Patents by Inventor Koert Oskam

Koert Oskam 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 with downconversion phosphor
    Patent number: 7141920
    Abstract: A gas discharge lamp has a gas discharge vessel filled with a gas filling suitable for a gas discharge which emits VUV radiation, with a phosphor coating containing a downconversion phosphor. The downconversion phosphor has, in a host lattice, a pair of activators of a first lanthanoid ion and a second lanthanoid ion; a sensitizer selected from the group formed by the thallium(I) ion, lead(II) ion and bismuth(III) ion; and samarium(II) ion co-activator.
    Type: Grant
    Filed: May 30, 2002
    Date of Patent: November 28, 2006
    Assignee: Koninklijke Philips Electronics, N.V.
    Inventors: Koert Oskam, Andries Meijerink, Rene Theodorus Wegh, Claus Feldmann, Detlef Uwe Wiechert, Thomas Juestel, Cornelis Reinder Ronda
  • Gas discharge lamp with down conversion luminophore
    Patent number: 6917153
    Abstract: A luminophore capable of down conversion has a host lattice with a pair of activators of a first lanthanoid ion and a second lanthanoid ion and a co-activator of a third lanthanoid ion. A gas discharge lamp fitted with a gas discharge vessel filled with a gas filling which is suitable for a gas discharge which emits VUV radiation, and has a luminophore coating containing the down conversion luminophore is environmentally friendly and has good lamp efficiency.
    Type: Grant
    Filed: April 25, 2002
    Date of Patent: July 12, 2005
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Koert Oskam, Paul Peijzel, Andries Meijerink, Claus Feldmann
  • Gas discharge lamp with down conversion luminophore
    Patent number: 6822385
    Abstract: A gas discharge lamp fitted with a gas discharge vessel filled with a gas filling is suitable for a gas discharge which emits VUV radiation, with a luminophore coating containing a down conversion luminophore and with means for igniting and maintaining a gas discharge in which the down conversion luminophore has in a host lattice a pair of activators of the a first lanthanoid ion and a second lanthanoid ion and a sensitizer selected from the group of the cerium (III) ion, praseodymium (III) ion, neodymium (III) ion, samarium (III) ion, europium (III) ion, gadolinium (III) ion, terbium (III) ion, dysprosium (III) ion, holmium (III) ion, erbium (III) ion, thulium (III) ion, ytterbium (III) ion and lutetium (III) ion, is environmentally friendly and has a high lamp efficiency &eegr;lamp.
    Type: Grant
    Filed: April 25, 2002
    Date of Patent: November 23, 2004
    Assignee: Koninklijke Philips Electronics, N.V.
    Inventors: Koert Oskam, Andries Meijerink
  • Gas discharge lamp with downcoversion phosphor
    Publication number: 20040155569
    Abstract: A gas discharge lamp fitted with a gas discharge vessel filled with a gas filling suitable for a gas discharge which emits VUV radiation, with a phosphor coating containing a downconversion phosphor and with means for igniting and maintaining a gas discharge, in which the downconversion phosphor has, in a host lattice, a pair of activators of a first lanthanoid ion and a second lanthanoid ion and a sensitizer selected from the group formed by the thallium(I) ion, lead(II) ion and bismuth(III) ion, is environmentally friendly and has a high lamp efficiency &eegr;lamp.
    Type: Application
    Filed: November 25, 2003
    Publication date: August 12, 2004
    Inventors: Koert Oskam, Andries Meijerink, Rene Wegh, Claus Feldman, Detlef Wiechert, Thomas Juestel, Cornelis Reinder Ronda
  • Gas discharge lamp with down conversion luminophore
    Publication number: 20020190645
    Abstract: A gas discharge lamp fitted with a gas discharge vessel filled with a gas filling is suitable for a gas discharge which emits VUV radiation, with a luminophore coating containing a down conversion luminophore and with means for igniting and maintaining a gas discharge in which the down conversion luminophore has in a host lattice a pair of activators of the a first lanthanoid ion and a second lanthanoid ion and a sensitizer selected from the group of the cerium (III) ion, praseodymium (III) ion, neodymium (III) ion, samarium (III) ion, europium (III) ion, gadolinium (III) ion, terbium (III) ion, dysprosium (III) ion, holmium (III) ion, erbium (III) ion, thulium (III) ion, ytterbium (III) ion and lutetium (III) ion, is environmentally friendly and has a high lamp efficiency &eegr;lamp.
    Type: Application
    Filed: April 25, 2002
    Publication date: December 19, 2002
    Inventors: Koert Oskam, Andries Meijerink
  • Gas discharge lamp with down conversion luminophore
    Publication number: 20020185961
    Abstract: A gas discharge lamp fitted with a gas discharge vessel filled with a gas filling is suitable for a gas discharge which emits VUV radiation, with a luminophore coating containing a down conversion luminophore and with means for igniting and maintaining a gas discharge, in which the down conversion luminophore has in a host lattice a pair of activators of a first lanthanoid ion and a second lanthanoid ion and a co-activator of a third lanthanoid ion, is environmentally friendly and has a very a good lamp efficiency.
    Type: Application
    Filed: April 25, 2002
    Publication date: December 12, 2002
    Inventors: Koert Oskam, Paul Peijzel, Andries Meijerink, Claus Feldmann