Patents by Inventor Masakazu Kumakura

Masakazu Kumakura 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).

  • Single-lens reflex digital camera
    Patent number: D439922
    Type: Grant
    Filed: June 20, 2000
    Date of Patent: April 3, 2001
    Assignee: Canon Kabushiki Kaisha
    Inventor: Masakazu Kumakura
  • Digital camera
    Patent number: D456435
    Type: Grant
    Filed: July 31, 2001
    Date of Patent: April 30, 2002
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tatsuya Hisatomi, Masakazu Kumakura, Masahito Owada
  • Digital camera
    Patent number: D466914
    Type: Grant
    Filed: January 14, 2002
    Date of Patent: December 10, 2002
    Assignee: Canon Kabushiki Kaisha
    Inventor: Masakazu Kumakura
  • Single-lens reflex camera body
    Patent number: D328754
    Type: Grant
    Filed: December 14, 1990
    Date of Patent: August 18, 1992
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masakazu Kumakura, Yoichi Tosaka
  • Single-lens reflex camera body with self-contained strobe
    Patent number: D328755
    Type: Grant
    Filed: December 14, 1990
    Date of Patent: August 18, 1992
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masakazu Kumakura, Yoichi Tosaka
  • Camera
    Patent number: D390245
    Type: Grant
    Filed: February 20, 1997
    Date of Patent: February 3, 1998
    Assignee: Canon Kabushiki Kaisha
    Inventor: Masakazu Kumakura
  • Single-lens reflex camera
    Patent number: D411218
    Type: Grant
    Filed: July 17, 1998
    Date of Patent: June 22, 1999
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masakazu Kumakura, Toshio Matsumoto