Patents by Inventor Kouichirou Sakamoto

Kouichirou Sakamoto 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).

  • Power circuit
    Patent number: 7679321
    Abstract: A power circuit is disclosed which is connected to a power source supplying different currents. The power circuit supplying driving power from the power source to a load includes a switching unit configured to switch the driving power supplied to the load in response to an external switching signal.
    Type: Grant
    Filed: December 9, 2005
    Date of Patent: March 16, 2010
    Assignee: Mitsumi Electric Co., Ltd.
    Inventors: Junji Takeshita, Yasuhiro Tokumaru, Kouichirou Sakamoto
  • Power supply control circuit
    Patent number: 7466037
    Abstract: A power supply control circuit is disclosed. The power supply control circuit controls a current which is supplied from a power source to a load. The power supply control circuit includes a reverse current detecting circuit which detects a reverse current flowing from the load to the power source and a reverse current preventing circuit which disconnects a line between the power source and the load when the reverse current is detected by the reverse current detecting circuit.
    Type: Grant
    Filed: June 16, 2006
    Date of Patent: December 16, 2008
    Assignee: Mitsumi Electric Co., Ltd.
    Inventors: Junji Takeshita, Takashi Takeda, Kouichirou Sakamoto
  • Power supply control circuit
    Publication number: 20070081285
    Abstract: A power supply control circuit is disclosed. The power supply control circuit controls a current which is supplied from a power source to a load. The power supply control circuit includes a reverse current detecting circuit which detects a reverse current flowing from the load to the power source and a reverse current preventing circuit which disconnects a line between the power source and the load when the reverse current is detected by the reverse current detecting circuit.
    Type: Application
    Filed: June 16, 2006
    Publication date: April 12, 2007
    Inventors: Junji Takeshita, Takashi Takeda, Kouichirou Sakamoto
  • Power circuit
    Publication number: 20060209578
    Abstract: A power circuit is disclosed which is connected to a power source supplying different currents. The power circuit supplying driving power from the power source to a load includes a switching unit configured to switch the driving power supplied to the load in response to an external switching signal.
    Type: Application
    Filed: December 9, 2005
    Publication date: September 21, 2006
    Inventors: Junji Takeshita, Yasuhiro Tokumaru, Kouichirou Sakamoto