Patents by Inventor Ji-hwan Choi
Ji-hwan Choi 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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LITHIUM COMPOSITE OXIDE AND POSITIVE ELECTRODE ACTIVE MATERIAL FOR SECONDARY BATTERY CONTAINING SAME
Publication number: 20240136510Abstract: A positive electrode active material including a first lithium composite oxide particle including a secondary particle formed by aggregation of one or more primary particles, and a coating oxide occupying at least a part of at least one of surfaces of the secondary particle, grain boundaries between the primary particles, or surfaces of the primary particles, the positive electrode active material satisfying an equation of 1.3?a/b?3.0, wherein a represents a max peak intensity at 2theta=44.75° to 44.80° and b represents a max peak intensity at 2theta=45.3° to 45.6° in X-ray diffraction (XRD) analysis using Cu K? radiation.Type: ApplicationFiled: May 21, 2023Publication date: April 25, 2024Inventors: Yu Gyeong CHUN, Moon Ho CHOI, Yoon Young CHOI, Jong Seung SHIN, Yong Hwan GWON, Jin Ho BAE, Ji Won KIM, Sang Hyeok KIM -
Publication number: 20240136496Abstract: An electrode sheet drying equipment, an electrode sheet manufacturing system including the same, and an electrode sheet drying method including an air-floating roller disposed downstream of a drying oven, and the air-floating roller is configured to spray hot air through multiple air spraying holes formed on the outer circumferential surface. Accordingly, the electrode sheet discharged from the drying oven in a partially undried state can be additionally dried, thereby preventing contamination of a transfer roller and/or equipment of the subsequent process.Type: ApplicationFiled: December 19, 2022Publication date: April 25, 2024Applicant: LG Energy Solution, Ltd.Inventors: Soon Sik Choi, Oh Cheol Kwon, Ji Hwan Kim
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Publication number: 20240122070Abstract: The present invention relates to a novel polycyclic compound employed in an organic layer of an organoelectro luminescent device, wherein the organoelectro luminescent device employing the compound according to the present invention has remarkably improved luminous efficiency and a long lifespan. According to the present invention, it is possible to implement a highly efficient and long-life organoelectro luminescent device that can be effectively applied to various display devices.Type: ApplicationFiled: October 12, 2020Publication date: April 11, 2024Applicant: SFC CO., LTDInventors: Bong-ki SHIN, Sung-hoon JOO, Byung-sun YANG, Ji-hwan KIM, Hyeon-jun JO, Sung-eun CHOI
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Publication number: 20240118028Abstract: An infrared heat source module is configured to minimize problems such as wrinkles or cracks in electrodes even if the patterns of a coated part and an uncoated part of the electrodes present in a current collector vary. The module improves a drying efficiency of the coated part of the current collector. An electrode using the infrared heat source module is manufactured by a process.Type: ApplicationFiled: January 27, 2022Publication date: April 11, 2024Applicant: LG Energy Solution, Ltd.Inventors: Soon Sik Choi, Young Kuk Ko, Oh Cheol Kwon, Ji Hwan Kim, Jeong Won Lee
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Patent number: 11945744Abstract: Disclosed are a method and apparatus for reusing wastewater. The method for reusing wastewater disclosed herein includes: generating a mixed wastewater by mixing multiple types of wastewater (S20); performing a first purification by passing the mixed wastewater through a flocculation-sedimentation unit (S40); performing a second purification by passing an effluent of the flocculation-sedimentation unit through a membrane bioreactor (MBR) (S60); performing a third purification by passing an effluent of the MBR through a reverse-osmosis membrane unit (S80); and reusing an effluent of the reverse-osmosis membrane unit as cooling water or industrial water (S100).Type: GrantFiled: April 14, 2023Date of Patent: April 2, 2024Assignees: SAMSUNG ENGINEERING CO., LTD., SAMSUNG ELECTRONICS CO., LTDInventors: Seok Hwan Hong, Dae Soo Park, Seung Joon Chung, Yong Xun Jin, Jae Hyung Park, Jae Hoon Choi, Jae Dong Hwang, Jong Keun Yi, Su Hyoung Cho, Kyu Won Hwang, June Yurl Hur, Je Hun Kim, Ji Won Chun
