Patents by Inventor Sudeep S. Dewan

Sudeep S. Dewan 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).

  • Overvoltage disconnect circuit and battery using same
    Patent number: 5695886
    Abstract: A lithium ion battery is provided with an overvoltage switch (12) and an overvoltage control circuit (14). The overvoltage control circuit causes the overvoltage switch to open, thus disconnecting the battery from a charger, upon the battery voltage reaching a first predetermined level when charged by a charger not designed to charge a lithium ion battery. However, when the battery is connected to an appropriately designed charger, the battery receives an input signal through an input terminal (24) which causes the overvoltage control circuit to open the overvoltage switch at a higher second predetermined level, should the appropriately designed charger fail to enter voltage regulation when the battery voltage reaches the first predetermined level.
    Type: Grant
    Filed: March 7, 1996
    Date of Patent: December 9, 1997
    Assignee: Motorola, Inc.
    Inventors: Sudeep S. Dewan, Jose M. Fernandez, Vernon Meadows