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Hyun Chul Lee

Hyun Chul Lee, Hwaseong-Di KR

Patent application numberDescriptionPublished
20090269631Fuel cell system and control method thereof - Disclosed is a method of controlling a fuel cell system including a fuel processor to generate reforming gas and a stack to generate energy by receiving the reforming gas from the fuel processor. The method includes performing an initial operation, in which the fuel processor is operated to generate thermal energy heating, a heat medium is heated by the thermal energy generated from the fuel processor, and raising a temperature of the stack to a normal operation temperature by the heat medium having a high temperature, and performing a normal operation, in which the reforming gas is supplied to the stack after the temperature of the stack has reached the normal operation temperature. The stack temperature is raised until the stack is normally operated by heating the stack through the circulation of a heat medium heated by heat generated from a fuel processor.10-29-2009

Hyun Chul Lee, Hwasung-Si KR

Patent application numberDescriptionPublished
20090186246Fuel cell and control method thereof - Disclosed herein are a fuel cell and a method for controlling the fuel cell. The fuel cell includes a reforming apparatus to perform reformation reactions and thereby to produce a fuel gas and a heat by-product, a stack to receive the fuel gas from the reforming apparatus and thereby to generate energy, a preheating unit to heat the stack and thereby to promote the operation of the stack, and an operation control unit to supply at least one of the fuel gas and heat by-product to the preheating unit during an initial operation of the reforming apparatus, and to supply the fuel gas to the stack upon the completion of the initial operation of the reforming apparatus. According to the fuel cell, it is possible to rapidly elevate an internal temperature of the fuel cell in an economical manner until the fuel cell initially operation and then enables normal operation.07-23-2009

Hyun Chul Lee, Ulsan-Si KR

Patent application numberDescriptionPublished
20090122464Surface modified nickel nanoparticle, and conductive paste and multi-layer capacitor comprising the same - A method for surface treatment of nickel nanoparticles using an organic solution, including dispersing nickel nanoparticles in a reductive organic solvent to obtain homogeneity; heating the dispersion of nickel nanoparticles; and separating the solution after treatment, washing and drying. Nickel nanoparticles treated by this method are preferably substantially free of impurities remaining on particle surfaces and thus have smooth surfaces and increased tap density, and the use thereof enables efficient production of a multi-layer ceramic capacitor.05-14-2009

Patent applications by Hyun Chul Lee, Ulsan-Si KR

Hyun Chul Lee, Busan KR

Patent application numberDescriptionPublished
20080231440ELECTRONIC SEAL DEVICE AND METHOD OF SENSING OPENING USING THE SAME - Methods and apparatus are disclosed for sensing opening of an electronic seal device. According to one embodiment, the electronic seal device includes a T-shaped bolt unit including a protrusion formed to protrude from a first side thereof at a predetermined thickness to provide directionality, the bolt unit transmitting unique data as a Radio Frequency (RF) signal; and an electronic circuit unit including a groove formed in the wall of a hole to provide directionality so that part of the shank of the bolt unit is inserted into and engaged with the hole to a predetermined depth, and a drainage hole is formed in a lower portion of the electronic circuit unit, the electronic circuit unit transmitting/receiving RF signals to/from the bolt unit.09-25-2008

Hyun Chul Lee, Thornhill CA

Patent application numberDescriptionPublished
20110093258SYSTEM AND METHOD FOR TEXT CLEANING - A method and system for cleaning an electronic document are provided. The method comprises: identifying at least one sentence in the electronic document; numerically representing features of the sentence to obtain a numeric feature representation associated with the sentence; inputting the numeric feature representation into a machine learning classifier, the machine learning classifier being configured to determine, based on each numeric feature representation, whether the sentence associated with that numeric feature representation is a bad sentence; and removing sentences determined to be bad sentences from the electronic document to create a cleaned document.04-21-2011
20110093414SYSTEM AND METHOD FOR PHRASE IDENTIFICATION - A phrase identification system and method are provided. The method comprises: identifying one or more phrase candidates in the electronic document; selecting one of the phrase candidates; numerically representing features of the selected phrase candidates to obtain a numeric feature representation associated with that phrase candidate; and inputting the numeric feature representation into a machine learning classifier, the machine learning classifier being configured to determine, based on each numeric feature representation, whether the phrase candidate associated with that numeric feature representation is a phrase.04-21-2011

