Patents by Inventor Koki Onuma

Koki Onuma 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: 6058766
    Abstract: A crank angle detector in which a rotary body rotates in association with a crankshaft of an engine and has portions to be detected every predetermined angle and at least one of the portions to be detected is lacking, and first and second pickups positioned near the outer periphery of the rotary body with a fixed angle difference therebetween, for generating first and second pulses each time the portion to be detected passes. When a number of second pulses equal to or more than a predetermined number are detected after the first pulse has been detected, the crank angle detector sets the time the first pulse is newly detected, as a reference position time for a rotating angle of the crankshaft.
    Type: Grant
    Filed: August 31, 1998
    Date of Patent: May 9, 2000
    Assignees: Keihin Corporation, Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Koki Onuma, Masato Ono, Shigeaki Kuwabara, Kazuhiro Sato
  • Patent number: D513758
    Type: Grant
    Filed: August 10, 2004
    Date of Patent: January 24, 2006
    Assignee: PENTAX Corporation
    Inventor: Koki Onuma
  • Patent number: D515125
    Type: Grant
    Filed: August 10, 2004
    Date of Patent: February 14, 2006
    Assignee: PENTAX Corporation
    Inventor: Koki Onuma
  • Patent number: D517106
    Type: Grant
    Filed: August 10, 2004
    Date of Patent: March 14, 2006
    Assignee: PENTAX Corporation
    Inventor: Koki Onuma
  • Patent number: D458950
    Type: Grant
    Filed: September 12, 2001
    Date of Patent: June 18, 2002
    Assignee: Asahi Kogaku Kogo Kabushiki Kaisha
    Inventor: Koki Onuma
  • Patent number: D548257
    Type: Grant
    Filed: February 22, 2006
    Date of Patent: August 7, 2007
    Assignee: PENTAX Corporation
    Inventors: Koki Onuma, Akira Watanabe
  • Patent number: D476351
    Type: Grant
    Filed: August 14, 2002
    Date of Patent: June 24, 2003
    Assignee: Pentax Corporation
    Inventor: Koki Onuma
  • Patent number: D557305
    Type: Grant
    Filed: June 26, 2006
    Date of Patent: December 11, 2007
    Assignee: PENTAX Corporation
    Inventor: Koki Onuma
  • Patent number: D572742
    Type: Grant
    Filed: February 9, 2007
    Date of Patent: July 8, 2008
    Assignee: PENTAX Corporation
    Inventor: Koki Onuma
  • Patent number: D304837
    Type: Grant
    Filed: January 8, 1987
    Date of Patent: November 28, 1989
    Assignee: Asahi Kogaku Kogyo Kabushiki Kaisha
    Inventor: Koki Onuma
  • Patent number: D313423
    Type: Grant
    Filed: April 12, 1988
    Date of Patent: January 1, 1991
    Assignee: Asahi Kogaku Kogyo Kabushiki Kaisha
    Inventors: Koki Onuma, Masahiro Koinuma
  • Patent number: D335680
    Type: Grant
    Filed: February 14, 1991
    Date of Patent: May 18, 1993
    Assignee: Asahi Kogaku Kogyo K.K.
    Inventor: Koki Onuma
  • Patent number: D618794
    Type: Grant
    Filed: April 21, 2006
    Date of Patent: June 29, 2010
    Assignee: PENTAX Corporation
    Inventor: Koki Onuma
  • Patent number: D641081
    Type: Grant
    Filed: October 27, 2010
    Date of Patent: July 5, 2011
    Assignee: Hoya Corporation
    Inventor: Koki Onuma
  • Patent number: D641082
    Type: Grant
    Filed: October 27, 2010
    Date of Patent: July 5, 2011
    Assignee: Hoya Corporation
    Inventor: Koki Onuma
  • Patent number: D643117
    Type: Grant
    Filed: October 8, 2010
    Date of Patent: August 9, 2011
    Assignee: Hoya Corporation
    Inventor: Koki Onuma
  • Patent number: D674486
    Type: Grant
    Filed: May 19, 2010
    Date of Patent: January 15, 2013
    Assignee: Pentax Corporation
    Inventor: Koki Onuma