Patents by Inventor Freidrich-Werner Thomas

Freidrich-Werner Thomas 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).

  • D.c.-a.c. converter having an asymmetric half-bridge circuit
    Patent number: 4768141
    Abstract: The invention relates to a d.c.-a.c. converter with an asymmetric half-bridge circuit (1) that has an energy-storing component (6). The controllable switching means (2, 5) of the asymmetric half-bridge circuit (1) are driven by means of phase-shifted control pulses, the control pulses partly overlapping in time. The pulse width of the phase-shifted control pulses is substantially 180 electrical degrees.
    Type: Grant
    Filed: January 27, 1987
    Date of Patent: August 30, 1988
    Inventors: Guido Hubertus, Freidrich-Werner Thomas, Wolfgang Sperzel, Johann Sturmer