Patents by Inventor Johannes Geijtenbeek

Johannes Geijtenbeek 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).

  • GAS DISCHARGE LAMP
    Publication number: 20070228912
    Abstract: A metal halide lamp has, when the lamp is operated in a vertical orientation, a coldest spot that is close to the top of the discharge chamber. Means are provided enabling more heat to be supplied to the bottom part than to the upper part of the lamp. In a lamp assembly, comprising the lamp arranged inside a bulb, the additional heat generating means may include a radiation coil.
    Type: Application
    Filed: May 25, 2007
    Publication date: October 4, 2007
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS, N.V.
    Inventors: Johannes Geijtenbeek, Fransiscus Vermeulen
  • Gas discharge lamp
    Publication number: 20050082985
    Abstract: A metal halide lamp (101) is described, the lamp being designed such that, when the lamp is operative in a vertical orientation, the location of the salt pool is close to the top of the discharge chamber (5). In an embodiment, the coldest spot is close to the top of the discharge chamber. Means are provided enabling more heat to be supplied to the bottom part than to the upper part. In a lamp assembly (10), comprising a lamp (101) arranged inside a bulb (11), additional heat generating means (90) may comprise a radiation coil (91).
    Type: Application
    Filed: December 23, 2002
    Publication date: April 21, 2005
    Inventors: Johannes Geijtenbeek, Fransiscus Vermeulen