Patents by Inventor Chang-Kyu Lee
Chang-Kyu Lee has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240166016Abstract: A vehicular air conditioning system includes: a refrigerant circulation line including first and second evaporators through which refrigerant can flow in a cooling mode, and first and second expansion valves configured to depressurize and expand the refrigerant introduced into each of the first and second evaporators; and refrigerant flow control part provided in front of the first evaporator and the first expansion valve and configured to control refrigerant flow. The first evaporator is used for cooling rear seat region of a passenger room and the refrigerant flow control part is configured to supply and block the refrigerant with respect to the first evaporator and the first expansion valve and is configured to block the refrigerant when the cooling governed by the first evaporator is controlled in a turn-off mode and supply the refrigerant to the first evaporator and the first expansion valve depending on the on/off condition of the cooling governed by the second evaporator.Type: ApplicationFiled: November 14, 2023Publication date: May 23, 2024Inventors: Hwan Kyu CHO, Jae Woo KO, Dong Gyun KIM, Chang Soo BAE, Joon Yeong LEE, Gyu Ik HAN
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Patent number: 11991347Abstract: Provided is an image processing device configured to compress first image data. The image processing device includes an encoding circuit configured to compress the first image data into second image data including prediction data and residual data, compress the second image data into third image data by performing entropy encoding on the second image data, generate a header representing a compression ratio of the third image data, and store the third image data along with the header in a memory device as compressed first image data.Type: GrantFiled: July 16, 2021Date of Patent: May 21, 2024Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Sung Ho Jun, Chang Soo Park, Moon Kyu Song, Kyung Koo Lee, Kil Whan Lee, Hyuk Jae Jang, Kyung Ah Jeong
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Publication number: 20240139669Abstract: A method for preparing hydrogen from ammonia by using pressure swing adsorption (PSA) is provided. The method for preparing hydrogen from ammonia, of the present invention, comprises the steps of: generating hydrogen and nitrogen from ammonia gas through a high-temperature reaction by using a catalyst; performing purification by selectively adsorbing unreacted ammonia gas from a gas containing unreacted ammonia and low-purity hydrogen and nitrogen, which are supplied through the high-temperature reaction and cooled; and performing purification by separating high-purity hydrogen from the gas consisting of low-purity hydrogen and nitrogen, wherein purification is carried out by using a carbon molecular sieve (CMS) adsorbent so as to desorb the unreacted ammonia gas through PSA.Type: ApplicationFiled: November 10, 2022Publication date: May 2, 2024Applicants: POSCO CO., LTD, RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGYInventors: Chi-Kyu Ahn, Chang-Houn Rhee, Gook-Hee Kim, Man-Su Lee, Hai-Woong Park, Beom-Sik Kim, Seong-Min Son
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Publication number: 20240124666Abstract: A polyimide precursor monomer having an E value of 2.0 or more calculated by Equation 1 is selected among polyimide raw materials. A polyimide includes a structural unit derived from the polyimide precursor monomer having the E value of 2.0 or more. Optical properties of a polyimide film formed from the polyimide can be improved, and the optical properties of a polyimide film can be predicted from the E value of the polyimide precursor monomer even before production of the polyimide film.Type: ApplicationFiled: September 19, 2023Publication date: April 18, 2024Inventors: Chang Q LEE, Hyo Shin KWAK, Cheol Min YUN, Seung Min JEON, Hyun Kyu CHO
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Publication number: 20240109397Abstract: A method for controlling an electric heater of a vehicular heating, ventilation, and air conditioning (HVAC) system includes turning on the electric heater; determining whether an ambient air temperature of a vehicle is higher than or equal to a threshold ambient air temperature, and a battery temperature is lower than or equal to a threshold battery temperature; determining whether battery efficiency is lower than or equal to threshold efficiency when the ambient air temperature of the vehicle is higher than or equal to the threshold ambient air temperature, and the battery temperature is lower than or equal to the threshold battery temperature; and turning off the electric heater when the battery efficiency is lower than or equal to the threshold efficiency, wherein the electric heater is configured to receive electric energy from the battery.Type: ApplicationFiled: March 30, 2023Publication date: April 4, 2024Inventors: Dae Hyun Song, Chang Gi Ryu, Woo Jin Lee, Dong Ju Ko, Hyun Hun Choi, Chun Kyu Kwon, In Uk Ko
