Patents by Inventor Sylvain Cuman

Sylvain Cuman 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).

  • Control device of the transistor bases of an inverter arm
    Patent number: 4792885
    Abstract: An inverter arm is made up of two transistors electrically connected in series, each transistor having its own independent control unit. The control units are supplied by a common power supply unit ensuring galvanic insulation by means of a transformer with two distinct secondary windings. This galvanic insulation allows a potential difference of several hundred volts between the transistors and their control circuit.
    Type: Grant
    Filed: September 8, 1987
    Date of Patent: December 20, 1988
    Assignee: Merlin Gerin
    Inventors: Sylvain Cuman, Philippe J. Moreau