Patents by Inventor John O. Hansen

John O. Hansen 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).

  • Speakerphone
    Patent number: D571776
    Type: Grant
    Filed: April 17, 2007
    Date of Patent: June 24, 2008
    Assignee: Polycom, Inc.
    Inventors: Anthony M. Duys, John O. Hansen, Kit Morris, Brad Collins, Crispian Tompkin