Patents by Inventor Andreas Sebastianus Gertrudis Geven

Andreas Sebastianus Gertrudis Geven 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).

  • ELECTRIC DISCHARGE LAMP
    Publication number: 20090072743
    Abstract: An electric discharge lamp comprising: —a translucent ceramic lamp vessel; —a first and a second current conductor, each supporting an electrode in the lamp vessel; —an ionizable filling comprising a rare gas and metal halide in the lamp vessel; at least the first current conductor being halide-resistant, characterized in that the first current conductor forms an end cap of the lamp vessel, wherein said end cap is made of a metal selected from the group consisting of molybdenum, tungsten, iridium, rhodium, and rhenium, or an alloy thereof, and wherein said end cap is sealed onto the lamp vessel provided with a cermet layer comprising 10-60 vol. % molybdenum and 90-40 vol. % Al2O3.
    Type: Application
    Filed: October 20, 2005
    Publication date: March 19, 2009
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS, N.V.
    Inventors: Mark Bolech, Gerald Frederik Belder, Bart Theresia Verlinden, Sigrid Maria Roman Gelderland, Martinus Joseph Maria Kessels, Andreas Sebastianus Gertrudis Geven, Antonius Cornelis Van Amstel, Cornelis Johannes Maria Denissen
  • Discharged lamp with multiple electron emissive electrode bodies
    Patent number: 6541899
    Abstract: In a lighting arrangement comprising a low-pressure discharge lamp and a high-frequency ballast for cold-igniting and operating the low-pressure discharge lamp, said low-pressure discharge lamp is equipped with electrodes which each comprise two or more double-spiral tungsten electrode bodies covered with an emitter. The switching performance of the low-pressure discharge lamp is very high.
    Type: Grant
    Filed: October 30, 2000
    Date of Patent: April 1, 2003
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Marco Haverlag, Jean Johan Heuvelmans, John Fitzgerald, Andreas Sebastianus Gertrudis Geven