Patents by Inventor Sadayoshi Wada

Sadayoshi Wada 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).

  • Oxygen sensor
    Patent number: 4140611
    Abstract: An oxygen sensor which comprising: a case having an inlet means and an outlet means through which gas passes. A sensor element is installed within the case, and an oxidation catalyzer is arranged upstream of said sensor element within said case. The inlet means or oxidation catalyzer is arranged so that a part of the gas which is introduced through the inlet means into the case flows without passing through the oxidation catalyzer while the other part of said gas passes through the oxidation catalyzer.
    Type: Grant
    Filed: November 29, 1977
    Date of Patent: February 20, 1979
    Assignee: Toyota Jidosha Kogyo Kabushiki Kaisha
    Inventors: Takehisa Yaegashi, Shinichi Sugiyama, Sadayoshi Wada