Patents by Inventor Katsuhiko Ooiwa

Katsuhiko Ooiwa 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).

  • Fuel consumption rate detecting apparatus
    Patent number: 4008607
    Abstract: A fuel consumption rate detecting apparatus comprises a circuit for representing fuel consumption amount per unit time, a pulse generator for generating a pulse signal whose pulse width is inversely proportional to the fuel consumption and whose frequency is inversely proportional to the vehicle speed, and meter circuit for measuring the mean value of the pulse signal, which is, in turn, proportional to the fuel consumption rate.
    Type: Grant
    Filed: June 30, 1975
    Date of Patent: February 22, 1977
    Assignee: Nippondenso Co., Ltd.
    Inventors: Katsuhiko Ooiwa, Shigehiko Ito, Shinichi Maeda