Dong-Chul
Dong Chul Chae, Gwangyang-Si KR
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20150315686 | HOT-ROLLED STAINLESS STEEL SHEET HAVING EXCELLENT HARDNESS AND LOW-TEMPERATURE IMPACT PROPERTIES - A hot-rolled stainless steel sheet having excellent hardness and low-temperature impact properties, in which a ferrite is formed with martensite as a matrix structure, is manufactured by a steel manufacturing process, a continuous casting process, and a hot-rolling process. The hot-rolled stainless steel sheet comprises C, N, Si, Mn, Cr, Ni, Ti, Nb, Mo, and the remainder being Fe and other inevitable impurities, wherein C is 0.01 to 0.03 wt %, Cr is 11 to 14 wt %, Ti is 0.1 to 0.2 wt %, and Nb is 0.1 to 0.2 wt %. The ferrite stability (FS) expressed by the following [formula 1] is 5 to 50, and a ferrite is formed with martensite as a matrix structure. [Formula 1] 4 FS=−215−619C−16.6Mn+23.7Cr−36.8Ni+42.2Mo+96.2Ti+67Nb−237N+17.2Si, wherein the numerical value of each component described in [Formula 1] denotes the content (wt %) of each component. | 11-05-2015 |
Dong Chul Kang, Anyang-City KR
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20130029683 | WATER-QUALITY MEASUREMENT SYSTEM USING A SMARTPHONE - This invention relates to a system for measuring water quality using a smartphone, and more particularly to a system for measuring water quality using a smartphone, in which, to solve problems of hand-operated and manual water quality measurement methods and in order to increase reliability and accuracy, a water quality meter and a smartphone, which mutually communicate with each other, are utilized, and also, the smartphone is provided with a memory unit, a calculation unit, a GPS unit, etc., thus enabling water quality to be measured in real time and water quality data to be stored and transferred to the outside, so that reliability and accuracy of the measured water quality data may be improved. | 01-31-2013 |
Dong Chul Kim, Gyeonggi-Do KR
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20090241246 | SWIMMING GOGGLES HAVING AIR CHANNELS FOR COMFORT WEARING - A swimming goggle has improved to snugly fit around a user's eyes for comfort wearing. An air channel is adopted to remove an ocular pain due to a pressure in an inner space where the user's eyes are placed when the swimming goggles are worn. The swimming goggle comprises a pair of glasses disposed at a predetermined distance in front of the user's eyes, a set of looped cushions surrounding the glasses for directly contacting around the user's eyes, and a vent hole interconnecting an outer surface with an inner surface of the glasses or penetrating the looped cushions. | 10-01-2009 |
20100044666 | RESISTIVE MEMORY CELLS AND DEVICES HAVING ASYMMETRICAL CONTACTS - A memory cell includes a plug-type first electrode in a substrate, a magneto-resistive memory element disposed on the first electrode, and a second electrode disposed on the magneto-resistive memory element opposite the first electrode. The second electrode has an area of overlap with the magneto-resistive memory element that is greater than an area of overlap of the first electrode and the magneto-resistive memory element. The first surface may, for example, be substantially circular and have a diameter less than a minimum planar dimension (e.g., width) of the second surface. The magneto-resistive memory element may include a colossal magneto-resistive material, such as an insulating material with a perovskite phase and/or a transition metal oxide. | 02-25-2010 |
20100067453 | METHOD FOR ALLOCATING PILOTS - There is provided a method for allocating pilots to a sub-frame. The sub-frame includes a plurality of blocks in time domain. The method includes allocating a data demodulation (DM) pilot used for demodulating data to two blocks spaced not contiguous with each other, and allocating a channel quality (CQ) pilot. System capacity can be increased, and degradation of performance incurred by a channel estimation error can be minimized. | 03-18-2010 |
20110204314 | RESISTIVE MEMORY CELLS AND DEVICES HAVING ASYMMETRICAL CONTACTS - A memory cell includes a plug-type first electrode in a substrate, a magneto-resistive memory element disposed on the first electrode, and a second electrode disposed on the magneto-resistive memory element opposite the first electrode. The second electrode has an area of overlap with the magneto-resistive memory element that is greater than an area of overlap of the first electrode and the magneto-resistive memory element. The first surface may, for example, be substantially circular and have a diameter less than a minimum planar dimension (e.g., width) of the second surface. The magneto-resistive memory element may include a colossal magneto-resistive material, such as an insulating material with a perovskite phase and/or a transition metal oxide. | 08-25-2011 |
20130177896 | TEACHING TOOL FOR UNDERSTANDING SHAPES WHICH HAVE VARYING FORMS DEPENDING ON VIEWING POSITION - The present invention discloses a teaching tool for easier understanding of a diagram looking different depending on viewing angles. The teaching tool includes a transparent body ( | 07-11-2013 |