Hyun Chul Lee, Geoje-Si KR

Patent application numberDescriptionPublished
20100232383METHOD AND APPARATUS FOR ALLOCATING CHANNEL BANDWIDTH IN WIRELESS INTERNET PROTOCOL TELEVISION SYSTEMS - A method and apparatus for allocating channel bandwidths in a wireless IPTV system is provided. The method includes measuring, if an additional service offering request is received in a saturation channel state, remaining execution times until a service of each terminal that is currently receiving a service is terminated, and setting a minimum of the measured remaining execution times to a unit time; calculating a securable channel bandwidth per the unit time with respect to each terminal that is currently receiving a service; and allocating, if the summation of the securable channel bandwidths per the unit time is equal to or greater than a channel bandwidth required to provide the additional service, the requested channel bandwidth in order to provide the additional service.09-16-2010

Hyun Chul Lee, Seoul KR

Patent application numberDescriptionPublished
20080266233Liquid crystal panel and liquid crystal display device including the same - A liquid crystal panel includes a first type pixel and a second type pixel that are formed adjacent to each-other. The first type pixel has a first layout of respective first and second sub-pixels, and the second type pixel has a second layout of respective first and second sub-pixels. The first layout is different from the second layout such that the liquid crystal panel is driven according to dot inversion with alternating first and second sub-pixels determining the image displayed on the liquid crystal panel for preventing vertical faults.10-30-2008
20100174097METHOD FOR ISOLATION OF HIGH CONCENTRATION OF MAGNESIUM LITHOSPERMATE B FROM SALVIAE MILTIORRHIZAE - Disclosed herein are simple and economical methods for the isolation of a high concentration of magnesium lithospermate B from Salviae miltiorrhizae Radix and the production of a Salviae miltiorrhizae extract containing a high concentration of magnesium lithospermate B. Without using expensive separation materials (Sephadex LH-20, MCI gel CHP 20P, silica gel), the methods can isolate magnesium lithospermate B at a yield twice as high as in conventional methods and can be used to purify a Salviae miltiorrhizae extract containing 16 times as much magnesium lithospermate as conventional methods.07-08-2010

Patent applications by Hyun Chul Lee, Seoul KR

Hyun-Chul Lee, Osan-Si KR

Patent application numberDescriptionPublished
20110243013METHOD AND APPARATUS FOR CHANNEL SCANNING IN A WIRELESS COMMUNICATION SYSTEM - A method and apparatus perform channel scanning in a wireless communication system. A signal intensity of an Access Point (AP) is compared with a scanning threshold, when the AP signal intensity not less than the scanning threshold, a channel scanning schedule list is generated in consideration of a scan time based on a passive channel scan scheme and a scan time based on an active channel scan scheme. The channel scanning is performed every channel scanning time, according to the channel scanning schedule list.10-06-2011

