Patents by Inventor Yoon-Hee Cho
Yoon-Hee Cho 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: 20240120501Abstract: Disclosed are an electrode slurry for a fuel cell capable of forming a multilayer structure without an interface using a first support and a second support having different mesopore fractions and densities, a multilayer electrode structure using the same, and a manufacturing method thereof. The electrode slurry for a fuel cell includes a first catalyst including a first support on which a first metal is supported, a second catalyst including a second support on which a second metal is supported, an ionomer, and a solvent, the first support and the second support having different mesopore fractions and densities.Type: ApplicationFiled: May 26, 2023Publication date: April 11, 2024Applicants: HYUNDAI MOTOR COMPANY, KIA CORPORATIONInventors: Ji Hoon Yang, Geon Hee Cho, Kook Il Han, Yoon Hwan Cho
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Patent number: 11572376Abstract: The present invention relates to a novel ligand compound, a transition metal compound and a catalyst composition comprising the same. The novel ligand compound and the transition metal compound of the present invention may be useful as a catalyst of polymerization reaction for preparing an olefin-based polymer having a low density.Type: GrantFiled: February 26, 2021Date of Patent: February 7, 2023Inventors: Yoon Hee Cho, Jae Kwon Jang
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Patent number: 11495395Abstract: An inductor includes a body including a support member including a through-hole, an internal coil disposed on the support member, and an encapsulant encapsulating the support member and the internal coil; and an external electrode disposed on an external surface of the body and connected to the internal coil. The external electrode includes a conductive resin layer and a double conductive layer of a first conductive layer and a second conductive layer, disposed between the conductive resin layer and the internal coil.Type: GrantFiled: November 2, 2018Date of Patent: November 8, 2022Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: Sung Min Song, Hwan Soo Lee, Yoon Hee Cho, Yong Choon Park
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Publication number: 20220351883Abstract: A coil component includes a support member, an internal coil supported by the support member and including a plurality of coil patterns, and external electrodes connected to the internal coil and including a first layer in contact with the internal coil and a second layer disposed on the first layer. The second layer is a composite layer including a conductive material and a resin. The support member includes first and second surfaces facing the external electrodes, respectively, and one or more of at least a portion of the first surface and at least a portion of the second surface are configured as cut surfaces.Type: ApplicationFiled: July 18, 2022Publication date: November 3, 2022Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: Hwan Soo LEE, Yoon Hee CHO, Sung Min SONG
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Publication number: 20220275113Abstract: The present invention relates to a method for purifying a polyalkylaluminoxane-containing solution using a hydroxy group-containing compound, a method for producing a catalyst composition using the method, a catalyst composition produced by the production method, and a method for producing an olefin polymer using the catalyst composition.Type: ApplicationFiled: September 29, 2020Publication date: September 1, 2022Applicant: LG Chem, Ltd.Inventors: Yoon Hee Cho, Ue Ryung Seo, Seung Hyo Kim, Seung Hwan Jung, A Rim Kim, Ki Won Han, Hyo Jung Han
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Patent number: 11424058Abstract: A coil component includes a support member, an internal coil supported by the support member and including a plurality of coil patterns, and external electrodes connected to the internal coil and including a first layer in contact with the internal coil and a second layer disposed on the first layer. The second layer is a composite layer including a conductive material and a resin. The support member includes first and second surfaces facing the external electrodes, respectively, and one or more of at least a portion of the first surface and at least a portion of the second surface are configured as cut surfaces.Type: GrantFiled: July 10, 2018Date of Patent: August 23, 2022Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: Hwan Soo Lee, Yoon Hee Cho, Sung Min Song
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Patent number: 11225495Abstract: A transition metal compound represented by Chemical Formula 1 and a method for preparing the same, catalyst compositions including the same, and olefin-based polymers prepared from the same are disclosed herein. The transition metal catalyst has excellent structural stability together with excellent catalytic activity and can exhibit excellent copolymerizability even at a high temperature. In an embodiment, an olefin-based polymer prepared using a catalyst composition including the transition metal compound has a density of 0.91 g/cc or less.Type: GrantFiled: July 27, 2018Date of Patent: January 18, 2022Inventors: Young Shil Do, Jin Sam Gong, Eun Jung Lee, Choong Hoon Lee, Seung Hwan Jung, Yoon Hee Cho, Hyo Jung Han
