Patents by Inventor Koichi Toriumi

Koichi Toriumi 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).

  • Aluminate phosphor
    Patent number: 5611959
    Abstract: An aluminate phosphor comprising (a) at least one element selected from the group consisting of Ba, Sr and Ca, (b) Eu, (c) Mg and/or Zn, (d) optionally Mn and (e) Al, said aluminate phosphor comprising a crystalline inorganic compound which shows, in its powder X-ray diffraction pattern upon incidence of X-rays of CuK.alpha..sub.1, no peak at Miller index 008 independent of a diffraction peak at Miller index 110.
    Type: Grant
    Filed: August 16, 1995
    Date of Patent: March 18, 1997
    Assignees: Mitsubishi Chemical Corporation, Kasei Optonix, Ltd.
    Inventors: Naoto Kijima, Yasuo Shimomura, Chisato Miura, Takayuki Hisamune, Masakazu Nabu, Koichi Toriumi