Dong Chul Kim, Seoul KR
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20080240285 | SEQUENCE GENERATING METHOD FOR EFFICIENT DETECTION AND METHOD FOR TRANSMITTING AND RECEIVING SIGNALS USING THE SAME - A sequence generation method for allowing a reception end to effectively detect a sequence used for a specific channel of an OFDM communication system, and a signal transmission/reception method using the same are disclosed. During the sequence generation, an index is selected from among the index set having the conjugate symmetry property between indexes, and a specific part corresponding to the frequency “0” is omitted from a transmitted signal. In addition, a reception end can calculate a cross-correlation value between a received (Rx) signal and each sequence using only one cross-correlation calculation based on the conjugate symmetry property. | 10-02-2008 |
Dong Chul Kim, Trondheim NO
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20130334497 | NANOWIRE EPITAXY ON A GRAPHITIC SUBSTRATE - A composition of matter comprising at least one nanowire on a graphitic substrate, said at least one nanowire having been grown epitaxially on said substrate, wherein said nanowire comprises at least one group III-V compound or at least one group II-VI compound or comprises at least one non carbon group (IV) element. | 12-19-2013 |
20150076450 | NANOWIRE DEVICE HAVING GRAPHENE TOP AND BOTTOM ELECTRODES AND METHOD OF MAKING SUCH A DEVICE - A composition of matter comprising a plurality of nanowires on a substrate, said nanowires having been grown epitaxially on said substrate in the presence of a metal catalyst such that a catalyst deposit is located at the top of at least some of said nanowires, wherein said nanowires comprise at least one group III-V compound or at least one group II-VI compound or comprises at least one non carbon group IV element; and wherein a graphitic layer is in contact with at least some of the catalyst deposits on top of said nanowires. | 03-19-2015 |
20150194549 | SOLAR CELLS - A composition of matter, in particular a photovoltaic cell, comprising: at least one core semiconductor nanowire on a graphitic substrate, said at least one core nanowire having been grown epitaxially on said substrate wherein said nanowire comprises at least one group III-V compound or at least one group II-VI compound or at least one group IV element; a semiconductor shell surrounding said core nanowire, said shell comprising at least one group III-V compound or at least one group II-VI compound or at least one group IV element such that said core nanowire and said shell form a n-type semiconductor and a p-type semiconductor respectively or vice versa; and an outer conducting coating surrounding said shell which forms an electrode contact. | 07-09-2015 |
Dong Chul Kim, Anyang-Si KR
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20120147770 | METHOD FOR ALLOCATING PILOTS - This is provided a method for allocating pilots to a sub-frame. The sub-frame includes a plurality of blocks in time domain. The method includes allocating a data demodulation (DM) pilot used for demodulating data to two blocks spaced not contiguous with each other, and allocating a channel quality (CQ) pilot. System capacity can be increased, and degradation of performance incurred by a channel estimation error can be minimized. | 06-14-2012 |
20130010881 | METHOD FOR ALLOCATING PILOTS - This is provided a method for allocating pilots to a sub-frame. The sub-frame includes a plurality of blocks in time domain. The method includes allocating a data demodulation (DM) pilot used for demodulating data to two blocks spaced not contiguous with each other, and allocating a channel quality (CQ) pilot. System capacity can be increased, and degradation of performance incurred by a channel estimation error can be minimized. | 01-10-2013 |
Dong Chul Ko, Seoul KR
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20150343970 | MOBILE ENERGY STORAGE SYSTEM - An energy storage system is provided. The system includes an energy storage device including at least one battery module, a power adjuster that adjusts power of the energy storage device, a controller that controls the energy storage device and the power adjuster, a rack that accommodates the energy storage device, the power adjuster and the controller, the rack including at least one stationary coupler fixed to a movable unit and at least one support device that supports the energy storage system against the moveable unit. | 12-03-2015 |
Dong Chul Koo, Seongnam KR
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20110068379 | METHOD OF MANUFACTURING SEMICONDUCTOR DEVICE - A gate pattern is formed on a semiconductor substrate. An interlayer insulating layer is formed on the semiconductor substrate and then etched by using a SEG mask to form a SEG contact formation region. An exposed portion of the semiconductor substrate in the SEG contact formation region is uniformly grown and a source/drain region is formed in a grown portion of the semiconductor substrate through an ion implantation process. | 03-24-2011 |
