Patents by Inventor Shusuke Shirai

Shusuke Shirai 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).

  • Multilayer electrolyte membrane, membrane electrode assembly, water electrolysis-type hydrogen generator and method of producing multilayer electrolyte membrane
    Patent number: 11973252
    Abstract: A laminated electrolyte membrane including a first layer including a hydrocarbon polymer electrolyte as a major component, and a second layer including a fluoropolymer electrolyte and polyvinylidene fluoride as major components laminated on at least one side of the first layer, wherein the first layer and the second layer are laminated via a region in which components constituting both layers are mixed in a mixed region.
    Type: Grant
    Filed: March 19, 2020
    Date of Patent: April 30, 2024
    Assignee: Toray Industries, Inc.
    Inventors: Kenta Minamibayashi, Daisuke Ogata, Shusuke Shirai, Daisuke Izuhara
  • MULTILAYER ELECTROLYTE MEMBRANE, MEMBRANE ELECTRODE ASSEMBLY, WATER ELECTROLYSIS-TYPE HYDROGEN GENERATOR AND METHOD OF PRODUCING MULTILAYER ELECTROLYTE MEMBRANE
    Publication number: 20220216494
    Abstract: A laminated electrolyte membrane including a first layer including a hydrocarbon polymer electrolyte as a major component, and a second layer including a fluoropolymer electrolyte and polyvinylidene fluoride as major components laminated on at least one side of the first layer, wherein the first layer and the second layer are laminated via a region in which components constituting both layers are mixed in a mixed region.
    Type: Application
    Filed: March 19, 2020
    Publication date: July 7, 2022
    Inventors: Kenta Minamibayashi, Daisuke Ogata, Shusuke Shirai, Daisuke Izuhara
  • Composite polymer electrolyte membrane, membrane electrode assembly and solid polymer fuel cell using same
    Patent number: 10826098
    Abstract: A composite polymer electrolyte membrane has a high proton conductivity even under low-humidity, low-temperature conditions, a reduced dimensional change rate, a high mechanical strength and high chemical stability, and produces a solid polymer electrolyte fuel cell with a high output and high physical durability, a membrane electrode assembly, and a solid polymer electrolyte fuel cell containing the same. This composite polymer electrolyte membrane contains a composite layer composed mainly of a polyazole-containing nanofiber nonwoven fabric (A) and an ionic group-containing polymer electrolyte (B), the polyazole-containing nanofiber nonwoven fabric (A) being basic.
    Type: Grant
    Filed: February 13, 2017
    Date of Patent: November 3, 2020
    Assignees: Toray Industries, Inc., Japan Vilene Company, Ltd.
    Inventors: Yumiko Okamoto, Daisuke Izuhara, Junpei Yamaguchi, Shusuke Shirai, Tomoyuki Kunita, Hiroaki Umeda, Yuuta Wakamoto, Tatsunori Ito, Noriko Michihata, Takashi Tarao
  • COMPOSITE POLYMER ELECTROLYTE MEMBRANE, MEMBRANE ELECTRODE ASSEMBLY AND SOLID POLYMER FUEL CELL USING SAME
    Publication number: 20200091532
    Abstract: A composite polymer electrolyte membrane has a high proton conductivity even under low-humidity, low-temperature conditions, a reduced dimensional change rate, a high mechanical strength and high chemical stability, and produces a solid polymer electrolyte fuel cell with a high output and high physical durability, a membrane electrode assembly, and a solid polymer electrolyte fuel cell containing the same. This composite polymer electrolyte membrane contains a composite layer composed mainly of a polyazole-containing nanofiber nonwoven fabric (A) and an ionic group-containing polymer electrolyte (B), the polyazole-containing nanofiber nonwoven fabric (A) being basic.
    Type: Application
    Filed: February 13, 2017
    Publication date: March 19, 2020
    Inventors: Yumiko Okamoto, Daisuke Izuhara, Junpei Yamaguchi, Shusuke Shirai, Tomoyuki Kunita, Hiroaki Umeda, Yuuta Wakamoto, Tatsunori Ito, Noriko Michihata, Takashi Tarao