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Patent number: 11946742Abstract: In an example, a display device includes a rollable display including a display side and an opposite non-display side. The rollable display includes a conductive material with a pattern disposed on the non-display side. The device includes a housing configured to house the rollable display and configured to roll in and roll out the rollable display along a first direction, and a capacitive sensor including a transmitter and a receiver electrode disposed within the housing and configured to sense the pattern.Type: GrantFiled: July 13, 2021Date of Patent: April 2, 2024Assignee: STMicroelectronics Asia Pacific Pte Ltd.Inventors: Tae-gil Kang, Sung Kyu Kim, Sa Hyang Hong, Chang Woo Lee
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Publication number: 20240103362Abstract: Disclosed herein is a method of printing a nanostructure including: preparing a template substrate on which a pattern is formed; forming a replica pattern having an inverse phase of the pattern by coating a polymer thin film on an upper portion of the template substrate, adhering a thermal release tape to an upper portion of the polymer thin film, and separating the polymer thin film from the template substrate; forming a nanostructure by depositing a functional material on the replica pattern; and printing the nanostructure deposited on the replica pattern to a substrate by positioning the nanostructure on the substrate, applying heat and pressure to the nanostructure, and weakening an adhesive force between the thermal release tape and the replica pattern by the heat.Type: ApplicationFiled: September 19, 2023Publication date: March 28, 2024Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Jong Min KIM, Seung Yong LEE, So Hye CHO, Ho Seong JANG, Jae Won CHOI, Chang Kyu HWANG
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Patent number: 11943987Abstract: A color conversion substrate and a display device are provided. The color conversion substrate includes a base substrate, a first color filter and a second color filter disposed on a surface of the base substrate, a first partition layer disposed between the first color filter and the second color filter, a second partition layer disposed on the first partition layer, a first wavelength conversion pattern disposed on the first color filter and a second wavelength conversion pattern disposed on the second color filter, wherein the first partition layer includes a first lower surface disposed on the first color filter and a second lower surface disposed on the second color filter.Type: GrantFiled: June 11, 2020Date of Patent: March 26, 2024Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Gak Seok Lee, Byung Chul Kim, In Ok Kim, Jae Min Seong, In Seok Song, Keun Chan Oh, Ji Eun Jang, Chang Soon Jang, Sun Kyu Joo, Ha Lim Ji
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Publication number: 20240091759Abstract: Disclosed herein is a method of depositing a transition metal single-atom catalyst including preparing a carbon carrier, and depositing a transition metal single-atom catalyst on the carbon carrier, in which the carbon carrier is surface-treated by an oxidation process, and wherein the deposition is carried out by an arc plasma process.Type: ApplicationFiled: September 15, 2023Publication date: March 21, 2024Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Jong Min KIM, Sang Hoon KIM, Chang Kyu HWANG, Seung Yong LEE, So Hye CHO, Jae Won CHOI
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Publication number: 20230414691Abstract: Provided is a composition including a fraction of the Syzygium formosum extract as an active ingredient, which inhibits the expression of inflammatory cytokines to prevent, ameliorate, or treat inflammation disease, and when the composition is included in cosmetics, the prepared cosmetics may have high stability.Type: ApplicationFiled: September 7, 2021Publication date: December 28, 2023Applicant: CARBOEXPERT INC.Inventors: Chang Kyu LEE, Nan Young LEE, Hyunah PARK, Thi Minh Nguyet NGUYEN
