Patents by Inventor Sung Hyun Yun

Sung Hyun Yun 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).

  • Publication number: 20250132365
    Abstract: The present disclosure relates to a reinforced composite membrane for a fuel cell, comprising a porous support and a hydrogen ion-conductive polymer; a manufacturing method therefor; and a membrane-electrode assembly comprising same, the reinforced composite membrane having the hydrogen ion-conductive polymer impregnated into the porous support, or comprising, on at least one surface of the porous support, an electrolyte layer comprising the hydrogen ion-conductive polymer, wherein the porous support further comprises a compound capable of trapping metal ions.
    Type: Application
    Filed: November 24, 2022
    Publication date: April 24, 2025
    Inventors: Jung Hwa PARK, Dong Hoon LEE, Kum Suck SONG, Sung Hyun YUN, Seung Jib YUM, Chang Hoon OH, Hye Song LEE, Eun Su LEE
  • Publication number: 20250055006
    Abstract: A reinforced composite membrane with improved ion conductivity and wettability is provided. Provided in one embodiment of the present disclosure is a reinforced composite membrane comprising a porous support and an ionomer layer, which comprises an ion conductor filling the pores inside the porous support, wherein the porous support comprises a first surface and a second surface opposite to the first surface, and the first surface is reformed to contain a first hydrophilic functional group.
    Type: Application
    Filed: November 23, 2022
    Publication date: February 13, 2025
    Inventors: Jung Hwa PARK, Dong Hoon LEE, Kum Suck SONG, Sung Hyun YUN, Seung Jib YUM, Chang Hoon OH, Hye Song LEE, Eun Su LEE
  • Publication number: 20250015328
    Abstract: The present disclosure relates to a polymer electrolyte membrane including an ion conductor wherein the polymer electrolyte membrane contains an antioxidant-releasing material.
    Type: Application
    Filed: November 16, 2022
    Publication date: January 9, 2025
    Inventors: Jung Hwa PARK, Donghoon LEE, Kum Suck SONG, Sung Hyun YUN, Seung Jib YUM, Chang Hoon OH, Hye Song LEE, Eun Su LEE
  • Patent number: 11913773
    Abstract: The present invention relates to a method of non-destructively measuring a thickness of a reinforcement membrane, and more particularly, to a method of non-destructively measuring a thickness of a hydrogen ion exchange reinforcement membrane for a fuel cell, in which the reinforcement membrane has a symmetric three-layer structure including a reinforcement base layer and pure water layers disposed at opposing sides of the reinforcement base layer, including performing total non-destructive inspection and omitting a process of analyzing a position by means of a thickness peak of a power spectrum of the respective layers of the reinforcement membrane.
    Type: Grant
    Filed: May 20, 2019
    Date of Patent: February 27, 2024
    Assignee: LG CHEM, LTD.
    Inventors: Sung-Hyun Yun, Joo-Yong Park, Ji-Hun Kim, Jae-Choon Yang
  • Patent number: 11866279
    Abstract: The present invention relates to a film wrinkle removing roller in which pattern rolls coated with rubber are positioned at both ends of a cylindrical roll made of Teflon, and a porous film comes into contact with the roll and the pattern rolls, such that the film may be prevented from wrinkling and a surface of the film may be prevented from being abraded due to friction between the film and surfaces of the rolls.
    Type: Grant
    Filed: May 2, 2019
    Date of Patent: January 9, 2024
    Assignee: LG CHEM, LTD.
    Inventors: Sung Hyun Yun, Ji Hun Kim, Joo Yong Park, Jae Choon Yang
  • Patent number: 11489173
    Abstract: The present invention relates to a fuel cell and a fuel cell stack comprising the same, and according to one aspect of the present invention, there is provided a fuel cell comprising a membrane-electrode assembly having a first surface and a second surface opposite to the first surface, wherein an anode electrode and a cathode electrode are each disposed on the first surface; an end plate disposed apart at a predetermined interval on the second surface; a first gas diffusion layer disposed on the anode electrode; a second gas diffusion layer disposed on the cathode electrode; a first separating plate disposed on the first gas diffusion layer and having a plurality of flow channels; and a second separating plate disposed on the second gas diffusion layer and having a plurality of flow channels.
    Type: Grant
    Filed: January 31, 2019
    Date of Patent: November 1, 2022
    Assignee: LG CHEM, LTD.
    Inventors: Sung Hyun Yun, Joo Yong Park, Do Young Kim, Woon Jo Kim, Kyung Mun Kang, Jae Choon Yang
  • Publication number: 20210207946
    Abstract: The present invention relates to a method of non-destructively measuring a thickness of a reinforcement membrane, and more particularly, to a method of non-destructively measuring a thickness of a hydrogen ion exchange reinforcement membrane for a fuel cell, in which the reinforcement membrane has a symmetric three-layer structure including a reinforcement base layer and pure water layers disposed at opposing sides of the reinforcement base layer, including performing total non-destructive inspection and omitting a process of analyzing a position by means of a thickness peak of a power spectrum of the respective layers of the reinforcement membrane.
