Patents by Inventor Haruhiko Kotake

Haruhiko Kotake 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).

  • Gas pressure sensor
    Patent number: 4703657
    Abstract: A gas pressure sensor comprises a contour piezoelectric vibrator and the pressure of gas is detected by measuring an equivalent series resistance of the vibrator which is surrounded by the gas whose pressure is to be detected.
    Type: Grant
    Filed: February 21, 1985
    Date of Patent: November 3, 1987
    Assignee: Toyo Communication Equipment Co. Ltd
    Inventors: Koichi Hirama, Yuji Miyazawa, Haruhiko Kotake