Patents by Inventor Tutomu Tomita

Tutomu Tomita 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).

  • Exhaust gas purifying system for use in internal combustion engine
    Patent number: 3962868
    Abstract: An exhaust gas purifying system for use in an internal combustion engine for controlling the air injection into an exhaust manifold and the circulation of exhaust gases from the exhaust manifold to a suction pipe, due to a negative pressure prevailing in the suction pipe, in which the negative pressure varies depending on the running conditions of the engine.
    Type: Grant
    Filed: September 12, 1974
    Date of Patent: June 15, 1976
    Assignee: Toyota Jidosha Kogyo Kabushiki Kaisha
    Inventors: Noboru Matumoto, Takao Nonoyama, Tutomu Tomita, Yukio Suzuki