Hyun-Chul Lee, Yongin-City KR

Patent application numberDescriptionPublished
20100243623METHOD OF CUTTING SUBSTRATE - A substrate cutting method includes the steps of aligning a panel including two or more substrates, along a cutting line, forming groove lines in the respective substrates of the panel along the cutting line, by oscillating respective ultraviolet UV laser beams along the cutting line, and cutting the panel along the groove lines, by applying force to the panel.09-30-2010
20100243627SUBSTRATE CUTTING APPARATUS AND METHOD OF CUTTING SUBSTRATE USING THE SAME - A substrate cutting apparatus includes a stage configured to support a substrate to be cut along a virtual cutting line, a laser generator configured to emit an ultraviolet (UV)-based laser beam for cutting the substrate by removing part of the substrate along the cutting line, and a beam oscillator disposed on a beam path of the laser beam and configured to perform a beam swing on the laser beam in a direction parallel to the length direction of the cutting line by oscillating a tilt angle of the laser beam toward the cutting line.09-30-2010
20100243628SUBSTRATE CUTTING APPARATUS AND METHOD OF CUTTING SUBSTRATE USING THE SAME - A substrate cutting apparatus including: a stage to support a substrate; a laser generator to emit a laser beam; a beam oscillator to oscillate the laser beam onto a cutting line of the substrate, to heat the substrate; and a cooling unit to cool the heated substrate.09-30-2010
20100282724Laser irradiation apparatus and method of manufacturing display device using the same - A laser irradiation apparatus for bonding a first substrate and a second substrate of a display device by melting a plurality of bonding members disposed between the first and second substrates to define cells when the display device is manufactured, the display device including light emitting elements disposed on a surface of the first substrate such that the bonding members respectively encompass lateral regions of the light emitting elements, the laser irradiation apparatus including a stage on which the first substrate is mounted, a laser oscillation member configured to irradiate a laser beam that melts the bonding members disposed between the first substrate and the second substrate, and a scanner configured to irradiate the laser beam incident from the laser oscillation member onto the bonding members, the scanner being configured to sequentially irradiate the laser beam on portions of the bonding members.11-11-2010
20110049764Substrate cutting apparatus and method for cutting substrate using the same - A substrate cutting apparatus includes a stage configured to support a substrate, a first laser generator configured to emit a first laser beam toward the substrate, the first laser beam being a short-pulse laser beam, and a beam swing unit disposed on a beam path of the first laser beam, the beam swing unit being configured to swing the first laser beam in a predetermined light irradiating section on the substrate, the light irradiating section on the substrate including at least one of a curved line section and a straight line section.03-03-2011
20110129779LASER INDUCED THERMAL IMAGING METHOD, METHOD OF PATTERNING ORGANIC LAYER USING THE SAME AND METHOD OF FABRICATING ORGANIC LIGHT EMITTING DIODE DISPLAY DEVICE USING THE SAME - A laser induced thermal imaging (LITI) method, a method of patterning an organic layer using the same and a method of manufacturing an organic light emitting diode (OLED) display device using the same. The LITI method includes preparing a substrate including a transfer layer, preparing a donor substrate including a base film and a light-to-heat conversion layer disposed on the base film, aligning the substrate with the donor substrate, and irradiating laser to the base layer of the donor substrate. Here, the laser is irradiated to the base layer in a region excluding a region corresponding to a pattern to be formed on the substrate. Thus, according to the method, regardless of the size of the pattern to be formed and the size of the laser beam, stitching mura can be prevented.06-02-2011
20110155705Laser cutting method and method of manufacturing organic light-emitting device - A laser cutting method includes providing a multi-layered substrate, such that the multi-layered substrate includes a circuit pattern between stacked first and second substrates, and removing a part of the second substrate by irradiating a laser beam on the second substrate, the laser beam being irradiated at an oblique angle with respect to an upper surface of the second substrate.06-30-2011
20110159201METHOD OF FORMING PATTERN AND METHOD OF MANUFACTURING ORGANIC LIGHT EMITTING DEVICE - A method of forming a pattern includes: providing a heating substrate that selectively controls positions where heat is generated by controlling locations where electric current flows; forming a pattern forming material on a surface of the heating substrate; aligning a patterning substrate, on which a pattern may be formed, to face a surface of the heating substrate; and selectively applying electric current to the heating substrate to transfer some of the pattern forming material onto the patterning substrate. According to the method of forming the pattern and a method of fabricating an OLED, the pattern is transferred by heating the pattern forming material formed on the heating substrate, and thus, the pattern may be formed with high accuracy without using a mask, and the pattern forming material remaining on the heating substrate may be re-used.06-30-2011
20110163662Organic light-emitting display device and method of manufacturing the same - An organic light-emitting display device includes a first substrate including an organic light-emitting diode and a plurality of electrodes connected to the organic light-emitting diode, the plurality of electrodes extending on the first substrate along a first direction toward an edge of the first substrate, a second substrate connected to the first substrate, the second substrate being shorter than the first substrate and exposing a portion of the plurality of electrodes on the first substrate, a sealing material disposed between the first substrate and the second substrate to surround the organic light-emitting diode, and an electrode protecting layer partially covering the exposed portion of the plurality of electrodes on the first substrate, a first side of the electrode protecting layer being between the first substrate and the second substrate, and a second side of the electrode protecting layer protruding beyond the second substrate.07-07-2011
20110171397Method of forming pattern and manufacturing method of organic light emitting device - A method of forming a pattern and a method of manufacturing an organic light emitting device, the method of forming a pattern including providing an electromagnetic substrate for generating an electromagnetic field at a selectively controllable position by selectively controlling where current flows through the electromagnetic substrate; providing a patterning substrate for forming a pattern; aligning the electromagnetic substrate to a first surface of the patterning substrate; selectively applying current to the electromagnetic substrate to form the electromagnetic field at the predetermined position; providing masking powder in a vicinity of a second surface of the patterning substrate such that the masking powder reacts to the electromagnetic field; supplying a pattern forming material to the second surface of the patterning substrate; and cutting off the current to the electromagnetic substrate.07-14-2011
20110194063FLAT PANEL DISPLAY AND MANUFACTURING METHOD THEREOF - A flat panel display is disclosed. In one embodiment, the display includes i) a first substrate including a display area, wherein at least one display element is formed in the display area, ii) a second substrate covering the display area and connected to the first substrate, iii) a sealant formed between the first and second substrates. In one embodiment, the first substrate and the second substrate comprise a first cut surface and a second cut surface, respectively. Further, each of the first cut surface and the second cut surface has a plurality of corners each of which is concave from the perspective of the display area.08-11-2011