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Patent number: 11923216Abstract: An apparatus and method for treating a substrate are provided. The apparatus includes at least one first process chamber configured to supply a developer onto the substrate; at least one second process chamber configured to treat the substrate using a supercritical fluid; a transfer chamber configured to transfer the substrate from the at least one first process chamber to the at least one second process chamber, while the developer supplied in the at least one first process chamber remains on the substrate; and a temperature and humidity control system configured to manage temperature and humidity of the transfer chamber by supplying a first gas of constant temperature and humidity into the transfer chamber.Type: GrantFiled: August 22, 2022Date of Patent: March 5, 2024Assignees: SAMSUNG ELECTRONICS CO., LTD., SEMES CO., LTD.Inventors: Seung Min Shin, Sang Jin Park, Hae Won Choi, Jang Jin Lee, Ji Hwan Park, Kun Tack Lee, Koriakin Anton, Joon Ho Won, Jin Yeong Sung, Pil Kyun Heo
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Publication number: 20240068091Abstract: Disclosed is a method of forming an area-selective thin film, the method comprising supplying a nuclear growth retardant to the inside of the chamber in which the substrate is placed, so that the nuclear growth retardant is adsorbed to a non-growth region of the substrate; purging the interior of the chamber; supplying a precursor to the inside of the chamber, so that the precursor is adsorbed to a growth region of the substrate; purging the interior of the chamber; and supplying a reaction material to the inside of the chamber, so that the reaction material reacts with the adsorbed precursor to form the thin film.Type: ApplicationFiled: January 5, 2022Publication date: February 29, 2024Applicant: EGTM Co., Ltd.Inventors: Jae Min KIM, Ha Na KIM, Woong Jin CHOI, Ji Yeon HAN, Ju Hwan JEONG, Hyeon Sik CHO
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Publication number: 20240072236Abstract: An electrode manufacturing apparatus includes a supply part to supply an electrode precursor, a drying part to dry the electrode slurry, an air supply part to supply high-temperature vapor, an air introducing part to introduce the supplied high-temperature vapor, a flow path connected from the air introducing part to the air supply part, a sensor to measure humidity, an air discharge part, and a humidifying part to humidify the high-temperature vapor. The apparatus further includes a discharge part to discharge the manufactured electrode, a monitoring part, and a control part to collect monitoring information and information on the humidity to control whether to open or close the air discharge part and a degree of humidification by the humidifying part. An electrode manufacturing method using the apparatus thereof.Type: ApplicationFiled: November 17, 2022Publication date: February 29, 2024Applicant: LG Energy Solution, Ltd.Inventors: Ji Hwan Kim, Oh Cheol Kwon, Soon Sik Choi, Jeongwon Lee
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Patent number: 11912120Abstract: A battery mounting structure for a vehicle is provided to include a case having a first internal member that is disposed to be spaced parallel to an upper side of a lower panel of the case and a second internal member that is disposed perpendicular to the first internal member, and configured to accommodate a plurality of battery modules therein using the first internal member and the second internal member. An outer side member is provided in a shape protruding toward the outside on an outer side of the case. The battery modules are disposed in a stacking direction of battery cells that is parallel to a longitudinal direction of the first internal member.Type: GrantFiled: September 22, 2020Date of Patent: February 27, 2024Assignees: Hyundai Motor Company, Kia Motors CorporationInventors: Yong Hwan Choi, Yu Ri Oh, Tae Hyuck Kim, Gyung Hoon Shin, Hae Kyu Lim, Ji Woong Jung
