Patents by Inventor Robert Marenche

Robert Marenche 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).

  • Multiple ignition high intensity discharge ballast control circuit
    Patent number: 6316887
    Abstract: A ballast control circuit for a high intensity discharge lamp which operates in conjunction with an existing ballast IC, the IR2157-1, and serves to strike the lamp up to 20 times or until the lamp is lit.
    Type: Grant
    Filed: September 27, 2000
    Date of Patent: November 13, 2001
    Assignee: International Rectifier Corporation
    Inventors: Thomas J. Ribarich, Robert Marenche
  • Power factor correction control circuit
    Patent number: 6259614
    Abstract: A power factor control circuit for an AC to DC power converter includes an inductor receiving AC rectified power. The charging time of the inductor is controlled by a switching circuit based on a comparison between a DC bus voltage and a fixed reference voltage. The circuit operates without an AC rectified line sensing network, and without a current-sensing resistor connected to the source of the MOSFET switch.
    Type: Grant
    Filed: July 10, 2000
    Date of Patent: July 10, 2001
    Assignee: International Rectifier Corporation
    Inventors: Thomas J. Ribarich, Robert Marenche, Dana S. Wilhelm
  • Power factor correction control circuit
    Patent number: RE40016
    Abstract: A power factor control circuit for an AC to DC power converter includes an inductor receiving AC rectified power. The charging time of the inductor is controlled by a switching circuit based on a comparison between a DC bus voltage and a fixed reference voltage. The circuit operates without an AC rectified line sensing network, and without a current-sensing resistor connected to the source of the MOSFET switch.
    Type: Grant
    Filed: June 18, 2004
    Date of Patent: January 22, 2008
    Assignee: International Rectifier Corporation
    Inventors: Thomas J. Ribarich, Robert Marenche, Dana S. Wilhelm