Patents by Inventor Douglas Joseph Huhmann

Douglas Joseph Huhmann 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).

  • Circuitry for protecting a N-channel load driving device from reverse voltage condition
    Patent number: 6201427
    Abstract: The invention relates to circuitry for protecting n-channel load driving devices from reverse voltage conditions and for inhibiting the flow of destructive currents through such devices under reverse voltage conditions. According to one embodiment of the invention, a circuit is provided for protecting an n-channel high side load driving device from negative battery and negative transient operating conditions.
    Type: Grant
    Filed: January 25, 1999
    Date of Patent: March 13, 2001
    Assignee: Delco Electronics Corporation
    Inventors: Douglas Bruce Osborn, Douglas Joseph Huhmann, Mark Wendell Gose