Patents by Inventor Hayashi Takumi

Hayashi Takumi 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).

  • Slide bearing for cooling water circulation pump in fuel cell
    Patent number: 7290937
    Abstract: A slide bearing is proposed which rotatably supports a rotary shaft of an impeller in a cooling water circulation pump mounted to a fuel cell. The slide bearing is formed of a synthetic resin containing no metal ions such as polyetherketone resin. This prevents impurities originating from the slide bearing from being dissolved into cooling water for the fuel cell.
    Type: Grant
    Filed: June 21, 2005
    Date of Patent: November 6, 2007
    Assignee: NTN Corporation
    Inventors: Hayashi Takumi, Fukuzawa Satoru