Patents by Inventor Kazunobu Koga

Kazunobu Koga 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 monitor apparatus
    Patent number: 6268710
    Abstract: A battery monitor apparatus for monitoring the voltage of each cell of a battery pack including a plurality of cells is disclosed, in which each cell of the battery pack having the plurality of cells is connected to a capacitor by a switch, so that the cell voltage is retrieved and measured, and the current is detected, thereby making it possible to control the charge/discharge of each cell. This apparatus includes a capacitor, a switch group for connecting the ends of an arbitrary one of the cells constituting the battery pack or the ends of an arbitrary plurality of the cells to the capacitor thereby to retrieve the voltage of one cell or a plurality of the cells, and a detector for detecting the voltage of the capacitor.
    Type: Grant
    Filed: March 31, 2000
    Date of Patent: July 31, 2001
    Assignee: Fujitsu Limited
    Inventor: Kazunobu Koga