Patents by Inventor Kazuhito Koyama

Kazuhito Koyama 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 starting fuel cell power generation system
    Patent number: 4820594
    Abstract: This invention relates to a favorable method of starting a fuel cell power generation system in which fuel is used directly as a heating medium for raising the temperature of said system. Namely, the present invention relates to a method of starting a fuel cell power generation system composed of (a) a reformer which is composed of a reforming part packed with reforming catalyst and a heating part and in which a fuel is fed to the reformer inlet and the fuel is combusted at the heating part, thereby to heat the reforming part and (b) the above-mentioned fuel cell in which the fuel which has been passed through said reformer reforming part is introduced to the anode and the exhaust gas produced at said reformer heating part is fed to the cathode, comprising the step of starting the fuel cell power generation system to ignite the fuel present at the reformer heating part only when the reformer reforming part has been filled with fuel.
    Type: Grant
    Filed: February 9, 1987
    Date of Patent: April 11, 1989
    Assignee: Hitachi, Ltd.
    Inventors: Shigehisa Sugita, Kazuhito Koyama, Koji Shiina, Seiichiro Sakaguchi, Michio Kuroda, Yoshiki Noguchi