Patents by Inventor Katsuji Dohi

Katsuji Dohi 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).

  • Temperature sensor
    Patent number: 4883366
    Abstract: A temperature sensor includes a capacitor having electrodes between which a dielectric body having its dielectric constant variable depending on the variations of ambient temperature is interposed, and a CR oscillating circuit utilizing the capacitor. The dielectric body is made of a ceramic dielectric material which has a working temperature range in the normal dielectric phase with the dielectric constant thereof having a temperature coefficient ranged between -1,000 ppm/.degree.C. and -10,000 ppm/.degree.C. The ceramic dielectric body is also used as a substrate on which the CR oscillating circuit is formed.
    Type: Grant
    Filed: September 28, 1988
    Date of Patent: November 28, 1989
    Assignee: Murata Mfg. Co., Ltd.
    Inventors: Katsuji Dohi, Akira Kumada, Michihiro Murata