Patents by Inventor Arjan J. Van Den Berg

Arjan J. Van Den Berg 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).

  • Discharge lamp circuit with dual ignition coils
    Patent number: 6198232
    Abstract: A ballast circuit for a compact fluorescent lamp includes a down-converter for operating the lamp with a DC current during stationary operation. The ballast circuit is equipped with an additional inductor. The choke of the down-converter and the additional inductor jointly ignite the lamp. During stationary operation, the additional inductor conveys no current.
    Type: Grant
    Filed: October 22, 1999
    Date of Patent: March 6, 2001
    Assignee: U.S. Philips Corporation
    Inventors: Antonius A. M. Marinus, Ludovicus F. J. Oostvogels, Etienne N. K. P. M. Eberson, Arjan J. Van Den Berg