Patents by Inventor Douglas Kenneth Manness

Douglas Kenneth Manness 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).

  • DC/AC power converter
    Patent number: 6021052
    Abstract: A DC link power converter apparatus including a first DC to DC converter, a DC to AC converter and a load balancing storage element. The first DC to DC converter has first and second DC ports and the DC to AC converter has a third DC port and has an AC port. The first DC port is connectable to a DC source and the second DC port is connected to the third DC port. The AC port is connectable to an AC load. The load balancing energy storage element is connected to the second DC port for decoupling the DC to DC converter from the DC to AC converter by supplying energy to the third DC port when a voltage at the second DC port is tending to decrease and for storing energy received from the second DC port when a voltage at the third port is tending to increase.
    Type: Grant
    Filed: September 22, 1997
    Date of Patent: February 1, 2000
    Assignee: Statpower Technologies Partnership
    Inventors: Thomas Michael Unger, Haakon MacCallum, Douglas Kenneth Manness
  • Power converter
    Patent number: D401216
    Type: Grant
    Filed: April 30, 1997
    Date of Patent: November 17, 1998
    Assignee: Statpower Technologies Corporation
    Inventors: Edward Andre Person, Jeffrey Romeo Franchini, Douglas Kenneth Manness, William Ernest Fenton, Donald Putt