Patents by Inventor Tetsuyuki Doi

Tetsuyuki Doi 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).

  • Soldering iron
    Patent number: D530168
    Type: Grant
    Filed: June 22, 2005
    Date of Patent: October 17, 2006
    Assignee: Taiyo Electric Ind. Co., Ltd.
    Inventors: Tetsuyuki Doi, Tomohiro Shigekawa
  • Circular saw
    Patent number: D281663
    Type: Grant
    Filed: May 20, 1983
    Date of Patent: December 10, 1985
    Inventors: Hitoshi Tsuru, Tetsuyuki Doi
  • Cutter
    Patent number: D284546
    Type: Grant
    Filed: March 23, 1983
    Date of Patent: July 8, 1986
    Assignee: Ryobi Ltd
    Inventors: Hideki Kawakami, Tetsuyuki Doi
  • Electric drill
    Patent number: D287814
    Type: Grant
    Filed: February 10, 1984
    Date of Patent: January 20, 1987
    Assignee: Ryobi Ltd.
    Inventors: Etsuo Hiraishi, Tetsuyuki Doi, Hiroshi Morikawa
  • Printing machine
    Patent number: D290966
    Type: Grant
    Filed: July 17, 1985
    Date of Patent: July 21, 1987
    Assignee: Ryobi Ltd.
    Inventors: Toshiaki Saito, Koji Ishii, Tetsuyuki Doi
  • Fishing reel
    Patent number: D299849
    Type: Grant
    Filed: November 19, 1986
    Date of Patent: February 14, 1989
    Assignee: Ryobi Ltd
    Inventors: Tetsuyuki Doi, Etsuo Hiraishi
  • Fishing reel
    Patent number: D300055
    Type: Grant
    Filed: September 11, 1986
    Date of Patent: February 28, 1989
    Assignee: Ryobi Ltd.
    Inventors: Tetsuyuki Doi, Etsuo Hiraishi
  • Fishing reel
    Patent number: D300842
    Type: Grant
    Filed: February 27, 1987
    Date of Patent: April 25, 1989
    Assignee: Ryobi Ltd.
    Inventors: Tetsuyuki Doi, Masaharu Nouma
  • Fishing reel
    Patent number: D300843
    Type: Grant
    Filed: June 5, 1987
    Date of Patent: April 25, 1989
    Assignee: Ryobi Ltd.
    Inventors: Tetsuyuki Doi, Etsuo Hiraishi
  • Numbering machine
    Patent number: D302173
    Type: Grant
    Filed: May 13, 1986
    Date of Patent: July 11, 1989
    Assignee: Ryobi Limited
    Inventors: Tetsuyuki Doi, Kenso Maehara
  • Flowmeter
    Patent number: D602793
    Type: Grant
    Filed: December 16, 2008
    Date of Patent: October 27, 2009
    Assignee: Taiyo Electric Ind. Co., Ltd.
    Inventors: Tetsuyuki Doi, Nobuaki Nakamoto
  • Offset printing machine
    Patent number: D321000
    Type: Grant
    Filed: September 12, 1990
    Date of Patent: October 22, 1991
    Assignee: Ryobi Ltd.
    Inventors: Yusaku Kitamura, Tetsuyuki Doi
  • Offset printing machine
    Patent number: D323844
    Type: Grant
    Filed: January 4, 1989
    Date of Patent: February 11, 1992
    Assignee: Ryobi Ltd.
    Inventors: Yusaku Kitamura, Tetsuyuki Doi
  • Offset printing machine
    Patent number: D324537
    Type: Grant
    Filed: December 26, 1989
    Date of Patent: March 10, 1992
    Assignee: Ryobi Ltd.
    Inventors: Kenso Maehara, Tetsuyuki Doi
  • Offset printing machine
    Patent number: D324538
    Type: Grant
    Filed: December 26, 1989
    Date of Patent: March 10, 1992
    Assignee: Ryobi Ltd.
    Inventors: Kenso Maehara, Tetsuyuki Doi
  • Offset printing machine
    Patent number: D324696
    Type: Grant
    Filed: May 27, 1988
    Date of Patent: March 17, 1992
    Assignee: Ryobi Ltd.
    Inventors: Tetsuyuki Doi, Koji Ishii
  • Offset printing machine
    Patent number: D324876
    Type: Grant
    Filed: December 26, 1989
    Date of Patent: March 24, 1992
    Assignee: Ryobi Ltd.
    Inventors: Kenso Maehara, Tetsuyuki Doi
  • Offset printing machine
    Patent number: D332464
    Type: Grant
    Filed: December 9, 1991
    Date of Patent: January 12, 1993
    Assignee: Ryobi Ltd.
    Inventors: Tetsuyuki Doi, Hideo Aoyama, Katsushi Hirokawa
  • Offset printing machine
    Patent number: D332797
    Type: Grant
    Filed: December 6, 1991
    Date of Patent: January 26, 1993
    Assignee: Ryobi Ltd.
    Inventors: Takahiko Shinmoto, Tetsuyuki Doi
  • Offset printing machine
    Patent number: D341155
    Type: Grant
    Filed: January 2, 1992
    Date of Patent: November 9, 1993
    Assignee: Ryobi Ltd.
    Inventors: Yutaka Fujii, Tetsuyuki Doi