Patents by Inventor Siniti Yamamoto

Siniti Yamamoto 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).

  • Gas composition sensor
    Patent number: 4206173
    Abstract: A gas composition sensor for sensing the air-fuel ratio of the exhaust gases from an automobile. The gas composition sensor includes a gas composition sensing element composed of a sintered metal oxide having an electric resistance value varying in accordance with the composition of gases to be sensed, and at least one reticulated metal plate is disposed inside or on the surface of the gas composition sensing element.
    Type: Grant
    Filed: May 8, 1978
    Date of Patent: June 3, 1980
    Assignee: Nippon Soken, Inc.
    Inventors: Hiroaki Yamaguchi, Tadashi Hattori, Siniti Yamamoto