Patents by Inventor Shinjiro Motoki

Shinjiro Motoki 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).

  • Phosphor and manufacturing method thereof
    Patent number: 5851428
    Abstract: A raw material prepared by washing a phosphor powder containing a phosphor host material and an activator with an acid solution, followed by drying the washed powder, is heated within a thermal plasma at a temperature which permits partially melting the phosphor, followed by cooling and subsequently subjecting the resultant phosphor at 1200.degree. to 1700.degree. C., thereby manufacturing spherical phosphor particles having a concentration gradient in a radial direction.
    Type: Grant
    Filed: March 13, 1997
    Date of Patent: December 22, 1998
    Assignees: Kabushiki Kaisha Toshiba, Neturen Co., Ltd.
    Inventors: Naotoshi Matsuda, Masaaki Tamatani, Miwa Okumura, Keiko Albessard, Kazuhiro Kawasaki, Seiji Yokota, Shinjiro Motoki, Yoshiaki Inoue