Patents by Inventor Tetsuya Sunahara

Tetsuya Sunahara 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).

  • Carbon sheet, gas diffusion electrode substrate, and fuel cell
    Patent number: 11837732
    Abstract: A porous carbon sheet including at least carbon fibers, having a thickness of 30 to 95 ?m, a gas permeation resistance of 0.5 to 8.8 Pa, and a tensile strength of 5 to 50 N/cm, and a gas diffusion electrode substrate including a porous carbon sheet containing at least carbon fibers, at least one surface thereof having a microporous layer containing at least an electric conductive filler, the gas diffusion electrode substrate being dividable in the thickness direction into a smaller pore part and a larger pore part, the larger pore part having a thickness of 3 to 60 ?m.
    Type: Grant
    Filed: December 8, 2016
    Date of Patent: December 5, 2023
    Assignee: Toray Industries, Inc.
    Inventors: Katsuya Sode, Takashi Chida, Toru Sugahara, Michio Wakatabe, Masaru Hashimoto, Tetsuya Sunahara, Yuya Umezaki
  • CARBON SHEET, GAS DIFFUSION ELECTRODE SUBSTRATE, AND FUEL CELL
    Publication number: 20190044153
    Abstract: A porous carbon sheet including at least carbon fibers, having a thickness of 30 to 95 ?m, a gas permeation resistance of 0.5 to 8.8 Pa, and a tensile strength of 5 to 50 N/cm, and a gas diffusion electrode substrate including a porous carbon sheet containing at least carbon fibers, at least one surface thereof having a microporous layer containing at least an electric conductive filler, the gas diffusion electrode substrate being dividable in the thickness direction into a smaller pore part and a larger pore part, the larger pore part having a thickness of 3 to 60 ?m.
    Type: Application
    Filed: December 8, 2016
    Publication date: February 7, 2019
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Katsuya Sode, Takashi Chida, Toru Sugahara, Michio Wakatabe, Masaru Hashimoto, Tetsuya Sunahara, Yuya Umezaki