Patents by Inventor Maurice Matheas Maria Hendrikx

Maurice Matheas Maria Hendrikx 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).

  • Ballast for feeding a high-pressure gas discharge lamp
    Patent number: 6498439
    Abstract: A ballast for feeding a high-pressure discharge lamp. The ballast: supplies the lamp with an AC voltage at an ignition frequency (fi) during an ignition period (ti), supplies the lamp with an AC voltage at a glow frequency (fg) during a glow period (tg) following the ignition period (ti), repeats the start-up sequence of ignition period and glow period (ti, tg), supplies the lamp with an AC voltage at an operating frequency (fb) during an operating period (tb) following the last start-up sequence, and interrupts the power supply to the lamp in a start-up sequence, not being the last start-up sequence, during an interruption period (td) following the glow period (tg).
    Type: Grant
    Filed: April 20, 2001
    Date of Patent: December 24, 2002
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Hubertus Cornelis Maria Van Den Nieuwenhuizen, Maurice Matheas Maria Hendrikx, Gerardus Hinderikus Heijne
  • Ballast for feeding a high-pressure gas discharge lamp
    Publication number: 20020047621
    Abstract: A ballast for feeding a high-pressure discharge lamp, comprising:
    Type: Application
    Filed: April 20, 2001
    Publication date: April 25, 2002
    Inventors: Hubertus Cornelis Maria Van Den Nieuwenhuizen, Maurice Matheas Maria Hendrikx, Gerardus Hinderikus Heijne