Patents by Inventor Jin Pyo HWANG

Jin Pyo HWANG 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: 20230391968
    Abstract: The present inventive concept relates to a chemically modified anion exchange membrane and a method of preparing the same and, more particularly, an anion exchange membrane in which sulfonic acid groups in a perfluorinated sulfonic acid electrolyte membrane are substituted with anion conductive groups such as an ammonium group, a phosphonium group, an imidazolium group, a pyridinium group and a sulfonium group, and a method of preparing an anion exchange membrane by chemically modifying sulfonic acid groups in a perfluorinated sulfonic acid electrolyte membrane.
    Type: Application
    Filed: August 18, 2023
    Publication date: December 7, 2023
    Inventors: Chang Hyun LEE, Jin Pyo HWANG
  • Patent number: 11773228
    Abstract: The present invention relates to a chemically modified anion exchange membrane and a method of preparing the same and, more particularly, an anion exchange membrane in which sulfonic acid groups in a perfluorinated sulfonic acid electrolyte membrane are substituted with anion conductive groups such as ammonium group, phosphonium group, imidazolium group, pyridinium group and sulfonium group, and a method of preparing an anion exchange membrane by chemically modifying sulfonic acid groups in a perfluorinated sulfonic acid electrolyte membrane.
    Type: Grant
    Filed: April 20, 2022
    Date of Patent: October 3, 2023
    Inventors: Chang Hyun Lee, Jin Pyo Hwang
  • Publication number: 20220251316
    Abstract: The present invention relates to a chemically modified anion exchange membrane and a method of preparing the same and, more particularly, an anion exchange membrane in which sulfonic acid groups in a perfluorinated sulfonic acid electrolyte membrane are substituted with anion conductive groups such as ammonium group, phosphonium group, imidazolium group, pyridinium group and sulfonium group, and a method of preparing an anion exchange membrane by chemically modifying sulfonic acid groups in a perfluorinated sulfonic acid electrolyte membrane.
    Type: Application
    Filed: April 20, 2022
    Publication date: August 11, 2022
    Inventors: Chang Hyun LEE, Jin Pyo HWANG
  • Patent number: 11339257
    Abstract: The present inventive concept relates to a chemically modified anion exchange membrane and a method of preparing the same and, more particularly, an anion exchange membrane in which sulfonic acid groups in a perfluorinated sulfonic acid electrolyte membrane are substituted with anion conductive groups such as ammonium group, phosphonium group, imidazolium group, pyridinium group and sulfonium group, and a method of preparing an anion exchange membrane by chemically modifying sulfonic acid groups in a perfluorinated sulfonic acid electrolyte membrane.
    Type: Grant
    Filed: April 19, 2018
    Date of Patent: May 24, 2022
    Inventors: Chang Hyun Lee, Jin Pyo Hwang
  • Patent number: 11053365
    Abstract: The present inventive concept relates to a method of preparing an ion-exchange membrane using a chemical modification and an ion-exchange membrane prepared thereby. More specifically, the present inventive concept relates to a method of preparing an ion-exchange membrane, which is characterized by modifying sulfonic acid groups of a perfluorinated sulfonic acid electrolyte membrane with carboxyl groups and includes chlorinating sulfonic acid groups of a perfluorinated sulfonic acid electrolyte membrane; nitrilating the chlorinated electrolyte membrane; and hydrolyzing the nitrilated electrolyte membrane, and an ion-exchange membrane chemically modified thereby.
    Type: Grant
    Filed: April 19, 2018
    Date of Patent: July 6, 2021
    Inventors: Chang Hyun Lee, Chang Hoon Oh, Jin Pyo Hwang
  • Publication number: 20200122093
    Abstract: The present inventive concept relates to a method of preparing an ion-exchange membrane using a chemical modification and an ion-exchange membrane prepared thereby. More specifically, the present inventive concept relates to a method of preparing an ion-exchange membrane, which is characterized by modifying sulfonic acid groups of a perfluorinated sulfonic acid electrolyte membrane with carboxyl groups and includes chlorinating sulfonic acid groups of a perfluorinated sulfonic acid electrolyte membrane; nitrilating the chlorinated electrolyte membrane; and hydrolyzing the nitrilated electrolyte membrane, and an ion-exchange membrane chemically modified thereby.
    Type: Application
    Filed: April 19, 2018
    Publication date: April 23, 2020
    Inventors: Chang Hyun LEE, Chang Hoon OH, Jin Pyo HWANG
  • Publication number: 20200040151
    Abstract: The present inventive concept relates to a chemically modified anion exchange membrane and a method of preparing the same and, more particularly, an anion exchange membrane in which sulfonic acid groups in a perfluorinated sulfonic acid electrolyte membrane are substituted with anion conductive groups such as ammonium group, phosphonium group, imidazolium group, pyridinium group and sulfonium group, and a method of preparing an anion exchange membrane by chemically modifying sulfonic acid groups in a perfluorinated sulfonic acid electrolyte membrane.
    Type: Application
    Filed: April 19, 2018
    Publication date: February 6, 2020
    Inventors: Chang Hyun LEE, Jin Pyo HWANG