Hyun-Chul Lee, Suwon-Si KR

Patent application numberDescriptionPublished
20080215239METHOD OF DIRECTION-GUIDANCE USING 3D SOUND AND NAVIGATION SYSTEM USING THE METHOD - Provided are a method of voice-guidance and a navigation system that guide a travel route of a mobile vehicle using a 3D sound having directivity. The method includes detecting at least one of a proceeding direction and a destination direction of a mobile vehicle base on navigation data, calculating a proceeding angle of the mobile vehicle and an angle of a destination direction based on at least one of the detected proceeding direction and the destination direction of the mobile vehicle, and generating a 3D direction-guidance sound of corresponding angle by providing the calculated angles to 3D sound technology.09-04-2008
20090298211METHOD FOR MANUFACTURING FLEXIBLE DISPLAY - A method for manufacturing a flexible display is provided. A sacrificial layer is formed on a substrate support, the sacrificial layer having an absorptivity of 1 E+02 to 1 E+06 cm12-03-2009
20100023953METHOD AND APPARATUS FOR EXECUTING APPLICATION - Provided are a method and apparatus for executing a web application, the method including receiving a predetermined application program interface (API) set from an external device in which APIs are stored, parsing and storing the received API set, and executing the web application by using at least one of APIs included in the parsed API set.01-28-2010
20100035503METHOD OF MANUFACTURING FLAT PANEL DISPLAY DEVICE - To minimize stress variations applied to mother glasses when a glass sealing material is melted via a laser to combine the mother glasses, a method of manufacturing a flat panel display device includes providing a plurality of emission units between a first substrate and a second substrate, wherein the first substrates faces the second substrate and each emission unit forms a unit display device; providing a plurality of walls between the first substrate and the second substrate, wherein each wall respectively surrounds one of the emission units; irradiating a laser beam onto the walls, wherein the laser beam is simultaneously irradiated to wall portions aligned in a row in a first direction; scanning the laser beam in a second direction, wherein the second direction is different from the first direction to irradiate other wall portions of the plurality of walls; and cutting the first and second substrates to obtain individual display devices.02-11-2010
20110022957WEB BROWSING METHOD AND WEB BROWSING DEVICE - A web browsing device employing a touch input method and a web browsing method used in the web browsing device are provided. The web-browsing method includes: receiving a panning input on a screen on which a first web page is being displayed; and displaying on the screen a second web page according to a type of the received panning input.01-27-2011

Patent applications by Hyun-Chul Lee, Suwon-Si KR

Hyun-Chul Lee, Gyeonggi-Do KR

Patent application numberDescriptionPublished
20090131090SYSTEM AND METHOD FOR PROVIDING SMS2PSTN UNITED MESSAGING SERVICE USING SMS/MMS GATEWAY - The present invention relates to a method and system for providing an SMS2PSTN united messaging service using an SMS/MMS gateway. The present invention includes an SMS2PSTN service providing server for providing at least one ID information among an e-mail ID, an IM ID, a personal mobile telephone number, a general telephone number information, or a Web address related to the called party telephone number; a database for storing membership registration in-formation, charging information, SMS2PSTN service type, the e-mail ID, the IM ID, the personal mobile telephone number, the general telephone number information or the Web address; and a SMS/MMS gateway for querying with the called party telephone number extracted from the received SMS or MMS messages to the SMS2PSTN service providing server, and transmitting the converted result to the e-mail ID, the IM ID, the personal mobile telephone number, the general telephone number or the Web server.05-21-2009
20100167064REFERENCE WAFER FOR CALIBRATION AND METHOD FOR FABRICATING THE SAME - A reference wafer maintains laser accuracy and calibrates a camera and a laser of a semiconductor equipment. The reference wafer includes a first anti-reflection layer, an adhesive layer, a light absorption layer and a second anti-reflection layer that are stacked over a substrate, a light reflection layer formed over the second anti-reflection layer, and a protection layer formed over the light reflection layer.07-01-2010

