Patents by Inventor Douglas P. Hubbell

Douglas P. Hubbell 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).

  • High voltage transient voltage surge suppression fuse link system
    Patent number: 6501634
    Abstract: A high voltage transient surge suppression system which provides an improved fusing to greatly reduce or eliminate the chance of secondary combustion during an excess power situation. The invention discloses a fuse link system which places one or more fuse links between a first electrical potential and a second electrical potential, and which uses air to insulate or isolate electrical potentials so that products of combustion from an excess power surge do not form a conductive path between electrical potentials on a printed circuit board.
    Type: Grant
    Filed: June 17, 1999
    Date of Patent: December 31, 2002
    Inventor: Douglas P. Hubbell
  • Integrated power distribution and transient voltage surge supression system
    Patent number: D371113
    Type: Grant
    Filed: May 12, 1995
    Date of Patent: June 25, 1996
    Assignee: Northern Technologies, Inc.
    Inventors: Douglas P. Hubbell, Kenneth E. Morden, Mark C. Willis