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Patent number: 11056272Abstract: An inductor includes first and second external electrodes spaced apart from each other, a substrate disposed between the first and second external electrodes and having a first surface and a second surface opposing each other, and a conductive structure electrically connected to the first and second external electrodes. The conductive structure includes a first conductive pattern disposed on the first surface of the substrate, a second conductive pattern disposed on the second surface of the substrate, and at least one reinforcing portion. The first conductive pattern has a first side facing the first external electrode, the second conductive pattern has a second side facing the second external electrode, and the at least one reinforcing portion is electrically connected to at least one of the first and second sides and is interposed between the substrate and at least one of the first and second external electrodes.Type: GrantFiled: August 28, 2018Date of Patent: July 6, 2021Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: Sung Min Song, Yoon Hee Cho, Hwan Soo Lee
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Publication number: 20210179643Abstract: The present invention relates to a novel ligand compound, a transition metal compound and a catalyst composition comprising the same. The novel ligand compound and the transition metal compound of the present invention may be useful as a catalyst of polymerization reaction for preparing an olefin-based polymer having a low density.Type: ApplicationFiled: February 26, 2021Publication date: June 17, 2021Applicant: LG Chem, Ltd.Inventors: Yoon Hee Cho, Jae Kwon Jang
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Patent number: 11017926Abstract: A coil component includes a body including a coil including lead portions at both ends thereof and a magnetic material sealing the coil and external electrodes disposed on outer surfaces of the body and connected to the lead portions, respectively. An outer surface of the coil including at least one of an upper surface, a lower surface, and a side surface of the coil includes a surface area increasing portion.Type: GrantFiled: June 25, 2018Date of Patent: May 25, 2021Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: Hwan Soo Lee, Sung Min Song, Yoon Hee Cho
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Patent number: 10975110Abstract: The present invention relates to a novel ligand compound, a transition metal compound and a catalyst composition comprising the same. The novel ligand compound and the transition metal compound of the present invention may be useful as a catalyst of polymerization reaction for preparing an olefin-based polymer having a low density.Type: GrantFiled: September 20, 2018Date of Patent: April 13, 2021Inventors: Yoon Hee Cho, Jae Kwon Jang
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Publication number: 20210032274Abstract: A transition metal compound represented by Chemical Formula I and a method for preparing the same, catalyst compositions including the same, and olefin-based polymers prepared from the same are disclosed herein. The transition metal catalyst has excellent structural stability together with excellent catalytic activity and can exhibit excellent copolymerizability even at a high temperature. In an embodiment, an olefin-based polymer prepared using a catalyst composition including the transition metal compound has a density of 0.91 g/cc or less.Type: ApplicationFiled: July 27, 2018Publication date: February 4, 2021Applicant: LG Chem, Ltd.Inventors: Young Shil Do, Jin Sam Gong, Eun Jung Lee, Choong Hoon Lee, Seung Hwan Jung, Yoon Hee Cho, Hyo Jung Han
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Patent number: 10741320Abstract: A coil component includes: a coil part including a coil conductor; and a body formed adjacently to the coil part and including first and second magnetic powder particles having different average particle sizes, wherein an average particle size of the first magnetic powder particles is smaller than an interval between adjacent patterns of the coil conductor, and an average particle size of the second magnetic powder particles is greater than the interval between the adjacent patterns of the coil conductor.Type: GrantFiled: November 29, 2017Date of Patent: August 11, 2020Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: Hwan Soo Lee, Yoon Hee Cho, Sung Min Song
