Patents by Inventor Shima Kazumi

Shima Kazumi 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 power generating system
    Patent number: 4988580
    Abstract: A fuel cell power generating system comprising a central hydrogen-generating plant, a plurality of fuel cell power generating units installed respectively at the sites of power demand for on-site power generation, and piping comprising a main pipe connected to the hydrogen-generating plant, branch pipes connecting the fuel cell power generating units to the main pipe, and valves for regulating the pressure and flow rate of hydrogen gas according to the operating condition of the fuel cell power generating units. The fuel cell power generating units are operated according to power demand, and the surplus hydrogen gas is stored in the piping at an elevated pressure to supplement the capacity of the hydrogen-generating plant when the hydrogen gas demand of the fuel cell power generating units exceeds the capacity of the hydrogen-generating plant.
    Type: Grant
    Filed: October 20, 1989
    Date of Patent: January 29, 1991
    Assignee: Toyo Engineering Corporation
    Inventors: Kozo Ohsaki, Mitsuo Okada, Shima Kazumi