Patents by Inventor Katsuki Ishigaki

Katsuki Ishigaki 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 System
    Publication number: 20070298298
    Abstract: Disclosed is a fuel cell system capable of restraining a temperature change in a fuel cell caused by a refrigerant. The fuel cell system has a refrigerant circulating system for circulating the refrigerant from the fuel cell to the fuel cell. The refrigerant circulating system has flow control means for restraining the inflow of the refrigerant, which has a predetermined difference in temperature from that of the fuel cell, into the fuel cell.
    Type: Application
    Filed: December 14, 2005
    Publication date: December 27, 2007
    Inventors: Katsuki Ishigaki, Hironori Noto, Takashi Yamamoto, Masataka Ota