Patents by Inventor Yoon Hwan Cho

Yoon Hwan 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).

  • Patent number: 12205746
    Abstract: A coil component includes a body having one surface and the other surface, opposing each other, both lateral surfaces respectively connecting the one surface and the other surface and opposing each other, and both end surfaces respectively connecting the both lateral surfaces and opposing each other; a coil unit disposed in the body; a first external electrode and a second external electrode, respectively connected to the coil unit and disposed to be spaced apart from each other on the one surface of the body; and a first insulating layer covering the other surface of the body, the both lateral surfaces of the body, and the both end surfaces of the body.
    Type: Grant
    Filed: February 1, 2021
    Date of Patent: January 21, 2025
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Ju Hwan Yang, Seung Mo Lim, Tae Jun Choi, Byung Soo Kang, Yong Hui Li, Tai Yon Cho, No Il Park, Yoon Mi Cha, Boum Seock Kim, Seung Min Lee
  • Publication number: 20250018900
    Abstract: An integrated cleaning module of a vehicle sensor includes a washing liquid supply module configured to supply cleaning liquid; and an air supply module connected to the washing liquid supply module and configured to supply air. The air supply module includes a compressor configured to generate compressed air; an air tank in which the compressed air generated by the compressor is stored; and an integrated dispenser configured to be in fluid connection with the washing liquid supply module and the air tank. The integrated dispenser is configured to distribute the cleaning liquid and the compressed air.
    Type: Application
    Filed: November 27, 2023
    Publication date: January 16, 2025
    Applicants: HYUNDAI MOTOR COMPANY, KIA CORPORATION, HYUNDAM INDUSTRIAL CO., LTD., DONG HEE INDUSTRIAL CO., LTD.
    Inventors: Seong Cheol Cho, Yoon Geun Cho, Sung Won Lee, Je Yeon Kim, Chul Young Choi, Hyun Su Yoo, Kyun Bum Park, Kun Su Hwang, Bu Hyeon Cho, Chan Yo Jeon, Seung Hwan Lee
  • Patent number: 12100846
    Abstract: The present disclosure relates to a tube-shaped catalyst complex and a catalyst slurry including the same for a fuel cell. The catalyst complex for a fuel cell comprises a tubular inner layer including an ionomer and an outer layer provided on an outer surface of the inner layer and including a catalyst.
    Type: Grant
    Filed: June 8, 2022
    Date of Patent: September 24, 2024
    Assignees: HYUNDAI MOTOR COMPANY, KIA CORPORATION
    Inventors: Yoon Hwan Cho, Su Won Seol, Byeong Gab Ji
  • Publication number: 20240266550
    Abstract: Disclosed are an electrode including a porous substrate, a membrane-electrode assembly for a fuel cell including the same and a method of manufacturing the same. In the method of manufacturing the membrane-electrode assembly, the amount of a catalyst that is loaded depending on the position is applied in a gradational manner, thus efficiently using the catalyst, thereby reducing costs owing to the use of a decreased amount of the metal catalyst. Further, the membrane-electrode assembly includes the electrode including a porous substrate, thus making it easy to select hot-pressing conditions and increasing processing efficiency. The porous substrate is hydrophobic and the pore size in the electrode is not decreased compared to conventional electrodes, thus reducing flooding and generating various operation regions. The electrode including the porous substrate can minimize electrode loss, thus improving electrode durability.
    Type: Application
    Filed: March 27, 2024
    Publication date: August 8, 2024
    Inventors: Su Won Seol, Ji Hoon Yang, Yoon Hwan Cho
  • Patent number: 12002968
    Abstract: The present disclosure relates to a method of manufacturing catalyst slurry for fuel cells capable of greatly improving efficiency in use of catalyst metal and a method of manufacturing an electrode for fuel cells using the catalyst slurry manufactured using the method. Specifically, the method of manufacturing catalyst slurry for fuel cells includes preparing a catalyst including a porous carrier and catalyst metal, introducing the catalyst, a solvent, and an ionomer into a chamber, and infiltrating the ionomer into pores of the carrier.
    Type: Grant
    Filed: June 15, 2020
    Date of Patent: June 4, 2024
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Yoon Hwan Cho, Kook Il Han, Su Won Seol
  • Patent number: 11973230
    Abstract: Disclosed are an electrode including a porous substrate, a membrane-electrode assembly for a fuel cell including the same and a method of manufacturing the same. In the method of manufacturing the membrane-electrode assembly, the amount of a catalyst that is loaded depending on the position is applied in a gradational manner, thus efficiently using the catalyst, thereby reducing costs owing to the use of a decreased amount of the metal catalyst. Further, the membrane-electrode assembly includes the electrode including a porous substrate, thus making it easy to select hot-pressing conditions and increasing processing efficiency. The porous substrate is hydrophobic and the pore size in the electrode is not decreased compared to conventional electrodes, thus reducing flooding and generating various operation regions. The electrode including the porous substrate can minimize electrode loss, thus improving electrode durability.
