Patents by Inventor Sadaki Igarashi

Sadaki Igarashi 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).

  • Ratio meter for capacitive-type displacement converter
    Patent number: 4211971
    Abstract: A ratio meter adapted to determine the ratio of a first input signal representing the difference between two input voltages and a second signal representing the sum of both input voltages.
    Type: Grant
    Filed: June 29, 1978
    Date of Patent: July 8, 1980
    Assignee: Hokushin Electric Works, Ltd.
    Inventors: Tamotsu Kobayashi, Sadaki Igarashi