Patents by Inventor Hung P. Van

Hung P. Van 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).

  • Solid state magnetron switcher
    Patent number: 6340912
    Abstract: Switching apparatus for switching on and off one or more microwave tubes. A preferred embodiment of the switching apparatus comprises a solid state magnetron switcher that switches a plurality of magnetrons on and off using a plurality of high voltage (IGBT) switches. The microwave tubes or magnetrons are driven from a single power supply. The technical approach employed in the present invention places all microwave tubes or magnetrons into low level oscillation prior to switching them into full conduction. This maintains minimal voltage across the high voltage switches while allowing only a small percentage (1-2%) of full load current to be drawn.
    Type: Grant
    Filed: March 31, 2000
    Date of Patent: January 22, 2002
    Assignee: Raytheon Company
    Inventors: John W. Gerstenberg, Hung P. Van