Patents by Inventor Karst Vaartjes

Karst Vaartjes 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 having ionizable iodide salt
    Patent number: 7190118
    Abstract: A metal halide lamp comprising a substantially cylindrical discharge vessel having an internal diameter Di<2.0 mm and filled with an ionizable filling, wherein two electrodes are present at a mutual distance EA for maintaining a discharge in the discharge vessel, wherein the filling comprises an inert gas, such as Xe, having a pressure at room temperature between 5 and 25 bar, and an ionizable salt, characterized in that said ionizable salt is selected from the group comprising PrI3, NdI3 and LuI3.
    Type: Grant
    Filed: June 17, 2003
    Date of Patent: March 13, 2007
    Assignee: Koninklijke Philips Electronics, N.V.
    Inventors: Karst Vaartjes, Marco Haverlag, Josephus Christiaan Maria Hendricx
  • Metal halide lamp
    Publication number: 20050248269
    Abstract: A metal halide lamp comprising a substantially cylindrical discharge vessel having an internal diameter Di<2.0 mm and filled with an ionizable filling, wherein two electrodes are present at a mutual distance EA for maintaining a discharge in the discharge vessel, wherein the filling comprises an inert gas, such as Xe, having a pressure at room temperature between 5 and 25 bar, and an ionizable salt, characterized in that said ionizable salt is selected from the group comprising PrI3, NdI3 and LuI3.
    Type: Application
    Filed: June 17, 2003
    Publication date: November 10, 2005
    Applicant: Koninklijke Philips Electronics N.V.
    Inventors: Karst Vaartjes, Marco Haverlag, Josephus Chirstiaan Hendricx