20110193150 | SEMICONDUCTOR DEVICE INCLUDING RESERVOIR CAPACITOR AND METHOD OF MANUFACTURING THE SAME - A method of manufacturing a semiconductor memory device includes forming a first capacitor using a metal oxide semiconductor (MOS) transistor, forming a second capacitor being a pillar type corresponding to a cell capacitor formed in a cell region, and forming a third capacitor over the first and the second capacitors | 08-11-2011 |
Dong Chul Lee, Daejeon KR
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20120321635 | Composition Containing Inhibitors of the Expression or Activity of SH3RF2 for Preventing or Treating Cancer - The present invention relates to a composition comprising an inhibitor of the expression or activity of SH3 domain containing ring finger 2 (SH3RF2) for preventing or treating cancers. More specifically, since the SH3RF2 protein, of which the expression level increases in various cancer tissues, binds to PAK4, which is a cancer-associated gene, to regulate an apoptosis inhibitory function of the PAK4 protein by ubiquitination activity of SH3RF2 RING domain, cancer cells, in which the expression of SH3RF2 is inhibited, sensitively respond to the induction of apoptosis to promote apoptosis and reduce in vivo tumorigenicity, such that the inhibitor of the expression or activity of SHRF2 can be useful as a composition for preventing or treating cancers. | 12-20-2012 |
Dong Chul Park, Suwon-Si KR
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20110298781 | CIRCUIT FOR CONTROLLING DATA DRIVER AND DISPLAY DEVICE INCLUDING THE SAME - Circuits for controlling a data driver of a display device are provided. The circuit may include a bias block that may output a first or second bias current or voltage to the data driver and a control unit that may control the bias block to output the first or second bias current or voltage based on a control signal. | 12-08-2011 |
Dong Chul Park, Gyeonggi-Do KR
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20100329477 | SYSTEM FOR PROVIDING A PERSONALIZED DRIVING SOUND - The present invention relates to a system for providing a personalized driving sound by using an active sound design. The system includes a sound design tool, a memory card, and an audio system. The sound design tool enables a user to create the driving sound. The memory card receives and stores the created driving sound from the sound design tool. The audio system outputs the driving sound stored in the memory card. | 12-30-2010 |
Dong Chul Park, Anyang-Si KR
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20150124989 | SYSTEM FOR CONTROLLING VEHICLE INTERIOR SOUND USING SMART PHONE AND METHOD THEREOF - A system for controlling vehicle interior sound using a smart phone and a method thereof include a driving information provider to provide driving information while a vehicle is being driven. A smart phone includes a microphone which senses interior noise or sound of the vehicle and generates a sound control signal to diminish or amplify the interior noise based on the driving information from the driving information provider. An audio amplifier amplifies the sound control signal received from the smart phone and outputs an amplified signal though a speaker. | 05-07-2015 |
Dong Chul Seo, Chungcheongnam-Do KR
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20120172606 | SULFONIUM COMPOUND, PHOTO-ACID GENERATOR, AND METHOD FOR MANUFACTURING THE SAME - A sulfonium compound represented by formula (1), a photo-acid generator, and a method for producing a sulfonium compound are provided: | 07-05-2012 |
20120189963 | WATER-SOLUBLE RESIN COMPOSITION AND METHOD OF FORMING FINE PATTERNS BY USING THE SAME - A water-soluble resin composition for forming fine patterns comprising water-soluble polymer represented by Chemical Formula 1 as below and the first water-soluble solvent, is coated and heated on a photoresist layer having at least one contact hole to reduce a size of the at least one contact hole. | 07-26-2012 |
20120203024 | PHOTOACID GENERATOR, METHOD FOR PRODUCING THE SAME, AND RESIST COMPOSITION COMPRISING THE SAME - A photoacid generator represented by the following formula (1), a method for producing the photoacid generator, and a resist composition containing the photoacid generator are provided. | 08-09-2012 |
Dong Chul Shin, Suwon-Si KR
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20130018052 | 2-PYRIDYL SUBSTITUTED IMIDAZOLES AS ALK5 AND/OR ALK4 INHIBITORS - The present invention provides a novel 2-pyridyl substituted imidazole derivative, or a pharmaceutically acceptable salt or solvate thereof, which selectively inhibits the transforming growth factor-β (TGF-β) type I receptor (ALK5) and/or the activin type I receptor (ALK4); a pharmaceutical composition comprising same as an active ingredient; and a use of the 2-pyridyl substituted imidazole derivative for the manufacture of a medicament for preventing or treating a disease mediated by ALK5 and/or ALK4 receptors in a mammal. | 01-17-2013 |