    Type: Grant
    Filed: September 21, 2020
    Date of Patent: April 30, 2024
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Su Won Seol, Ji Hoon Yang, Yoon Hwan Cho
  • Publication number: 20240120501
    Abstract: 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: Application
    Filed: May 26, 2023
    Publication date: April 11, 2024
    Applicants: HYUNDAI MOTOR COMPANY, KIA CORPORATION
    Inventors: Ji Hoon Yang, Geon Hee Cho, Kook Il Han, Yoon Hwan Cho
  • Patent number: 11688871
    Abstract: Disclosed are an electrode for a membrane-electrode assembly, a method of manufacturing the same and a membrane-electrode assembly using the same. The electrode may include the pores and pore density around a catalyst contained in the electrode may be selectively increased using a thermally decomposable chemical blowing agent, thereby improving mass transfer through the catalyst.
    Type: Grant
    Filed: November 23, 2020
    Date of Patent: June 27, 2023
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Byeong Gab Ji, Su Won Seol, Dong Hwan Yoon, Kook Il Han, Yoon Hwan Cho
  • Patent number: 11539054
    Abstract: Disclose is a method of manufacturing catalyst ink for a fuel cell, and particularly the method includes removing eluted transition metal from a noble-metal/transition-metal alloy catalyst.
    Type: Grant
    Filed: November 30, 2020
    Date of Patent: December 27, 2022
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Dae Yong Son, Dong Hwan Yoon, Yoon Hwan Cho
  • Publication number: 20220393187
    Abstract: The present disclosure relates to a tube-shaped catalyst complex and a catalyst slurry including the same for a fuel cell. The catalyst complex for a fuel cell comprises a tubular inner layer including an ionomer and an outer layer provided on an outer surface of the inner layer and including a catalyst.
    Type: Application
    Filed: June 8, 2022
    Publication date: December 8, 2022
    Inventors: Yoon Hwan Cho, Su Won Seol, Byeong Gab Ji
  • Publication number: 20220384832
    Abstract: Disclosed is an electrode for a membrane-electrode assembly, in which a hydrophilic group and a hydrophobic portion of an ionomer are bonded to a catalyst so that the alignment of the hydrophilic group and the hydrophobic portion of the ionomer is controlled, and a method of manufacturing the same.
    Type: Application
    Filed: May 23, 2022
    Publication date: December 1, 2022
    Applicants: HYUNDAI MOTOR COMPANY, KIA CORPORATION
    Inventors: Su Won Seol, Yoon Hwan Cho, Ju Young Lee
  • Publication number: 20210336275
    Abstract: Disclosed are an electrode including a porous substrate, a membrane-electrode assembly for a fuel cell including the same and a method of manufacturing the same. In the method of manufacturing the membrane-electrode assembly, the amount of a catalyst that is loaded depending on the position is applied in a gradational manner, thus efficiently using the catalyst, thereby reducing costs owing to the use of a decreased amount of the metal catalyst. Further, the membrane-electrode assembly includes the electrode including a porous substrate, thus making it easy to select hot-pressing conditions and increasing processing efficiency. The porous substrate is hydrophobic and the pore size in the electrode is not decreased compared to conventional electrodes, thus reducing flooding and generating various operation regions. The electrode including the porous substrate can minimize electrode loss, thus improving electrode durability.
    Type: Application
    Filed: September 21, 2020
    Publication date: October 28, 2021
    Inventors: Su Won Seol, Ji Hoon Yang, Yoon Hwan Cho
  • Publication number: 20210313609
    Abstract: Disclosed are an electrode for a membrane-electrode assembly, a method of manufacturing the same and a membrane-electrode assembly using the same. The electrode may include the pores and pore density around a catalyst contained in the electrode may be selectively increased using a thermally decomposable chemical blowing agent, thereby improving mass transfer through the catalyst.
    Type: Application
    Filed: November 23, 2020
    Publication date: October 7, 2021
    Inventors: Byeong Gab Ji, Su Won Seol, Dong Hwan Yoon, Kook ll Han, Yoon Hwan Cho
  • Publication number: 20210288335
    Abstract: Disclose is a method of manufacturing catalyst ink for a fuel cell, and particularly the method includes removing eluted transition metal from a noble-metal/transition-metal alloy catalyst.
