Patents by Inventor Yoshiharu Orioka

Yoshiharu Orioka 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).

  • Photoelectric smoke detector
    Patent number: 4754150
    Abstract: A photoelectric smoke detector is equipped with a light emitter for radiating light into a measuring space. A light receiver detects scattered light caused by the presence of smoke in the measuring space. The measuring chamber is constructed as a light trap such that the light beam radiated by the light emitter is multiply reflected and cannot reach the light receiving element of the light receiver.
    Type: Grant
    Filed: August 23, 1985
    Date of Patent: June 28, 1988
    Assignee: Nohmi Bosai Kogyo Co. Ltd.
    Inventors: Yoshiharu Orioka, Mikio Mochizuki