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Publication number: 20240006589Abstract: A secondary battery comprising a positive electrode current collector, a first positive electrode mixture layer disposed on the positive electrode current collector and including a first positive electrode active material and a binder, and a second positive electrode mixture layer disposed on the first positive electrode mixture layer and including a second positive electrode active material and a binder. A nickel content of the second positive electrode active material is 80% by weight or less of a nickel content of the first positive electrode active material. By providing a secondary battery including a positive electrode of a multi-layer structure that includes positive electrode active materials having different contents of nickel, a secondary battery capable of improving high-temperature characteristics while maintaining energy density may be provided.Type: ApplicationFiled: September 18, 2023Publication date: January 4, 2024Inventors: Jae Yun MIN, Jeong A. KIM, Sung Jun PARK, Da Bin CHUNG, Jae Kyu JIN, Ji Hwan CHOI
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Publication number: 20230183432Abstract: The present disclosure relates to a polymer composite. According to the present disclosure, there is provided a polymer composite capable of exhibiting improved light resistance while being environmentally friendly by containing microcellulose fibers fibrillated by the growth of inorganic particles as a reinforcing material.Type: ApplicationFiled: March 7, 2022Publication date: June 15, 2023Applicant: LG Chem, Ltd.Inventors: Yulliana Kim, In Young Kim, Kwang Seoung Jeon, Minsung Park, Ji Hwan Choi
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Patent number: 11579765Abstract: Provided is an olfactory data sharing terminal including a receiver configured to receive olfactory data obtained by sensing an odor of an object through an olfactory sensor; a preference determiner configured to determine whether a user prefers the received olfactory data, based on a user olfactory function fuser(x); and a display displaying a user preference for the received olfactory data.Type: GrantFiled: January 7, 2020Date of Patent: February 14, 2023Assignee: DAEGU GYEONGBUK INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Jae Eun Jang, Hyuk Jun Kwon, Che Il Moon, Kyung In Jang, Ji Hwan Choi, Han Kyoung Choe, Su Jin Heo
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Publication number: 20200395603Abstract: A secondary battery comprising a positive electrode current collector, a first positive electrode mixture layer disposed on the positive electrode current collector and including a first positive electrode active material and a binder, and a second positive electrode mixture layer disposed on the first positive electrode mixture layer and including a second positive electrode active material and a binder. A nickel content of the second positive electrode active material is 80% by weight or less of a nickel content of the first positive electrode active material. By providing a secondary battery including a positive electrode of a multi-layer structure that includes positive electrode active materials having different contents of nickel, a secondary battery capable of improving high-temperature characteristics while maintaining energy density may be provided.Type: ApplicationFiled: April 7, 2020Publication date: December 17, 2020Inventors: Jae Yun MIN, Jeong A KIM, Sung Jun PARK, Da Bin CHUNG, Jae Kyu JIN, Ji Hwan CHOI
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Patent number: 10858047Abstract: Disclosed are a partition panel for vehicles and a method of manufacturing the same. The method includes mounting a first prepreg formed to have a shape corresponding to a molding groove on a lower die provided with the molding groove. The molding groove is inclined upwards from the center of a lower portion of the lower die to opposite ends of the lower die. A second prepreg having a sheet type is mounted on the lower die so as to cover the first prepreg. The first prepreg and the second prepreg are integrally molded by placing an upper die on the lower die.Type: GrantFiled: January 15, 2019Date of Patent: December 8, 2020Assignees: Hyundai Motor Company, Kia Motors Corporation, Hanwha Solutions CorporationInventors: Min Soo Kim, Wook Hyun Han, Chang Dong Kim, Jun Hyoung Kim, Jun Young Kim, Sang Sun Park, Joung Myung Lim, Ji Hwan Choi, Hee Young Ko
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Publication number: 20200218415Abstract: Provided is an olfactory data sharing terminal including a receiver configured to receive olfactory data obtained by sensing an odor of an object through an olfactory sensor; a preference determiner configured to determine whether a user prefers the received olfactory data, based on a user olfactory function fuser(x); and a display displaying a user preference for the received olfactory data.Type: ApplicationFiled: January 7, 2020Publication date: July 9, 2020Applicant: Daegu Gyeongbuk Institute of Science and TechnologyInventors: Jae Eun JANG, Hyuk Jun KWON, Che II MOON, Kyung In JANG, Ji Hwan CHOI, Han Kyoung CHOE, Su Jin HEO
