Patents by Inventor Gerlach Emmen

Gerlach Emmen 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).

  • Circuit Arrangement
    Publication number: 20070222392
    Abstract: A driver for HID lamps comprises four switches and generates a constant DC current that is commutated at a low frequency. The driver comprises a filter capacitor. The occurrence of peak currents due to the charging or discharging of the filter capacitor is prevented by driving one of the switches at a high frequency immediately after commutation.
    Type: Application
    Filed: March 24, 2005
    Publication date: September 27, 2007
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS, N.V.
    Inventors: Lukas Leyten, Christofher Hooijer, Roy Van Zundert, Gerlach Emmen