    Type: Application
    Filed: May 20, 2019
    Publication date: July 8, 2021
    Applicant: LG CHEM, LTD.
    Inventors: Sung-Hyun YUN, Joo-Yong PARK, Ji-Hun KIM, Jae-Choon YANG
  • Publication number: 20210198071
    Abstract: The present invention relates to a film wrinkle removing roller in which pattern rolls coated with rubber are positioned at both ends of a cylindrical roll made of Teflon, and a porous film comes into contact with the roll and the pattern rolls, such that the film may be prevented from wrinkling and a surface of the film may be prevented from being abraded due to friction between the film and surfaces of the rolls.
    Type: Application
    Filed: May 2, 2019
    Publication date: July 1, 2021
    Applicant: LG CHEM, LTD.
    Inventors: Sung Hyun YUN, Ji Hun KIM, Joo Yong PARK, Jae Choon YANG
  • Publication number: 20210083302
    Abstract: The present invention relates to a fuel cell and a fuel cell stack comprising the same, and according to one aspect of the present invention, there is provided a fuel cell comprising a membrane-electrode assembly having a first surface and a second surface opposite to the first surface, wherein an anode electrode and a cathode electrode are each disposed on the first surface; an end plate disposed apart at a predetermined interval on the second surface; a first gas diffusion layer disposed on the anode electrode; a second gas diffusion layer disposed on the cathode electrode; a first separating plate disposed on the first gas diffusion layer and having a plurality of flow channels; and a second separating plate disposed on the second gas diffusion layer and having a plurality of flow channels.
    Type: Application
    Filed: January 31, 2019
    Publication date: March 18, 2021
    Inventors: Sung Hyun YUN, Joo Yong PARK, Do Young KIM, Woon Jo KIM, Kyung Mun KANG, Jae Choon YANG
  • Publication number: 20160200055
    Abstract: The present disclosure relates to a technique for improving the ionic conductivity by introducing an electric field concept to a process for preparing an ion exchange membrane and deflecting ion channels within an ion exchange membrane in one direction, and specifically to a device for continuously preparing an ion exchange membrane with deflected ion channels in a roll-to-roll manner which can improve the ionic conductivity of the ion exchange membrane by reducing a traveling distance of the ions of the deflected ion channels.
    Type: Application
    Filed: January 14, 2016
    Publication date: July 14, 2016
    Inventors: Seung-Hyeon MOON, Ju-Young LEE, Ju-Hyuk LEE, Sung-Hyun YUN
  • Patent number: 7428484
    Abstract: Provided are an apparatus and method for modeling and analyzing a network simulation for a salable simulation framework (SSF)-based network simulation package. A system logic set is generated and a network simulation modeling suitable for a predetermined network application is formed according to the system logic set. The network simulation modeling is transmitted to a predetermined network simulation package that performs simulation. Statistical information is generated based on the result according to the system logic set. Complicated network simulation modeling errors can be minimized, and remodeling of the network simulation modeling can be reduced.
    Type: Grant
    Filed: February 4, 2005
    Date of Patent: September 23, 2008
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Sung Hyun Yun, Moon Kyun Oh, Kyung Jun Park, Yong Mun Park, No Ik Park
  • Patent number: 7349354
    Abstract: The present invention may relate to the following steps. Converting a bundle of data from a first format of a first mobile switching center to a second format of a switch. Routing, at the switch, the bundle data in the second format. Converting the bundle of data from the second format to a third format of the second mobile switching center. The first format and the third format are different formats. Mobile switching centers manage and operate base stations. The first mobile switching center and the second mobile switching center may be owned and operated by different companies. Accordingly, the first and second mobile switching centers will operate using different formats (or protocols). This is made possible by converting data between formats so it can be routed at a switch. This provides a particular advantage. A cell phone can now transparently change between base stations that are owned and operated by different companies.
    Type: Grant
    Filed: November 20, 2002
    Date of Patent: March 25, 2008
    Assignee: LG Electronics Inc.
    Inventor: Sung Hyun Yun
  • Publication number: 20030119509
    Abstract: The present invention may relate to the following steps. Converting a bundle of data from a first format of a first mobile switching center to a second format of a switch. Routing, at the switch, the bundle data in the second format. Converting the bundle of data from the second format to a third format of the second mobile switching center. The first format and the third format are different formats. Mobile switching centers manage and operate base stations. The first mobile switching center and the second mobile switching center may be owned and operated by different companies. Accordingly, the first and second mobile switching centers will operate using different formats (or protocols). This is made possible by converting data between formats so it can be routed at a switch. This provides a particular advantage. A cell phone can now transparently change between base stations that are owned and operated by different companies.
    Type: Application
    Filed: November 20, 2002
    Publication date: June 26, 2003
    Applicant: LG Electronics Inc.
    Inventor: Sung Hyun Yun