Patents by Inventor Douglas M. Beuerman

Douglas M. Beuerman 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).

  • Double-bellows vacuum variable capacitor
    Patent number: 6268995
    Abstract: A vacuum variable capacitor includes a vacuum bellows for allowing a pressure differential between two volumes inside the capacitor, wherein one of the volumes may be a vacuum volume. The vacuum variable capacitor further includes a conductive bellows disposed within the vacuum volume. In such an arrangement, the materials selected for the vacuum bellows and the conductive bellows may be selected to optimize the function of each bellows.
    Type: Grant
    Filed: June 8, 2000
    Date of Patent: July 31, 2001
    Assignee: Jennings Technology
    Inventors: Douglas M. Beuerman, Mark H. Burleson