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Patent number: 10600550Abstract: A coil component includes a body having a volume of 2.4 mm3 or less and including at least one coil member embedded therein, and first and second external electrodes partially or entirely formed on first and second surfaces of the body opposing each other, respectively, wherein the product of inductance Ls (?H) and S/l (mm) is 0.45 (?H·mm) or more to 0.75 (?H·mm) or less in which S (mm2) is an area of regions of the first and second external electrodes disposed on the first and second surfaces of the body, and 1 (mm) is a minimum spaced distance between the first and second external electrodes formed on the first and second surfaces of the body.Type: GrantFiled: January 9, 2018Date of Patent: March 24, 2020Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: Hwan Soo Lee, Yoon Hee Cho, Sung Min Song
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Patent number: 10590215Abstract: The present disclosure provides a novel transition metal compound having excellent structural stability together with polymerization reactivity, and thereby is useful as a catalyst in preparing an olefin-based polymer, particularly, a high molecular weight and low density olefin-based polymer, and a catalyst composition including the same.Type: GrantFiled: April 18, 2019Date of Patent: March 17, 2020Assignee: LG CHEM, LTD.Inventors: Yoon Hee Cho, Jin Sam Gong, Jung Ho Jun, Choong Hoon Lee, Seung Hwan Jung
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Patent number: 10550204Abstract: The present disclosure provides a novel transition metal compound having excellent structural stability together with polymerization reactivity, and thereby is useful as a catalyst in preparing an olefin-based polymer, particularly, a low density olefin-based polymer, and a catalyst composition including the same.Type: GrantFiled: December 7, 2018Date of Patent: February 4, 2020Assignee: LG CHEM, LTD.Inventors: Yoon Hee Cho, Jung Ho Jun, Jin Sam Gong, Choong Hoon Lee, Seung Hwan Jung
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Publication number: 20190333688Abstract: An inductor includes a body including a support member including a through-hole, an internal coil disposed on the support member, and an encapsulant encapsulating the support member and the internal coil; and an external electrode disposed on an external surface of the body and connected to the internal coil. The external electrode includes a conductive resin layer and a double conductive layer of a first conductive layer and a second conductive layer, disposed between the conductive resin layer and the internal coil.Type: ApplicationFiled: November 2, 2018Publication date: October 31, 2019Inventors: Sung Min SONG, Hwan Soo LEE, Yoon Hee CHO, Yong Choon PARK
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Publication number: 20190263844Abstract: The present invention relates to a novel ligand compound, a transition metal compound and a catalyst composition comprising the same. The novel ligand compound and the transition metal compound of the present invention may be useful as a catalyst of polymerization reaction for preparing an olefin-based polymer having a low density.Type: ApplicationFiled: September 20, 2018Publication date: August 29, 2019Applicant: LG Chem, Ltd.Inventors: Yoon Hee Cho, Jae Kwon Jang
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Publication number: 20190244742Abstract: An inductor includes first and second external electrodes spaced apart from each other, a substrate disposed between the first and second external electrodes and having a first surface and a second surface opposing each other, and a conductive structure electrically connected to the first and second external electrodes. The conductive structure includes a first conductive pattern disposed on the first surface of the substrate, a second conductive pattern disposed on the second surface of the substrate, and at least one reinforcing portion. The first conductive pattern has a first side facing the first external electrode, the second conductive pattern has a second side facing the second external electrode, and the at least one reinforcing portion is electrically connected to at least one of the first and second sides and is interposed between the substrate and at least one of the first and second external electrodes.Type: ApplicationFiled: August 28, 2018Publication date: August 8, 2019Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: Sung Min SONG, Yoon Hee CHO, Hwan Soo LEE
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Publication number: 20190241688Abstract: The present disclosure provides a novel transition metal compound having excellent structural stability together with polymerization reactivity, and thereby is useful as a catalyst in preparing an olefin-based polymer, particularly, a high molecular weight and low density olefin-based polymer, and a catalyst composition including the same.Type: ApplicationFiled: April 18, 2019Publication date: August 8, 2019Applicant: LG CHEM, LTD.Inventors: Yoon Hee CHO, Jin Sam GONG, Jung Ho JUN, Choong Hoon LEE, Seung Hwan JUNG