Dong Chul Shin, Geoje-Si, Gyeongsangnam-Do KR
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20140103359 | SEMICONDUCTOR LIGHT-EMITTING DEVICE AND METHOD FOR MANUFACTURING SAME - A semiconductor light emitting device having enhanced luminous efficiency and a manufacturing method thereof are provided. The semiconductor light emitting device includes: an n-type semiconductor layer having at least one pit formed in an upper surface thereof; an active layer formed on the n-type semiconductor layer, a region of the active layer corresponding to the pit having an upper surface bent along the pit; and a p-type semiconductor layer formed on the active layer, a region of the p-type semiconductor layer corresponding to the pit having an upper surface bent along the bent portion of the active layer. | 04-17-2014 |
Dong Chul Shin, Geojae KR
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20110121259 | NITRIDE SEMICONDUCTOR LIGHT EMITTING DEVICE - There is provided a nitride semiconductor light emitting device including an active layer having enhanced external quantum efficiency at both low and high current density. The nitride semiconductor light emitting device includes a first conductivity type nitride semiconductor layer; an active layer disposed on the first conductivity type nitride semiconductor layer and having a plurality of quantum well layers and at least one quantum barrier layer alternately arranged; and a second conductivity type nitride semiconductor layer disposed on the active layer. The plurality of quantum well layers disposed adjacent to each other include first and second quantum well layers having different thicknesses. | 05-26-2011 |
Dong Chul Shin, Daejeon KR
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20150045603 | CATALYST SYSTEMS FOR PREPARING 1-HEXENE AND/OR 1-OCTENE FROM ETHYLENE - This invention relates to a catalyst system for selective oligomerization of ethylene, which includes (i) a chromium compound; (ii) a ligand having a P—C—C—P backbone structure; and (iii) an activator, thus preparing 1-hexene and/or 1-octene with high activity and selectivity. | 02-12-2015 |
Dong-Chul Choi, Yongin-Si KR
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20160041578 | CLOCK SWITCH DEVICE AND SYSTEM-ON-CHIP HAVING THE SAME - A clock switch device includes a controller and a switching circuit. The controller sets a clock switch period using a control signal when a logic level of a mode signal is changed. The switching circuit receives a first clock signal, a second clock signal and an auxiliary clock signal. The switching circuit, based on the control signal, outputs one clock signal between the first clock signal and the second clock signal as a glitch free clock signal before the clock switch period, stops outputting the one clock signal and outputs the auxiliary clock signal as the glitch free clock signal during the clock switch period, and stops outputting the auxiliary clock signal and outputs another clock signal between the first clock signal and the second clock signal as the glitch free clock signal after the clock switch period. | 02-11-2016 |
Dong-Chul Choi, Seoul KR
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20090072810 | Voltage-drop measuring circuit, semiconductor device and system having the same, and associated methods - A voltage-drop measuring circuit is capable of measuring a voltage-drop of a power supply voltage caused by a resistance component of a power line. The voltage-drop measuring circuit includes a sensing circuit and a voltage-drop detecting circuit. The sensing circuit includes a sensor configured to generate a sensing voltage received by the sensor from a power pad through a power line between the sensor and the power pad. The voltage-drop detecting circuit is arranged in a neighborhood of a power pad, and is configured to generate a reference voltage, compare the sensing voltage with the reference voltage to detect the voltage-drop, and generate a detecting signal in accordance with the voltage-drop. | 03-19-2009 |
20090251479 | Display Interface System, Display Device and Display System - A display interface system includes a display transmitter and a display receiver. The display transmitter transmits a control pattern having image type information about a type of an image to be displayed and selectively transmits image data according to the type of the image to be displayed. The display receiver receives the control pattern and selectively receives the image data based upon the image type information, reducing power consumption. | 10-08-2009 |
Dong-Chul Han, Gangnam-Gu KR
