Patents by Inventor Yasuhiro Otuka

Yasuhiro Otuka 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).

  • Detector for carbon monoxide concentration of a gas
    Patent number: 4421720
    Abstract: Apparatus for the detection of carbon monoxide concentration of a gas. The apparatus comprises a base from which a pair of arms extend, a resistance layer disposed on each arm serving both to measure the difference in temperature between the arms and to heat a catalyst layer; a protective layer on the resistance layers to prevent electrical shorts caused by deposit of conductive particles in the gas to be detected; and a catalyst layer on one and only one of the arms in contact with the protective layer.
    Type: Grant
    Filed: May 28, 1981
    Date of Patent: December 20, 1983
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hideo Kamiya, Hiroshi Shinohara, Yasuhiro Otuka, Mari Okazaki