEPTIDE SEQUENCE BY MATHEMATICAL MODEL - The present invention relates to the system, method and program for the pharmacokinetic parameter prediction of peptide sequence by the mathematical model. | 05-13-2010 |
Dong-Hyun Jung, Suwon-Si KR
| Patent application number | Description | Published |
|---|---|---|
| 20100174047 | Coordination Polymer Crystal With Porous Metal-Organic Frameworks and Preparation Method Thereof - Disclosed is a coordination polymer crystal with porous metal-organic frameworks (MOFs), in which, while a crystal state of the coordination polymer crystal is maintained, an additional material selected from the group consisting of an organic compound, a metal cluster, and an organometallic compound is chemically bonded to the coordination polymer crystal. Therefore it is possible easily adsorb and store more guest molecules regardless of a change in an ambient temperature or pressure due to the chemically bonded additional material. | 07-08-2010 |
Dong-Hyun Lim, Gyeonggi-Do KR
| Patent application number | Description | Published |
|---|---|---|
| 20100295827 | DISPLAY DEVICE AND METHOD OF ADJUSTING VIEWING ANGLE THEREOF - A display device for selectively adjusting a viewing angle thereof and a method of adjusting a viewing angle thereof are provided. The display device comprises: a display unit displaying an input image based on a determined viewing angle; and a controlling unit determining a viewing angle of the display unit according to a predetermined viewing condition and controlling to display the input image with the determined viewing angle, wherein the viewing condition is one of a viewer position condition, an image type condition, and a viewer setting condition. | 11-25-2010 |
Dong-Hyun Park, Seoul KR
| Patent application number | Description | Published |
|---|---|---|
| 20090027752 | PROJECTION DISPLAY APPARATUS FOR REMOVING NOISE - A projection type of display apparatus for removing a noise is disclosed. In accordance with an embodiment of the present invention, the projection type of display apparatus includes: a light source; an optical board, incidenting a beam of light emitted from the light source; and an optical modulator, being fixed on one surface of the optical board and modulating and emitting the beam of light that passed through the optical board. The blocking layer is formed on the optical board. With the present invention, it is possible to remove the noise of the image and display the image more clearly by enhancing the contrast. | 01-29-2009 |
Dong-Hyun Woo, Daejeon Metropolitan City KR
| Patent application number | Description | Published |
|---|---|---|
| 20100224478 | METHOD FOR COLLECTING (METH)ACRYLIC ACID AND APPARATUS FOR COLLECTING (METH)ACRYLIC ACID - The present invention provides a (meth)acrylic acid collecting method for collecting a (meth)acrylic acid from a mixed gas that includes an organic byproduct, a steam, and a (meth)acrylic acid that are generated in a production reaction of the (meth)acrylic acid, which includes the steps of a) contacting the mixed gas that includes the organic byproduct, the steam, and the (meth)acrylic acid with a (meth)acrylic acid absorption solvent to obtain a gas that includes the organic byproduct and the steam and the (meth)acrylic acid containing solution while the gas and the (meth)acrylic acid containing solution are separated from each other; b) contacting the gas that includes the organic byproduct and the steam that are obtained in the step a with the organic byproduct absorption solvent to obtain the gas that includes the steam and the organic byproduct containing solution while the gas and the organic byproduct containing solution are separated from each other; c) supplying the gas that includes the steam that is obtained in the step b into the production reaction of the (meth)acrylic acid; and d) obtaining the (meth)acrylic acid from the (meth)acrylic acid containing solution that is obtained in the step a while the (meth)acrylic acid and the (meth)acrylic acid containing solution are separated from each other, and a (meth)acrylic acid collecting device. | 09-09-2010 |
| 20110060158 | Preparation Method for (Meth)acrylate - The present invention provides a method for preparing (meth)acrylate by esterification reaction of reactants containing (meth)acrylic acid and alcohol in the presence of a catalyst, the preparation method for (meth)acrylate is characterized in that a hydrazine compound or derivative thereof is put into an esterification reactor; and (meth)acrylate prepared by the same. The present invention effectively prevents impurities generated by aldehyde that is contained in the raw material (meth)acrylic acid from remaining in a production apparatus and the catalyst, so that the process for producing (meth)acrylate proceeds smoothly. | 03-10-2011 |
| 20110230675 | METHOD OF RECOVERING (METH) ACRYLIC ACID ESTER - The present invention provides a method of recovering a (meth)acrylic acid ester, which comprises the steps of: (a) carrying out an esterification reaction between an alcohol and (meth)acrylic acid in the presence of a catalyst to obtain a (meth)acrylic acid ester, wherein a byproduct is generated together with the (meth)acrylic acid ester; and (b) subjecting the byproduct generated in step (a) to a reaction with a catalyst and water in a reactor, wherein the water is fed into the reactor in order that water content exceeds 0 wt % but is 10 wt % or less in the reactor based on the total weight of reactants comprising the byproduct, the catalyst and the water, and thereby separating the (meth)acrylic acid, the alcohol and the (meth)acrylic acid ester contained in the byproduct from the byproduct to obtain the (meth)acrylic acid, the alcohol and the (meth)acrylic acid ester as a recovered product. | 09-22-2011 |
Dong-Hyun Woo, Daejeon Metropolitan KR
| Patent application number | Description | Published |
|---|---|---|
| 20100036157 | METHOD FOR PREPARING UNSATURATED ALDEHYDE AND/OR UNSATURATED FATTY ACID USING FIXED-BED CATALYTIC PARTIAL OXIDATION REACTOR - The present invention provides a method for preparing unsaturated aldehydes and/or unsaturated fatty acids from olefins using a fixed-bed catalytic partial oxidation reactor, in particular, a start-up method upon packing with catalysts and initiating the reaction, and a process for producing unsaturated aldehydes and/or unsaturated fatty acids with high yield. | 02-11-2010 |
Dong-Hyun Yoo, Seoul KR
| Patent application number | Description | Published |
|---|---|---|
| 20110095293 | THIN FILM TRANSISTOR ARRAY PANEL - A thin film transistor array panel includes: a substrate, a gate line disposed on the substrate, a data line intersecting the gate line, a drain electrode separated from the data line a first insulating layer covering the data line, a color filter disposed on the first insulating layer, a second insulating layer disposed on the color filter and having a contact hole exposing the drain electrode and the color filter and a pixel electrode disposed on the second insulating layer and connected to the drain electrode through the contact hole. The contact hole partially exposes the color filter near a portion where the drain electrode and the pixel electrode are connected to each other, and the pixel electrode covers the color filter exposed through the contact hole. | 04-28-2011 |