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Publication number: 20230302017Abstract: The present disclosure relates to inotodiol as a liver X receptor agonist and use thereof for the treatment of a liver X receptor-mediated disease. Inotodiol according to an aspect, or a prodrug thereof has LXR?-specific agonist activity, and thus not only has remarkable safety compared to other LXR agonists, but can also be effectively used in the treatment of LXR-related diseases, such as a neurodegenerative brain disease, an autoimmune disease, NASH, and NAFLD.Type: ApplicationFiled: August 6, 2021Publication date: September 28, 2023Applicant: CARBOEXPERT INC.Inventors: Chang Kyu Lee, So Young Ban, Kyubeen Park, Nan Young Lee, Hyunah Park, Wonhee Lee
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Publication number: 20230220122Abstract: Provided are a method of manufacturing a functional polysaccharide, the method including: preparing a cell containing a polysaccharide; crushing the cell to extract polysaccharide to the outside of the cell to obtain an extract; and purifying the extract by removing at least one of crude protein, crude fat, and crude powder from the extract, and a cosmetic composition for skin moisturizing or skin elasticity improvement, the cosmetic composition including the functional polysaccharide as an active ingredient.Type: ApplicationFiled: September 18, 2019Publication date: July 13, 2023Applicant: CARBOEXPERT INC.Inventors: Chang Kyu LEE, Min Jee YOO, Hyun Ah YU, Jin Ju BAE
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Publication number: 20230177523Abstract: The present disclosure relates to a method and an apparatus for a digital twin-based carbon emission management. A method according to an embodiment of the present disclosure may comprise: transmitting a request for information on a price of carbon emission credits; receiving a response including information on the price of the carbon emission credits; performing a simulation for carbon emission transaction and equipment operation based on the received price of the carbon emission credits and a digital twin for equipment operation; transmitting a request for carbon transaction according to the price of the carbon emission credits, based on a result of the simulation; and completing the carbon transaction by receiving a response to the request for the carbon transaction.Type: ApplicationFiled: December 1, 2022Publication date: June 8, 2023Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Hyun Jeong LEE, Chang Kyu LEE, Yong Woon KIM, Sang Keun YOO
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Publication number: 20230120066Abstract: An image sensor includes a substrate, a pixel isolation pattern in the substrate and defining unit pixel regions in the substrate, color filters on the substrate and corresponding to the unit pixel regions, respectively, a low-refractive index pattern between adjacent color filters of the color filters to at least partially isolate the adjacent color filters from direct contact with each other, an insulating structure between the substrate and the color filters, and a light blocking pattern vertically overlapping with the pixel isolation pattern. The light blocking pattern is within the insulating structure and is isolated from direct contact with the low-refractive index pattern.Type: ApplicationFiled: July 1, 2022Publication date: April 20, 2023Applicant: Samsung Electronics Co., Ltd.Inventors: Minkwan KIM, Chang Kyu LEE, In Sung JOE, Junhong KIM, Jinsun PYO
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Publication number: 20230064084Abstract: An image sensor including: a semiconductor substrate including a plurality of pixel regions; an anti-reflection layer on the semiconductor substrate; color filters provided on the anti-reflection layer and in the pixel regions; and a fence structure disposed between adjacent ones of the color filters, wherein the fence structure includes: a lower portion penetrating the anti-reflection layer; an upper portion on the anti-reflection layer; and an intermediate portion between the lower portion and the upper portion, wherein the fence structure has undercut regions, which are provided at both sides of the intermediate portion and are between the upper portion of the fence structure and a top surface of the anti-reflection layer.Type: ApplicationFiled: July 18, 2022Publication date: March 2, 2023Inventors: MINHWAN JEON, Chanho Park, Kyung Rae Byun, Chang Kyu Lee, Chongkwang Chang
