Patents by Inventor Naoki KUSHITANI

Naoki KUSHITANI 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).

  • Method of producing fuel cell stack
    Patent number: 11626598
    Abstract: A fuel cell stack includes a first metal separator and a second metal separator sandwiching a membrane electrode assembly. Bead seals are provided on the first and second metal separators. The bead seals protrude toward the membrane electrode assembly. A seal member is provided on a top part of each of the bead seals. In the process of producing the fuel cell stack, pressure medium is supplied to a coolant flow field formed between the first metal separator and the second metal separator. The supply pressure of the pressure medium is set to not less than the supply pressure of a coolant supplied to the coolant flow field during normal operation of the fuel cell stack.
    Type: Grant
    Filed: July 6, 2021
    Date of Patent: April 11, 2023
    Assignee: Honda Motor Co., Ltd.
    Inventors: Kensuke Namba, Naoki Kushitani
  • METHOD OF PRODUCING FUEL CELL STACK
    Publication number: 20220013795
    Abstract: A fuel cell stack includes a first metal separator and a second metal separator sandwiching a membrane electrode assembly. Bead seals are provided on the first and second metal separators. The bead seals protrude toward the membrane electrode assembly. A seal member is provided on a top part of each of the bead seals. In the process of producing the fuel cell stack, pressure medium is supplied to a coolant flow field formed between the first metal separator and the second metal separator. The supply pressure of the pressure medium is set to not less than the supply pressure of a coolant supplied to the coolant flow field during normal operation of the fuel cell stack.
    Type: Application
    Filed: July 6, 2021
    Publication date: January 13, 2022
    Inventors: Kensuke NAMBA, Naoki KUSHITANI