Patents by Inventor Keiji Takenaka

Keiji Takenaka 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).

  • Liner for high pressure gas container and high pressure gas container
    Patent number: 7208207
    Abstract: A liner for a high pressure gas container includes a resin composition containing a polyphenylene sulfide resin and an olefin based resin. The resin composition has a methane gas permeability coefficient of 1.7×10?16 mol·m/m2·s·Pa or smaller at 40° C., and tensile elongation of 50% or greater after fracture at 23° C. A high pressure gas container having such a liner is also provided.
    Type: Grant
    Filed: January 31, 2002
    Date of Patent: April 24, 2007
    Assignee: Toyoda Gosei Co., Ltd.
    Inventors: Satoru Ono, Junji Koizumi, Yasuhiro Nishimura, Shingo Shimojima, Keiji Takenaka, Tetsuya Suzuki, Tsuyoshi Kato, Kuniyoshi Kondo, Takashi Ishikawa, Hirokazu Shimizu, Itsuo Kamiya
  • Liner for high pressure gas container and high pressure gas container
    Publication number: 20020150746
    Abstract: A liner for a high pressure gas container includes a resin composition containing a polyphenylene sulfide resin and an olefin based resin. The resin composition has a methane gas permeability coefficient of 1.7×10−16 mol·m/m2·s·Pa or smaller at 40° C., and tensile elongation of 50% or greater after fracture at 23° C. A high pressure gas container having such a liner is also provided.
    Type: Application
    Filed: January 31, 2002
    Publication date: October 17, 2002
    Inventors: Satoru Ono, Junji Koizumi, Yasuhiro Nishimura, Shingo Shimojima, Keiji Takenaka, Tetsuya Suzuki, Tsuyoshi Kato, Kuniyoshi Kondo, Takashi Ishikawa, Hirokazu Shimizu, Itsuo Kamiya