Patents by Inventor Hirok Sasaki

Hirok Sasaki 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).

  • High pressure metal vapor discharge lamp
    Patent number: 4568856
    Abstract: A high pressure metal vapor discharge lamp including an arc tube having at least a main electrode at each end thereof, a fill sealed in the arc tube, including mercury, metal halide and starting gases selected from the group consisting of Ar, Kr and Xe, a radioactive source material, impregnated with a radioactive substance having a half-life less than 1.times.10.sup.4 years, sealed in the arc tube and a circuit including a conventional low voltage mercury lamp ballast and a glow starter for starting the arc tube.
    Type: Grant
    Filed: December 12, 1983
    Date of Patent: February 4, 1986
    Assignee: Tokyo Shibaura Denki Kabushiki Kaisha
    Inventors: Akihiro Inoue, Tadao Kanoh, Taketo Kamei, Akihiro Kamiya, Toshihiko Ishigami, Akira Kohno, Hirok Sasaki