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: 20250129331Abstract: The present invention relates to a medium composition for culture of extraembryonic endoderm stem cells, and more specifically, to a medium composition for in vitro culture of extraembryonic endoderm stem cells.Type: ApplicationFiled: July 4, 2023Publication date: April 24, 2025Applicants: SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION, SPACE F CORPORATIONInventors: Chang-Kyu LEE, Jinsol JEONG, Kwang-Hwan CHOI
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Publication number: 20250131153Abstract: The present invention relates to an information exchange method and device for digital twin federation. A method for transmitting and receiving information for digital twin federation by digital twin according to an embodiment of the present invention may comprise: transmitting a message related to the digital twin federation to a component of the digital twin federal; and receiving a response to the message. Herein, the component of the digital twin federation may correspond to one or more of another digital twin, a registry, or a communication adapter. The message may include a header area and a data area, and the data area may include object information related to at least one of the digital twin or the component of the digital twin federation and action information indicating an operation related to the digital twin federation.Type: ApplicationFiled: October 25, 2023Publication date: April 24, 2025Inventors: Hyun Jeong LEE, Chang Kyu LEE, Shin Gak KANG
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Patent number: 12272705Abstract: 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: GrantFiled: April 23, 2021Date of Patent: April 8, 2025Assignee: 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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Publication number: 20250051724Abstract: A medium composition for culturing porcine pluripotent stem cells is disclosed. The medium composition suitable for culturing porcine pluripotent stem cells can maintain the pluropotency and stemness of porcine pluripotent stem cells in vitro for an extended period of time and allows stem cells to be cultured in a feeder cell-free manner.Type: ApplicationFiled: March 14, 2023Publication date: February 13, 2025Applicant: SPACE F CORPORATIONInventors: Chang-Kyu LEE, Kwang-Hwan CHOI, Dong-Kyung LEE
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Publication number: 20250040282Abstract: An image sensor includes a substrate region having a photoelectric conversion region and a floating diffusion region therein. The floating diffusion region is configured to receive charges generated in the photoelectric conversion region in response to light incident the photoelectric conversion region. First and second horizontal conductive lines are provided that extend on the substrate region, but at different heights relative to a surface of the substrate region. The first horizontal conductive line is electrically connected to the floating diffusion region and has a thickness smaller than a thickness of the second horizontal conductive line. In addition, the first horizontal conductive line extends closer to the substrate region than the second horizontal conductive line.Type: ApplicationFiled: April 5, 2024Publication date: January 30, 2025Inventors: Jihun LIM, Sungki MIN, Chang Kyu LEE, Yongkun JO
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Publication number: 20250040279Abstract: An image sensor includes a pixel array in which pixels having photoelectric conversion elements are arranged in a matrix, color filters corresponding to the pixels and configured to selectively transmit light of at least two different wavelength bands, and microlenses on the color filters. At least some of the microlenses may have different shapes depending on respective wavelength bands that respective corresponding color filters at least partially overlapping with the at least some microlenses are configured to selectively transmit, such that the at least some microlenses are configured to compensate for chromatic aberration between the lights passing through the respective corresponding color filters.Type: ApplicationFiled: February 28, 2024Publication date: January 30, 2025Applicant: Samsung Electronics Co., Ltd.Inventors: Minkwan KIM, Jongwoo HONG, Jonghyun GO, Haneul KIM, Chang Kyu LEE, Keun Yeong CHO, Joonhyuk HWANG
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Publication number: 20250006770Abstract: A dual vertical transfer gate, a transistor including the same, and a CMOS image sensing device including the same. In some embodiments, a gate of the dual vertical transfer transistor may include a pair of poles, which are extended to an n-type region of a photodiode, and a connecting portion, which connects the paired poles to each other. A first insulating pattern may be provided between the poles and on the substrate.Type: ApplicationFiled: June 6, 2024Publication date: January 2, 2025Inventors: Jihun Lim, Jinyoung Kim, Myunghae Seo, Sungki Min, Chang Kyu Lee
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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
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Publication number: 20210102163Abstract: A medium composition for porcine pluripotent stem cells, containing bFGF, activin A, CHIR99021 and IWR-1 is disclosed. The composition is prepared from specific ingredients, excluding non-specific ingredients, thereby facilitating quality control, and thus is suitable for the study of porcine pluripotent stem cells. Also disclosed is a method for culturing, maintaining and preserving porcine pluripotent stem cells having the ability to form teratomas, by using the composition.Type: ApplicationFiled: December 17, 2020Publication date: April 8, 2021Applicant: SPACE F CORP.Inventors: Chang Kyu LEE, Kwang Hwan Choi, Dong Kyung Lee
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Publication number: 20200362748Abstract: 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: ApplicationFiled: August 13, 2018Publication date: November 19, 2020Inventors: Jae Young JEONG, Chang Kyu LEE