Patents by Inventor Masahai Endou

Masahai Endou 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).

  • Electrode catalyst and electrochemical devices using the same
    Patent number: 6649300
    Abstract: An electrode catalyst for fuel cells which comprises a conductive carbon, platinum supported on the conductive carbon in an amount of from 20% by mass to 70% by mass based on the mass of the catalyst, and oxygen bonded chemically to the conductive carbon and present in the range of from 0.7 to 3 in atomic ratio to the platinum. The present electrode catalyst can attain a high activity because the platinum crystallite diameter has been kept small even when the platinum is supported in a large quantity in the amount more than 20% by mass. The catalyst is useful in fuel cells, e.g., solid polymer electrolyte fuel cells.
    Type: Grant
    Filed: May 18, 2001
    Date of Patent: November 18, 2003
    Assignee: N.E. Chemcat Corporation
    Inventors: Takashi Ito, Masahai Endou