Patents by Inventor Takeshi Kagawa

Takeshi Kagawa 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).

  • Hot-wire TIG welding apparatus
    Patent number: 4614856
    Abstract: A hot-wire TIG welding apparatus capable of performing a stable welding regardless of change in the welding conditions. The welding apparatus comprises a hot-wire feed speed control means for controlling the speed of feed of a hot wire, and a heating power control means adapted to control the electric power for heating the hot wire. The condition of the control in either one of the control sections is changed in accordance with a change in the control condition of the other.
    Type: Grant
    Filed: October 5, 1984
    Date of Patent: September 30, 1986
    Assignee: Babcock-Hitachi Kabushiki Kaisha
    Inventors: Katsuyoshi Hori, Takeshi Kagawa, Kazuki Kusano, Toshiaki Takuwa
  • Case for dental handpiece
    Patent number: D579195
    Type: Grant
    Filed: January 2, 2008
    Date of Patent: October 28, 2008
    Assignee: Nakanishi, Inc.
    Inventor: Takeshi Kagawa
  • Dental handpiece
    Patent number: D583052
    Type: Grant
    Filed: March 6, 2007
    Date of Patent: December 16, 2008
    Assignee: Nakanishi Inc.
    Inventor: Takeshi Kagawa
  • Dental handpiece
    Patent number: D594556
    Type: Grant
    Filed: February 9, 2007
    Date of Patent: June 16, 2009
    Assignee: Nakanishi Inc.
    Inventor: Takeshi Kagawa
  • Dental handpiece
    Patent number: D621940
    Type: Grant
    Filed: September 14, 2009
    Date of Patent: August 17, 2010
    Assignee: Nakanishi Inc.
    Inventor: Takeshi Kagawa
  • Dental handpiece
    Patent number: D625414
    Type: Grant
    Filed: September 14, 2009
    Date of Patent: October 12, 2010
    Assignee: Nakanishi Inc.
    Inventor: Takeshi Kagawa
  • Partial lever portion of a dental handpiece
    Patent number: D625819
    Type: Grant
    Filed: January 14, 2010
    Date of Patent: October 19, 2010
    Assignee: Nakanishi Inc.
    Inventors: Takeshi Kagawa, Toshiya Takiguchi
  • Controller for dental handpiece
    Patent number: D631164
    Type: Grant
    Filed: September 15, 2009
    Date of Patent: January 18, 2011
    Assignee: Nakanishi Inc.
    Inventor: Takeshi Kagawa
  • Controller for dental handpiece
    Patent number: D631549
    Type: Grant
    Filed: September 14, 2009
    Date of Patent: January 25, 2011
    Assignee: Nakanishi Inc.
    Inventor: Takeshi Kagawa
  • Dental handpiece
    Patent number: D653755
    Type: Grant
    Filed: December 20, 2010
    Date of Patent: February 7, 2012
    Assignee: Nakanishi Inc.
    Inventors: Toshiya Takiguchi, Takeshi Kagawa
  • Dental handpiece
    Patent number: D658292
    Type: Grant
    Filed: April 28, 2011
    Date of Patent: April 24, 2012
    Assignee: Nakanishi Inc.
    Inventor: Takeshi Kagawa
  • Dental handpiece
    Patent number: D658293
    Type: Grant
    Filed: April 28, 2011
    Date of Patent: April 24, 2012
    Assignee: Nakanishi Inc.
    Inventor: Takeshi Kagawa
  • Controller for dental handpiece
    Patent number: D663423
    Type: Grant
    Filed: February 22, 2011
    Date of Patent: July 10, 2012
    Assignee: Nakanishi Inc.
    Inventor: Takeshi Kagawa
  • Dental handpiece
    Patent number: D663839
    Type: Grant
    Filed: June 21, 2011
    Date of Patent: July 17, 2012
    Assignee: Nakanishi Inc.
    Inventor: Takeshi Kagawa
  • Controller for dental handpiece
    Patent number: D663848
    Type: Grant
    Filed: February 22, 2011
    Date of Patent: July 17, 2012
    Assignee: Nakanishi Inc.
    Inventor: Takeshi Kagawa