Patents by Inventor Seizo Ishikura

Seizo Ishikura 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).

  • Patent number: 4088450
    Abstract: A plurality of catalysts are arranged in a desirable order based on the temperature gradient existing in the reaction chamber. The operating temperature of the catalyst and the temperature of the portion of the reaction chamber it is in, are matched so as to avoid catalytic degradation and/or catalytic inactivity.
    Type: Grant
    Filed: September 7, 1976
    Date of Patent: May 9, 1978
    Assignee: Nissan Motor Company, Limited
    Inventors: Katuaki Kosaka, Zene Ueno, Seizo Ishikura, Atushi Chida