Hyun-Chul Lee, Yongin-Si KR

Patent application numberDescriptionPublished
20080219918CATALYST FOR FUEL REFORMING AND METHOD OF PRODUCING HYDROGEN USING THE SAME - A catalyst for fuel reforming including a metal catalyst that includes at least one active component A selected from the group consisting of Pt, Pd, Ir, Rh and Ru; and an active component B that is at least one metal selected from the group consisting of Mo, V, W, Cr, Re, Co, Ce and Fe, oxides thereof, alloys thereof, or mixtures thereof, and a carrier impregnated with the metal catalyst, and a method of producing hydrogen by performing a fuel reforming reaction using the catalyst for fuel reforming. The catalyst for fuel reforming has excellent catalytic activity at a low temperature and improved hydrogen purity. Therefore, when the catalyst for fuel reforming is used, high-purity hydrogen, which can be used as a fuel of a fuel cell, can be produced with high purity.09-11-2008
20080311446FUEL PROCESSOR HAVING TEMPERATURE CONTROL FUNCTION FOR CO SHIFT REACTOR AND METHOD OF OPERATING THE FUEL PROCESSOR - A fuel processor includes a reformer that generates hydrogen gas by reacting a fuel source and water; a burner that heats the reformer to a temperature suitable for a hydrogen generation reaction; a CO shift reactor that removes CO generated during the hydrogen generation reaction in the reformer; a heating element for heating the CO shift reactor; and a cooling element for cooling the CO shift reactor, wherein the cooling element comprises at least one of a cooling water flow line for heat exchange with the CO shift reactor when cooling water flows through the cooling water flow line and a cooling gas flow line for heat exchange with the CO shift reactor when a cooling gas, which is a burner exhaust gas that has heat exchanged with cooling water, flows through the cooling gas flow line. When the fuel processor is operated, a stable CO removal performance can be maintained since the temperature of the CO shift reactor can be actively controlled.12-18-2008
20090035611METHOD OF STARTING FUEL CELL SYSTEM - Provided is a method of starting a polymer electrolyte membrane fuel cell (PEMFC) stack by rapidly increasing the temperature of the PEMFC stack. The PEMFC stack includes: a first flow line that is connected to upper parts of cooling plates installed in a plurality of unit cells of the PEMFC stack; a second flow line that is connected to lower parts of the cooling plates; a coolant reservoir installed between the first flow line and the second flow line; a heat exchanger installed between the first flow line and the coolant reservoir; a by-pass line that connects a point between the coolant reservoir and the second flow line, to the first flow line; a heating element that heats coolant in the by-pass line; a first valve installed between the first flow line and the heat exchanger; and a second valve that selectively connects the coolant reservoir, the second flow line, and the by-pass line. The method of starting a PEMFC stack includes: closing the first valve and controlling the second valve so that the second flow line and the by-pass line are connected to each other, and the coolant in the coolant reservoir is not connected to the second flow line and the by-pass line; and increasing the temperature of the PEMFC stack by heating the coolant in the by-pass line, using the heating element.02-05-2009
20100113263NON-PYROPHORIC SHIFT REACTION CATALYST AND METHOD OF PREPARING THE SAME - A non-pyrophoric shift reaction catalyst includes an oxide carrier impregnated with platinum (Pt) and cerium (Ce). The non-pyrophoric shift reaction catalyst may be prepared by uniformly mixing a platinum precursor, a cerium precursor, and an oxide carrier in a dispersing medium to obtain a mixture; drying the mixture; and calcining the dried mixture. The shift reaction catalyst having a non-pyrophoric property has an excellent reaction activity even at a low temperature and can efficiently remove carbon monoxide in fuel.05-06-2010
20100126070FUEL REFORMER - A fuel reformer, includes: a reformer burner, which generates a flame in a reforming pipe disposed to surround at least the flame of the reformer burner, the reforming pipe being filled with a reforming catalyst and having corrugated portions on a surface facing the reformer burner and a bottom surface of the reforming pipe disposed adjacent to the flame in which a flame blocking member is disposed between the flame of the reformer burner and the reforming pipe to isolate the flame of the reformer burner from the reforming pipe.05-27-2010
20110230337POROUS OXIDE CATALYST AND METHOD OF PREPARING THE POROUS OXIDE CATALYST - A porous oxide catalyst includes porous oxide, and an oxygen vacancy-inducing metal which induces an oxygen vacancy in a lattice structure of a porous metal oxide.09-22-2011

Patent applications by Hyun-Chul Lee, Yongin-Si KR