Patents by Inventor Shinichiro Ohbora

Shinichiro Ohbora 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).

  • Toner residual amount detecting device
    Patent number: 4133453
    Abstract: A toner residual amount detecting device for detecting a residual amount of toner in a toner hopper, comprises a capacitor section constructed of at least two electroconductive plates oppositely arranged in a toner-filled hopper, and an electric circuit portion adapted to detect a capacitance between the electroconductive plates which is varied according to a residual amount of toner in the toner hopper.
    Type: Grant
    Filed: December 16, 1976
    Date of Patent: January 9, 1979
    Assignee: Tokyo Shibaura Electric Co., Ltd.
    Inventor: Shinichiro Ohbora