Patents by Inventor Shigeo Hiraoka

Shigeo Hiraoka 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).

  • Copying machine
    Patent number: D328095
    Type: Grant
    Filed: February 21, 1990
    Date of Patent: July 21, 1992
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Shinichi Sugihara, Akishige Sai, Shigeo Hiraoka, Kunio Yamada, Eiji Fujita, Masahiko Moriwaki
  • Sorter for a copying machine
    Patent number: D329454
    Type: Grant
    Filed: July 10, 1990
    Date of Patent: September 15, 1992
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Shinichi Sugihara, Akishige Sai, Shigeo Hiraoka, Kunio Yamada, Eiji Fujita, Masahiko Moriwaki
  • Document feeder for a copying machine
    Patent number: D329455
    Type: Grant
    Filed: July 10, 1990
    Date of Patent: September 15, 1992
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Shinichi Sugihara, Akishige Sai, Shigeo Hiraoka, Kunio Yamada, Eiji Fujita, Masahiko Moriwaki
  • Copying machine
    Patent number: D339370
    Type: Grant
    Filed: February 25, 1992
    Date of Patent: September 14, 1993
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Shinichi Sugihara, Eiji Fujita, Akishige Sai, Masahiko Moriwaki, Shigeo Hiraoka, Kunio Yamada, Yoko Yamazaki
  • Controller for video game machine
    Patent number: D354316
    Type: Grant
    Filed: October 27, 1993
    Date of Patent: January 10, 1995
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventor: Shigeo Hiraoka
  • Video game machine
    Patent number: D354523
    Type: Grant
    Filed: October 21, 1993
    Date of Patent: January 17, 1995
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Shigeo Hiraoka, Takayuki Hayami, Shinichi Sugihara