Patents by Inventor Fumiaki Fujie

Fumiaki Fujie 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).

  • Optical dust detector assembly for use in an automotive vehicle
    Patent number: 4748336
    Abstract: An optical dust detector assembly includes an air duct member having an introductory portion and a base portion for permitting a flow of air passing therethrough, the duct member having a pair of radial holes formed in its peripheral wall, a pair of cylindrical casings secured to the peripheral wall of the duct member at both sides thereof and having respective opening ends communicating with the interior of the duct member through the respective radial holes thereof, a light emission element arranged within one of the casings to emit a light beam and pass it through the radial holes toward the other casing, and a light receiving element arranged within the other casing to receive the light beam emitted from the light emission element and passed through the radial holes.
    Type: Grant
    Filed: May 1, 1986
    Date of Patent: May 31, 1988
    Assignee: Nippondenso Co., Ltd.
    Inventors: Fumiaki Fujie, Tetsuro Adachi, Tomonori Fukui, Noboru Oyama, Yukiyasu Ueno