Patents by Inventor Kouji Orikawa

Kouji Orikawa 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).

  • Dual-power-supply system
    Patent number: 8017256
    Abstract: A dual-power-supply system uses both a fuel cell and a chargeable secondary battery. A differential voltage adding unit adds a differential voltage between the voltage of the fuel cell and a necessary target output voltage to the voltage of the fuel cell by using the secondary battery, thereby obtaining an output voltage of the dual-power-supply system. A control unit detects the output voltage, and controls the differential voltage adding unit such that the output voltage is equal to the target output voltage.
    Type: Grant
    Filed: May 12, 2010
    Date of Patent: September 13, 2011
    Assignees: Olympus Corporation, National University Corporation Nagaoka University of Technology
    Inventors: Toshio Horiguchi, Junichi Itoh, Kouji Orikawa
  • DUAL-POWER-SUPPLY SYSTEM
    Publication number: 20100221626
    Abstract: A dual-power-supply system uses both a fuel cell and a chargeable secondary battery. A differential voltage adding unit adds a differential voltage between the voltage of the fuel cell and a necessary target output voltage to the voltage of the fuel cell by using the secondary battery, thereby obtaining an output voltage of the dual-power-supply system. A control unit detects the output voltage, and controls the differential voltage adding unit such that the output voltage is equal to the target output voltage.
    Type: Application
    Filed: May 12, 2010
    Publication date: September 2, 2010
    Applicants: OLYMPUS CORPORATION, National University Corporation Nagaoka University of Technology
    Inventors: Toshio HORIGUCHI, Junichi Itoh, Kouji Orikawa