Patents by Inventor Joji TOMIYASU

Joji TOMIYASU 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
    Patent number: 10541440
    Abstract: A fuel cell stack includes a plurality of single cells stacked and a manifold. The plurality of single cells each include a first separator including a seal portion surrounding the manifold and including a hollow protrusion and a fluid passage portion allowing the fluid to flow between the manifold and a space on the opposite side of the seal portion from the manifold via the hollow of the seal portion, a second separator disposed on the side opposite to the side on which the seal portion projects, of the first separator, and an electric insulating frame disposed on the opposite side of the second separator from the first separator. The second separator includes a flat-and-bulge portion in a surface facing the seal portion, along an abutment region of the seal portion and the electric insulating frame.
    Type: Grant
    Filed: February 16, 2018
    Date of Patent: January 21, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kazunori Shibata, Takashi Kajiwara, Kohsei Yoshida, Atsushi Ida, Joji Tomiyasu, Koji Fukunaga, Naohiro Hoshikawa
  • FUEL CELL STACK
    Publication number: 20180241070
    Abstract: A fuel cell stack includes a plurality of single cells stacked and a manifold. The plurality of single cells each include a first separator including a seal portion surrounding the manifold and including a hollow protrusion and a fluid passage portion allowing the fluid to flow between the manifold and a space on the opposite side of the seal portion from the manifold via the hollow of the seal portion, a second separator disposed on the side opposite to the side on which the seal portion projects, of the first separator, and an electric insulating frame disposed on the opposite side of the second separator from the first separator. The second separator includes a flat-and-bulge portion in a surface facing the seal portion, along an abutment region of the seal portion and the electric insulating frame.
    Type: Application
    Filed: February 16, 2018
    Publication date: August 23, 2018
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kazunori SHIBATA, Takashi KAJIWARA, Kohsei YOSHIDA, Atsushi IDA, Joji TOMIYASU, Koji FUKUNAGA, Naohiro HOSHIKAWA