Patents by Inventor Johannes Jacobus Franciscus Geijtenbeek

Johannes Jacobus Franciscus 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).

  • Metal halide lamp
    Patent number: 7671537
    Abstract: A metal halide lamp includes a discharge vessel surrounded by an outer envelope with clearance and has a ceramic wall which encloses a discharge space filled with a filling comprising an inert gas, such as xenon (Xe), and an ionizable salt. In the discharge space, two electrodes are arranged whose tips have a mutual interspacing so as to define a discharge path between them. The ionizable salt comprises NaI, TlI, CaI2 and X-iodide wherein X is selected from the group comprising rare earth metals.
    Type: Grant
    Filed: March 1, 2005
    Date of Patent: March 2, 2010
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Johannes Jacobus Franciscus Geijtenbeek, Antonius Arnoldus Duisters, Theodorus Gerardus Marinus Maria Kappen, Joseph Leonardus Gregorius Suijker, Vincent Marco Fischer, Gerardus Marinus Josephus Franciscus Luijks, Hendrik Anton Van Esveld, Vital Louis Elisabeth Bruyndoncx
  • Metal Halide Lamp
    Publication number: 20080278077
    Abstract: A metal halide lamp comprising a discharge vessel surrounded by an outer envelope with clearance and having a ceramic wall which encloses a discharge space filled with a filling comprising an inert gas, such as xenon (Xe), and an ionizable salt, wherein in said discharge space two electrodes are arranged whose tips have discharge path between them, with the special feature that said ionizable salt comprises NaI, TlI, CaI2 and X-iodide wherein X is selected from the group comprising rare earth metals.
    Type: Application
    Filed: March 1, 2005
    Publication date: November 13, 2008
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS, N.V.
    Inventors: Johannes Jacobus Franciscus Geijtenbeek, Antonius Arnoldus Duisters, Theodorus Gerardus Marinus Maria Kappen, Joseph Leonardus Gregorius Suijker, Vincent Marco Fischer, Gerardus Marinus Josephus Franciscus Luijks, Hendrik Anton Van Esveld, Vital Louis Elisabeth Bruyndoncx
  • Method and device for driving a metal halide lamp
    Patent number: 7432665
    Abstract: A method for driving a lamp is described includes generating a light controlling DC electric field E with a desired direction and a desired strength inside the lamp such as to obtain a desirable ion distribution inside the lamp. The lamp is supplied with a commutating current with a DC component, having a constant current intensity and a duty cycle differing from 50%. By setting the duty cycle, it is possible to set a certain average value of the lamp current, allowing the efficacy and/or color temperature of the lamp to be influenced.
    Type: Grant
    Filed: April 22, 2003
    Date of Patent: October 7, 2008
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Johannes Jacobus Franciscus Geijtenbeek, Johan Leopold Victorina Hendrix, Fransiscus Arnoldus Vermeulen
  • Gas discharge lamp
    Patent number: 7233109
    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: Grant
    Filed: December 23, 2002
    Date of Patent: June 19, 2007
    Assignee: Koninklijke Philips Electronics, N.V.
    Inventors: Johannes Jacobus Franciscus Geijtenbeek, Fransiscus Arnoldus Vermeulen
  • Electric high-pressure discharge lamp
    Patent number: 6577064
    Abstract: The electric high-pressure discharge lamp has tungsten electrodes (2) in a light-transmitting lamp vessel (1) which is closed in a gastight manner. The electrodes (2) comprise an emitter, preferably in the form of an inner coiled-coil (14), which is loosely retained in a cavity (12) of a basket (6) of the electrode (2). The inner coil (14) acts as a non-oxidic emitter. The lamp retains its initial light output to a high degree throughout its life.
    Type: Grant
    Filed: May 11, 2001
    Date of Patent: June 10, 2003
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Theodorus Peterus Cornelis Maria Vos, Catharina Johanna Maria Daemen, Francis Jozef Clementina Vandyck, Hendrik Anton Van Esveld, Johannes Jacobus Franciscus Geijtenbeek
  • Electric high-pressure discharge lamp
    Publication number: 20020033672
    Abstract: The electric high-pressure discharge lamp has tungsten electrodes (2) in a light-transmitting lamp vessel (1) which is closed in a gastight manner. The electrodes (2) comprise an emitter, preferably in the form of an inner coiled-coil (14), which is loosely retained in a cavity (12) of a basket (6) of the electrode (2). The inner coil (14) acts as a non-oxidic emitter. The lamp retains its initial light output to a high degree throughout its life.
    Type: Application
    Filed: May 11, 2001
    Publication date: March 21, 2002
    Inventors: Theodorus Peterus Cornelis Maria Vos, Catharina Johanna Maria Daemen, Francis Jozef Clementina Vandyck, Hendrik Anton Van Esveld, Johannes Jacobus Franciscus Geijtenbeek