Patents by Inventor Shinji Tazawa

Shinji Tazawa 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).

  • Metal halide lamp
    Patent number: 8736167
    Abstract: A metal halide lamp having a luminous tube formed of translucent alumina as translucent ceramic in which additives of halides are sealingly included to emit at least red, blue and green light components, wherein an energy rate of a red light component is set to 55% to 75% and an energy ratio of a blue light component is set to 15% to 25%.
    Type: Grant
    Filed: November 22, 2011
    Date of Patent: May 27, 2014
    Assignee: Iwasaki Electric Co., Ltd.
    Inventors: Yoshihisa Shibata, Kenji Okayasu, Shinji Tazawa
  • METAL HALIDE LAMP
    Publication number: 20120126696
    Abstract: A metal halide lamp having a luminous tube formed of translucent alumina as translucent ceramic in which additives of halides are sealingly included to emit at least red, blue and green light components, wherein an energy rate of a red light component is set to 55% to 75% and an energy ratio of a blue light component is set to 15% to 25%.
    Type: Application
    Filed: November 22, 2011
    Publication date: May 24, 2012
    Applicant: IWASAKI ELECTRIC CO., LTD.
    Inventors: Yoshihisa Shibata, Kenji Okayasu, Shinji Tazawa