Patents by Inventor David Porter Dix

David Porter Dix 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).

  • Redundant power over ethernet
    Patent number: 8674546
    Abstract: A VoIP switch includes a first input Ethernet port configured to receive electrical power from a first power sourcing equipment, and a second input Ethernet port configured to receive electrical power from a second power sourcing equipment. The VoIP switch may be configured such that the first input Ethernet port is powered by the first power sourcing equipment concurrently with the second input Ethernet port being powered by the second power sourcing equipment.
    Type: Grant
    Filed: March 10, 2011
    Date of Patent: March 18, 2014
    Assignee: ShoreTel, Inc.
    Inventors: David Porter Dix, Brian Davis
  • Telephone
    Patent number: D662908
    Type: Grant
    Filed: March 29, 2011
    Date of Patent: July 3, 2012
    Assignee: Shoretel, Inc.
    Inventors: David Porter Dix, Carles Puche Moré, Howard Nuk, Lucas Edmund Saule, Dieter Werner Rencken
  • Telephone
    Patent number: D662909
    Type: Grant
    Filed: March 29, 2011
    Date of Patent: July 3, 2012
    Assignee: Shoretel, Inc.
    Inventors: David Porter Dix, Carles Puche Moré, Howard Nuk, Lucas Edmund Saule, Dieter Werner Rencken