Patents by Inventor Sumio Yoshizawa

Sumio Yoshizawa 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 electricity generation process
    Patent number: 5149600
    Abstract: The present invention provides an improved fuel cell electricity generation rocess which includes a desulfurizer, an adsorber, a reformer, a shift converter, and a fuel cell wherein reformed gas from the reformer is treated using a non-porous gas separation membrane comprising a polymer in place of the converter at a temperature of 50.degree.-150.degree. C. and a pressure of 2-10 kg/cm.sup.2 to separate carbon monoxide contained in the reformed gas.
    Type: Grant
    Filed: December 27, 1990
    Date of Patent: September 22, 1992
    Assignee: Petroleum Energy Center and Showa Shell Sekiyu Kabushiki Kaisha
    Inventors: Osamu Yamase, Sumio Yoshizawa, Tadayuki Miura