Patents by Inventor Kazuaki Ootsuka

Kazuaki Ootsuka 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).

  • Fluorescent substance and light-emitting device using the same
    Publication number: 20060081814
    Abstract: Disclosed is a fluorescent substance comprising an alkaline earth ortho-silicate, the fluorescent substance being activated by Eu2+, and further comprising at least one selected from the group consisting of La, Gd, Cs and K.
    Type: Application
    Filed: October 13, 2005
    Publication date: April 20, 2006
    Applicants: Kabushiki Kaisha Toshiba, Toshiba Materials Co., Ltd.
    Inventors: Naomi Shida, Masaaki Tamatani, Yoshihito Tsutsui, Kazuaki Ootsuka, Ryosuke Hiramatsu
  • Fluorescent substance containing nitrogen, method for manufacturing the same, and light-emitting device
    Publication number: 20060011936
    Abstract: Disclosed is a method for manufacturing a nitrogen-containing fluorescent substance comprising accommodating an oxide fluorescent substance containing two or more elements in a receptacle made of a material containing carbon, and sintering the oxide fluorescent substance in a mixed gas atmosphere containing nitrogen gas.
    Type: Application
    Filed: July 13, 2005
    Publication date: January 19, 2006
    Inventors: Ryosuke Hiramatsu, Kazuaki Ootsuka, Naomi Shida, Masaaki Tamatani, Hisayo Uetake, Yoshihito Tsutsui