Patents by Inventor Rolt Hülss

Rolt Hülss 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).

  • Monolithic battery protection circuit
    Patent number: 6580250
    Abstract: In accordance with the objects of this invention, A battery protection circuit is achieved. The circuit comprises, first, a FET switch. Last, a control circuit determines the ON/OFF state of the FET switch. The FET switch and the control circuit comprise a single integrated circuit device. The control circuit may comprise over charge and over discharge detectors, a voltage reference, and a level shifter.
    Type: Grant
    Filed: February 28, 2002
    Date of Patent: June 17, 2003
    Assignee: Dialog Semiconductor GmbH
    Inventors: Achim Stellberger, Michael Keller, Rolt Hülss, Frank Kronmüller