Patents by Inventor Norihiro Umeoka

Norihiro Umeoka 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).

  • Lamp unit
    Patent number: 4661890
    Abstract: A lamp unit includes a pair of support members facing each other and three baseless fluorescent lamps supported parallel to one another by the support members. Each support member has three support recesses located at predetermined intervals. One end of each lamp is fixedly inserted into each corresponding support recess of one of the support member and the other end to each corresponding support recess of the other support member. Each lamp has a radiation window extending in the axial direction thereof. The lamps are positioned so that light beams emitted from the windows thereof intersect on a desired straight line.
    Type: Grant
    Filed: March 28, 1986
    Date of Patent: April 28, 1987
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yoshimi Watanabe, Norihiro Umeoka, Hiroshi Kuroda