Patents by Inventor Masami Hirono

Masami Hirono 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 having surface coated with a quaternary salt-containing compound
    Patent number: 6020067
    Abstract: A phosphor having a surface coated with a metal alkoxide containing a quaternary ammonium salt.
    Type: Grant
    Filed: September 9, 1997
    Date of Patent: February 1, 2000
    Assignee: Kasei Optonix, Ltd.
    Inventors: Tetsuji Iwama, Noboru Matsuhisa, Masami Hirono, Masaru Naito, Makoto Hattori