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Publication number: 20220218593Abstract: Provided is a composition for skin whitening, including a Syzygium formosum extract as an active ingredient. The Syzygium formosum extract has excellent tyrosinase inhibitory activity, and thus can be usefully used as a cosmetic composition for skin whitening or a composition for preventing or alleviating melanin hyperpigmentation diseases. In addition, the Syzygium formosum extract has excellent antibacterial and antiatopic activities, thereby being useful as an antibacterial and antiatopic composition.Type: ApplicationFiled: October 10, 2019Publication date: July 14, 2022Inventors: Chang Kyu LEE, Min Jee YOO, Hyun Ah YU, Jin Ju BAE, Nan Young LEE
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Publication number: 20220102405Abstract: An image sensor is provided and may include a semiconductor substrate having a surface and including trench, the trench extending from the surface into the semiconductor substrate, an insulating pattern provided in the trench and a doped region in the semiconductor substrate and on the insulating patterns. The doped region includes a side portion on a side surface of the insulating pattern, and a bottom portion on a bottom surface of the insulating pattern. A thickness of the side portion of the doped region is from 85% to 115% of a thickness of the bottom portion of the doped region, and a number of dopants per unit area in the side portion of the doped region is from 85% to 115% of a number of dopants per unit area in the bottom portion.Type: ApplicationFiled: April 23, 2021Publication date: March 31, 2022Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Kook Tae KIM, Chang Kyu LEE, Dongmo IM, Ju-eun KIM, Miseon PARK, Jungim CHOE, Soojin HONG
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Patent number: 11085360Abstract: A swirl chamber-type diesel engine includes a secondary combustion chamber assembly coupled to a cylinder head to define a secondary combustion chamber having, on an inner wall surface thereof, a curved swirl induction part, and a connecting passage formed at a lower end of the swirl induction part; and a piston defining a primary combustion chamber and including a trench part being in communication with the connecting passage, and clover parts formed at both sides of the trench part, in which a bottom surface of the clover part has a stereoscopic structure in which a height of a bottom surface in a second region, which is distant in a direction of a flow of the combustion gas at a predetermined distance from a first region into which the combustion gas is introduced from the trench part is greater than a height of a bottom surface in the first region.Type: GrantFiled: August 13, 2018Date of Patent: August 10, 2021Assignee: LS MTRON LTD.Inventors: Jae Young Jeong, Chang Kyu Lee
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Patent number: 11085359Abstract: A swirl chamber-type diesel engine includes a secondary combustion chamber assembly coupled to a cylinder head to define a secondary combustion chamber having, on an inner wall surface thereof, a curved swirl induction part, and a connecting passage formed at a lower end of the swirl induction part, and a piston defining a primary combustion chamber and including a trench part being in communication with the connecting passage, and clover parts formed at both sides of the trench part, in which a guide structure is provided in the connecting passage, and the guide structure divides combustion gas, discharged from the secondary combustion chamber to the primary combustion chamber, into three portions and guides the combustion gas.Type: GrantFiled: August 13, 2018Date of Patent: August 10, 2021Assignee: LS MTRON LTD.Inventors: Jae Young Jeong, Chang Kyu Lee
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Publication number: 20210130926Abstract: The present invention relates to a method for recovering nickel and cobalt from a nickel, iron, and cobalt-containing raw material. According to the present invention, high concentrations of valuable metals, such as nickel and cobalt, can be recovered from a raw material containing nickel, iron, and cobalt, and especially, the concentrations of nickel and cobalt are low and the concentration of iron is high, and thus when nickel is leached, and relatively large amount of iron is leached, whereas a small amount of nickel is leached. Therefore, the present invention can be more suitably applied in the smelting of nickel ore in which the separation of iron and nickel is difficult.Type: ApplicationFiled: December 22, 2017Publication date: May 6, 2021Inventors: Byong-Pil LEE, Gil-Soo HAN, Jin-Gyun PARK, Jae-Young LEE, Hyung-Sub EOM, Sung-Koo JO, Chang-Kyu LEE, Yong-Chan KIM, Deok KIM, Go-Gi LEE