    Type: Application
    Filed: November 30, 2020
    Publication date: September 16, 2021
    Inventors: Dae Yong Son, Dong Hwan Yoon, Yoon Hwan Cho
  • Publication number: 20210175516
    Abstract: The present disclosure relates to a method of manufacturing catalyst slurry for fuel cells capable of greatly improving efficiency in use of catalyst metal and a method of manufacturing an electrode for fuel cells using the catalyst slurry manufactured using the method. Specifically, the method of manufacturing catalyst slurry for fuel cells includes preparing a catalyst including a porous carrier and catalyst metal, introducing the catalyst, a solvent, and an ionomer into a chamber, and infiltrating the ionomer into pores of the carrier.
    Type: Application
    Filed: June 15, 2020
    Publication date: June 10, 2021
    Inventors: Yoon Hwan Cho, Kook Il Han, Su Won Seol
  • Patent number: 10910660
    Abstract: Disclosed is a method of manufacturing a membrane-electrode assembly for fuel cells. The method includes (a) admixing a metal catalyst, an ionomer and a first dispersion solvent to prepare a first admixture, (b) heat treating the first admixture prepared in (a) to form an ionomer-fixed metal catalyst, and (c) immersing the ionomer-fixed metal catalyst formed in (b) in a solvent, wherein the solvent in (c) may include one or more selected from the group consisting of ethanol, propanol, and isopropyl alcohol. The membrane-electrode assembly for fuel cells manufactured by the method may have substantially improved durability.
    Type: Grant
    Filed: September 13, 2018
    Date of Patent: February 2, 2021
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Dae Yong Son, Yoon Hwan Cho, Jin Seong Choi, Yong Min Kim
  • Patent number: 10847808
    Abstract: A method for manufacturing a fuel cell electrode includes forming a first mixture by mixing a first cation exchange resin, a metal catalyst, and a first solvent, powderizing the first mixture to produce a first catalyst powder comprising the metal catalyst coated with the first cation exchange resin, forming a second mixture by mixing the first catalyst powder, a second cation exchange resin, and a second solvent, powderizing the second mixture to produce a catalyst powder having a core and two or more layers of shells and being coated with the second cation exchange resin, mixing the catalyst powder having the core and two or more layers of shells with a third solvent to produce a catalyst slurry, and coating, using the catalyst slurry, to produce an electrode.
    Type: Grant
    Filed: December 8, 2017
    Date of Patent: November 24, 2020
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Yoon Hwan Cho, Su Won Seol, Ji Hoon Yang, Young Taek Kim, Dae Yong Son
  • Patent number: 10439230
    Abstract: A method for manufacturing an electrode for a fuel cell includes a mixing step of producing a first mixed solution by mixing a carbon support, a metal catalyst, a binder and a first dispersion solvent, a drying step of producing a first mixed solution dried body by drying the first mixed solution, a heat treatment step of heating the first mixed solution dried body, a second mixed solution production step of producing a second mixed solution by dissolving the heat-treated first mixed solution dried body in a second dispersion solvent, and a release paper coating step of producing an electrode by coating the second mixed solution onto a release paper, and then drying the second mixed solution.
    Type: Grant
    Filed: July 17, 2017
    Date of Patent: October 8, 2019
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Dae-Yong Son, Yoon-Hwan Cho, Jin Seong Choi, Young-Taek Kim
  • Publication number: 20190207238
    Abstract: Disclosed is a method of manufacturing a membrane-electrode assembly for fuel cells. The method includes (a) admixing a metal catalyst, an ionomer and a first dispersion solvent to prepare a first admixture, (b) heat treating the first admixture prepared in (a) to form an ionomer-fixed metal catalyst, and (c) immersing the ionomer-fixed metal catalyst formed in (b) in a solvent, wherein the solvent in (c) may include one or more selected from the group consisting of ethanol, propanol, and isopropyl alcohol. The membrane-electrode assembly for fuel cells manufactured by the method may have substantially improved durability.
    Type: Application
    Filed: September 13, 2018
    Publication date: July 4, 2019
    Inventors: Dae Yong Son, Yoon Hwan Cho, Jin Seong Choi, Yong Min Kim
  • Publication number: 20190131630
    Abstract: The present invention relates to a method for manufacturing a polymer electrolyte electrode for fuel cells that can improve performance of the electrode for fuel cells and the capability to transfer substances into the electrode by sequentially bringing two kinds of cation exchange resins into contact with catalysts, powderizing the same and incorporating a catalyst having a multilayer structure including a core and two or more layers of shells into the electrode for fuel cells, and an electrode manufactured by the method.
    Type: Application
    Filed: December 8, 2017
    Publication date: May 2, 2019
    Inventors: Yoon Hwan Cho, Su Won Seol, Ji Hoon Yang, Young Taek Kim, Dae Yong Son