Patents by Inventor Sanh D. Luong

Sanh D. Luong 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).

  • Remote bias voltage setting LTC control system
    Patent number: 5117175
    Abstract: In a alternating current power distribution system utilizing load tap changing (LTC) transformers having selectively actuable tap selector switches operable in response to an LTC control, system including circuitry for providing remotely adjustable bias voltage for combining with the LTC control voltage to remotely control any change of the center operating level of the band.
    Type: Grant
    Filed: October 16, 1990
    Date of Patent: May 26, 1992
    Inventors: Robert D. Pettigrew, Sanh D. Luong