Patents by Inventor Katsuhiko Yazaki

Katsuhiko Yazaki 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).

  • Patent number: D306873
    Type: Grant
    Filed: May 11, 1987
    Date of Patent: March 27, 1990
    Assignee: Mitsubishi Pencil Co., Ltd.
    Inventor: Katsuhiko Yazaki
  • Patent number: D308075
    Type: Grant
    Filed: May 11, 1987
    Date of Patent: May 22, 1990
    Assignee: Mitsubishi Pencil Co., Ltd.
    Inventor: Katsuhiko Yazaki
  • Patent number: D311550
    Type: Grant
    Filed: October 28, 1987
    Date of Patent: October 23, 1990
    Assignee: Mitsubishi Pencil Co., Ltd.
    Inventor: Katsuhiko Yazaki
  • Patent number: D313620
    Type: Grant
    Filed: December 18, 1987
    Date of Patent: January 8, 1991
    Assignee: Mitsubishi Pencil Co., Ltd.
    Inventor: Katsuhiko Yazaki
  • Patent number: D313621
    Type: Grant
    Filed: December 18, 1987
    Date of Patent: January 8, 1991
    Assignee: Mitsubishi Pencil Co., Ltd.
    Inventor: Katsuhiko Yazaki
  • Patent number: D313622
    Type: Grant
    Filed: December 18, 1987
    Date of Patent: January 8, 1991
    Assignee: Mitsubishi Pencil Co., Ltd.
    Inventor: Katsuhiko Yazaki
  • Patent number: D313623
    Type: Grant
    Filed: December 18, 1987
    Date of Patent: January 8, 1991
    Assignee: Mitsubishi Pencil Co., Ltd.
    Inventor: Katsuhiko Yazaki
  • Patent number: D333882
    Type: Grant
    Filed: March 8, 1991
    Date of Patent: March 9, 1993
    Assignee: Mitsubishi Pencil Co., Ltd.
    Inventor: Katsuhiko Yazaki