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20090072644 | THRUST MAGNETIC BEARING SYSTEM - A thrust magnetic bearing system separates magnetic circuits of electromagnets from those of permanent magnets so that each permanent magnet produces a bias magnetic field while each electromagnet functions only to control the position of a rotating body, thereby achieving desired displacement and current stiffness without flowing a bias current through the electromagnet. The magnetic bearing system includes a thrust displacement sensor and a thrust magnetic bearing to float a disk floating body based on displacement information detected through the displacement sensor. The magnetic bearing includes a donut permanent magnet, a pair of electromagnets connected in series to form an inductor at both sides of the donut permanent magnet, and a pair of magnetic poles provided opposite each other outside the pair of electromagnets. The magnetic bearing floats the floating body through a bias magnetic flux generated by the permanent magnet and a control magnetic flux generated by the electromagnets. | 03-19-2009 |
Dong-Chul Hwang, Nam-Gu KR
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20130121541 | Method And Apparatus To Authenticate User - A method of authenticating a user of a second device connected to a first device peer-to-peer (P2P) on a network, the method including receiving real-time image information containing a face of the user of the second device from the second device, displaying the received real-time image information on a screen of the first device, receiving user authentication information to determine whether the user of the second device is authenticated with reference to the displayed real-time image information, from a user of the first device, and authenticating the user of the second device, based on the received user authentication information. | 05-16-2013 |
Dong-Chul Kang, Dongan-Gu KR
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20090203885 | Astrocyte Modulated Genes And Uses Thereof - The present invention relates to Astrocyte Modulated Genes (AMGs). AMGs are genes whose expression are modulated in human astrocytes grown in primary cell culture following the exposure of these cells to either the human immunodeficiency virus HIV-1 or to the HIV-1 protein gp120. AMGs comprise both Astrocyte Enhanced Genes (AEGs) and Astrocyte Suppressed Genes (ASGs). Thus, the present invention further relates to Astrocyte Enhanced Genes (AEGs), the expression of which are up-regulated in human astrocytes grown in primary cell culture that are exposed to either the human immunodeficiency virus HIV-1 or to the HIV-1 protein gp120, and to Astrocyte Suppressed Genes (ASGs), the expression of which are downregulated in human astrocytes grown in primary cell culture that are exposed to either the human immunodeficiency virus HIV-1 or to the HIV-1 protein gp120. Because they may play a role in HIV-associated dementia (“HAD”), AMGs may be used as markers in methods for screening for drugs that treat or prevent HAD. | 08-13-2009 |
Dong-Chul Lee, Gumi-Si KR
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20120206406 | TOUCH SCREEN - Provided is a touch screen that includes a first sensor layer and a second sensor layer. The first sensor layer and the second sensor layer form a sensor for recognizing a touch position on the touch screen. | 08-16-2012 |
20120223901 | METHOD OF MANUFACTURING TRANSPARENT CIRCUIT SUBSTRATE FOR TOUCH SCREEN - Provided is a method of manufacturing a transparent circuit substrate for a touch screen. The method may involve forming an electrode layer on a transparent substrate, stacking a light shielding layer on the transparent substrate such that the light shielding layer is located on an outside of the electrode layer, stacking a mask on the light shielding layer and the electrode layer, forming a conductive layer on the mask, forming connecting lines for connecting the electrode layer and connecting terminals by removing the mask and a portion of the conductive layer, and forming the connecting terminals on the light shielding layer such that the connecting terminals contact the connecting lines. | 09-06-2012 |
20120235953 | TOUCH PANEL AND TOUCH SCREEN HAVING THE SAME - Provided herein is a capacitive-type touch panel. The capacitive-type touch panel may include a first transparent substrate, a first conductive layer positioned on the first transparent substrate, a sensor layer having a second conductive layer spaced from the first conductive layer by a spacer, and a second transparent substrate positioned on the sensor layer. The first conductive layer and the second conductive layer may be transparent. | 09-20-2012 |
20140362311 | METHOD OF MANUFACTURING TRANSPARENT CIRCUIT SUBSTRATE FOR TOUCH SCREEN - Provided is a method of manufacturing a transparent circuit substrate for a touch screen. The method may involve forming an electrode layer on a transparent substrate, stacking a light shielding layer on the transparent substrate such that the light shielding layer is located on an outside of the electrode layer, stacking a mask on the light shielding layer and the electrode layer, forming a conductive layer on the mask, forming connecting lines for connecting the electrode layer and connecting terminals by removing the mask and a portion of the conductive layer, and forming the connecting terminals on the light shielding layer such that the connecting terminals contact the connecting lines. | 12-11-2014 |
