Patents by Inventor Hideki Nakajou

Hideki Nakajou 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).

  • Battery pack, method and electronic device for controlling its operation device
    Patent number: 5783998
    Abstract: A battery pack including a secondary battery is coupled to an electronic device to behave as a power source of the electronic device. The battery pack comprises a plus terminal (EB+) and a minus terminal (EB-) for supplying a current to the electronic device, a communication terminal (DATAB) for exchanging data with the electronic device, a connection terminal (BATTINB) connected to said electronic device when the plus terminal and the minus terminal are properly connected to the electronic device, battery status measuring elements (6, 7) for measuring the temperature and the voltage of the secondary battery, and CPU (1) for establishing one of operation modes in response to the voltages at the communication terminal and the connection terminal.
    Type: Grant
    Filed: May 2, 1996
    Date of Patent: July 21, 1998
    Assignee: Sony Corporation
    Inventors: Hideki Nakajou, Takeshi Miura, Minoru Doura