Patents by Inventor Yoshihisa Minakawa

Yoshihisa Minakawa 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).

  • Camera
    Patent number: D296703
    Type: Grant
    Filed: October 27, 1986
    Date of Patent: July 12, 1988
    Assignee: Ricoh Company, Ltd.
    Inventors: Tetsuya Goto, Yoshihisa Minakawa
  • Camera
    Patent number: D306308
    Type: Grant
    Filed: February 20, 1987
    Date of Patent: February 27, 1990
    Assignee: Ricoh Company, Ltd.
    Inventor: Yoshihisa Minakawa
  • Camera
    Patent number: D314582
    Type: Grant
    Filed: April 8, 1988
    Date of Patent: February 12, 1991
    Assignee: Ricoh Company, Ltd.
    Inventors: Yoshihisa Minakawa, Tetsuya Goto
  • Electrostatic copying machine
    Patent number: D331772
    Type: Grant
    Filed: January 17, 1991
    Date of Patent: December 15, 1992
    Assignee: Ricoh Company, Ltd.
    Inventors: Yuji Suzuki, Yoshihisa Minakawa, Fumiyo Kojima, Mariko Ikeda
  • Document feeder for copying machine
    Patent number: D339155
    Type: Grant
    Filed: November 30, 1990
    Date of Patent: September 7, 1993
    Assignee: Ricoh Company, Ltd.
    Inventors: Yuji Suzuki, Yoshihisa Minakawa
  • Digital printer
    Patent number: D350978
    Type: Grant
    Filed: December 18, 1992
    Date of Patent: September 27, 1994
    Assignee: Ricoh Company, Ltd.
    Inventor: Yoshihisa Minakawa
  • Electronic copying machine
    Patent number: D358411
    Type: Grant
    Filed: January 27, 1993
    Date of Patent: May 16, 1995
    Assignee: Ricoh Company, Ltd.
    Inventors: Yoshihisa Minakawa, Makoto Sugita, Osamu Miki