Patents by Inventor Fumiyoshi Kubo

Fumiyoshi Kubo 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).

  • Ignition timing control system for internal combustion engines
    Patent number: 4426975
    Abstract: In response to the occurrence of knocking in an internal combustion engine, the basic ignition timing is corrected in a direction to retard it through the charging and discharging of an integrator circuit. The integrated current output of the integrator circuit is varied in accordance with a voltage corresponding to the speed of the engine so as to limit the maximum amount of ignition timing retard at low speeds or high speeds of the engine.
    Type: Grant
    Filed: November 18, 1981
    Date of Patent: January 24, 1984
    Assignees: Nippondenso Co., Ltd., Toyota Jidosha Kogyo Kabushiki Kaisha
    Inventors: Shosuke Suzuki, Teruyoshi Ito, Yukio Sakakibara, Takashi Yamada, Fumiyoshi Kubo, Kunimasa Yoshimura, Mitsuyuki Ugajin, Kiyokane Kaji, Mitsuyuki Banno