Patents by Inventor Yasuki IZUTSU

Yasuki IZUTSU 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).

  • Fuel cell stack and method for manufacturing fuel cell stack
    Patent number: 10665872
    Abstract: A fuel cell stack including a plurality of electricity generation units fastened by means of a plurality of fastening members. Each electricity generation unit includes a single cell, and a sealing member sandwiched between two other members thereby sealing one of the anode chamber and the cathode chamber. The surface of the sealing member included in at least one electricity generation units, the surface facing either of the two other members, has a surface roughness Ra of 3.0 ?m or less.
    Type: Grant
    Filed: June 7, 2016
    Date of Patent: May 26, 2020
    Assignee: NGK SPARK PLUG CO., LTD.
    Inventors: Nobuyuki Hotta, Hideki Ishikawa, Shunta Ohashi, Yasuki Izutsu
  • Fuel cell stack and method for manufacturing fuel cell stack
    Patent number: 10637075
    Abstract: A fuel cell stack including a plurality of electricity generation units fastened by means of a plurality of fastening members. Each electricity generation unit includes a single cell, and a sealing member sandwiched between two other members thereby sealing one of the anode chamber and the cathode chamber. The surface of the sealing member included in at least one electricity generation units, the surface facing either of the two other members, has a surface roughness Ra of 3.0 ?m or less.
    Type: Grant
    Filed: June 7, 2016
    Date of Patent: April 28, 2020
    Assignee: NGK SPARK PLUG CO., LTD.
    Inventors: Nobuyuki Hotta, Hideki Ishikawa, Shunta Ohashi, Yasuki Izutsu
  • FUEL CELL STACK AND METHOD FOR MANUFACTURING FUEL CELL STACK
    Publication number: 20180159148
    Abstract: A fuel cell stack including a plurality of electricity generation units fastened by means of a plurality of fastening members. Each electricity generation unit includes a single cell, and a sealing member sandwiched between two other members thereby sealing one of the anode chamber and the cathode chamber. The surface of the sealing member included in at least one electricity generation units, the surface facing either of the two other members, has a surface roughness Ra of 3.0 ?m or less.
    Type: Application
    Filed: June 7, 2016
    Publication date: June 7, 2018
    Applicant: NGK SPARK PLUG CO., LTD.
    Inventors: Nobuyuki HOTTA, Hideki ISHIKAWA, Shunta OHASHI, Yasuki IZUTSU