Dong-Chul Lee, Suwon-Si KR
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20160035774 | IMAGE SENSORS AND METHODS OF FABRICATING THE SAME - An image sensor includes a photoelectric conversion element in a substrate, a first storage region spaced apart from the photoelectric conversion element in the substrate, a gate on the first storage region, a light shielding layer covering the gate, a dielectric layer disposed between the gate and the light shielding layer and extending onto a top surface of the substrate, an interlayer insulating structure covering the light shielding layer, and a micro-lens overlapping with the photoelectric conversion element on the interlayer insulating structure. The light shielding layer includes a first portion covering a sidewall of the gate, and a second portion on a top surface of the gate. The first portion has a first thickness corresponding to a vertical height from a bottom surface of the first portion to a top surface of the first portion, and the first thickness is greater than a second thickness of the second portion. | 02-04-2016 |
Dong-Chul Lee, Seoul KR
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20100290765 | HEATER - Disclosed is a heater capable of supplying heated air to any desired place. The heater includes a heater housing having an air-inflow part and a first air-discharge port, a heating unit disposed in the heater housing to heat air, and a heated-air supply guide connected to the first air-discharge port and guiding heated air discharged through the first air-discharge port 121. The heated-air supply guide has a variable flow channel to change a heated-air supply zone. The heater can perform rapid local heating for a desired place, reduce energy consumption, and improve use convenience. | 11-18-2010 |
20110067178 | HEATING AIR MAT AND AIR MAT HEATING SYSTEM HAVING THE SAME - A heating air mat which supplies heated air into the mat to provide heat to a user, and an air mat heating system including the same are disclosed. The air mat heating system includes a heating air mat having a mat body and a heated air injection part through which the heated air is injected into the mat body, and a heater connected to the heated air injection part of the air mat to supply the heated air into the air mat. The air mat provides heat to the body of a user by supplying heated air into the air mat, thereby eliminating accidents relating to the use of electricity while ensuring good heating efficiency and to reduction of energy consumption when used for local heating and assistant heating. | 03-24-2011 |
Dong-Chul Shin, Gyeonggi-Do KR
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20100099773 | INCLUSION COMPLEX OF SIBUTRAMINE AND BETA-CYCLODEXTRIN - The present invention relates to a sibutramine-containing inclusion complex having superior storage stability, and particularly to a pharmaceutically stable inclusion complex suitable for the drug formulation, which prepared by reacting a sibutramine (N,N-dimethyl-1-[1-(4-chlorophenyl)-cyclobutyl]-3-methylbutylamine) of Formula 1 and beta-cyclodextrin in a predetermined ratio, its preparation method and a pharmaceutical composition comprising the same. | 04-22-2010 |
20120315578 | APPARATUS AND METHOD FOR SPIN-COATING, AND METHOD FOR MANUFACTURING SUBSTRATE HAVING STRUCTURE - Disclosed herein are an apparatus and a method for spin coating, and a method for manufacturing a substrate having a structure. The spin-coating apparatus includes a support to support a substrate having a structure, a motor to rotate the support to perform spin-coating with respect to the structure, and a heat source to heat a coating material which is subjected to the spin-coating to perform pre-baking. The method for spin-coating a substrate having a structure includes preparing the substrate having the structure of a predetermined height formed on an upper portion thereof, coating the structure of the substrate with photoresist, and performing spin-coating of the photoresist in a place in which a heat source is provided, while performing pre-baking of the photoresist. | 12-13-2012 |
Dong-Chul Yoo, Seongham-Si KR
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20120115309 | Methods of Manufacturing a Vertical Type Semiconductor Device - Methods of manufacturing a semiconductor device include forming a stopping layer pattern in a first region of a substrate. A first mold structure is formed in a second region of the substrate that is adjacent the first region. The first mold structure includes first sacrificial patterns and first interlayer patterns stacked alternately. A second mold structure is formed on the first mold structure and the stopping layer pattern. The second mold structure includes second sacrificial patterns and second interlayer patterns stacked alternately. The second mold structure partially covers the stopping layer pattern. A channel pattern is formed and passes through the first mold structure and the second mold structure. | 05-10-2012 |