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Patent number: 10428096Abstract: Provided are a novel polyketone polymerization catalyst and a method of preparing a ligand, which can reduce production costs and can enable commercial mass synthesis by using ((2,2-dimethyl-1,3-dioxane-5,5-diyl)bis(methylene))bis(bis(2-methoxyphenyl)phosphine) as a ligand constituting the polykeytone polymerization catalyst, the ligand having a simple structure and a small molecular weight while having high activity.Type: GrantFiled: July 16, 2014Date of Patent: October 1, 2019Assignees: HYOSUNG CHEMICAL CORPORATION, ST PHARM CO., LTD.Inventors: Jae Yoon Shim, Sun Kue Kim, Hae Souk Cho, Ji Hwan Choi, Geun Jho Lim, Sun Ki Chang, Min Kyu Kim, In Hyeok Baek
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Publication number: 20190144045Abstract: Disclosed are a partition panel for vehicles and a method of manufacturing the same. The method includes mounting a first prepreg formed to have a shape corresponding to a molding groove on a lower die provided with the molding groove. The molding groove is inclined upwards from the center of a lower portion of the lower die to opposite ends of the lower die. A second prepreg having a sheet type is mounted on the lower die so as to cover the first prepreg. The first prepreg and the second prepreg are integrally molded by placing an upper die on the lower die.Type: ApplicationFiled: January 15, 2019Publication date: May 16, 2019Inventors: Min Soo KIM, Wook Hyun HAN, Chang Dong KIM, Jun Hyoung KIM, Jun Young KIM, Sang Sun PARK, Joung Myung LIM, Ji Hwan CHOI, Hee Young KO
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Patent number: 10214245Abstract: Disclosed are a partition panel for vehicles and a method of manufacturing the same. The partition panel for vehicles includes a panel part formed of a composite material to divide a trunk and the inside of a vehicle from each other and a reinforcement part formed of a composite material, inclined upwards from the center of the lower portion of the panel part to both ends of the panel part, and connected integrally to the panel part.Type: GrantFiled: December 6, 2016Date of Patent: February 26, 2019Assignees: Hyundai Motor Company, Hanwha Advanced Materials CorporationInventors: Min Soo Kim, Wook Hyun Han, Chang Dong Kim, Jun Hyoung Kim, Jun Young Kim, Sang Sun Park, Joung Myung Lim, Ji Hwan Choi, Hee Young Ko
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Publication number: 20180111647Abstract: Disclosed are a partition panel for vehicles and a method of manufacturing the same. The partition panel for vehicles includes a panel part formed of a composite material to divide a trunk and the inside of a vehicle from each other and a reinforcement part formed of a composite material, inclined upwards from the center of the lower portion of the panel part to both ends of the panel part, and connected integrally to the panel part.Type: ApplicationFiled: December 6, 2016Publication date: April 26, 2018Inventors: Min Soo Kim, Wook Hyun Han, Chang Dong Kim, Jun Hyoung Kim, Jun Young Kim, Sang Sun Park, Joung Myung Lim, Ji Hwan Choi, Hee Young Ko
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Patent number: 9630579Abstract: A bumper back-beam for a vehicle is provided. The bumper back beam includes a glass fiber mat reinforced plastic composite and a carbon fiber reinforced plastic composite disposed within the glass fiber reinforced plastic composite. The glass fiber mat reinforced plastic composite includes polypropylene at about 45 to 60 wt. %, glass fiber at about 35 to 45 wt. %, a crosslink agent at about 0.1 to 10 wt. %, peroxide at 0.1 to 4 wt. %, and an antioxidant at about 0.1 to 4 wt. %. The carbon fiber reinforced plastic composite includes a thermoplastic resin at about 40 to 60 wt. % and a carbon reinforced fiber at about 40 to 60 wt. % arranged in a predetermined direction.Type: GrantFiled: June 9, 2015Date of Patent: April 25, 2017Assignees: Hyundai Motor Company, Hanwha Advanced Materials CorporationInventors: Sang Sun Park, Sung Ki Shin, Kieyoun Jeong, Seok Hwan Kim, Do Wan Lim, Joung Myung Lim, Ji Hwan Choi