Patents by Inventor Tarek Khalil

Tarek Khalil 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).

  • Process for the preparation of garnet phosphors in a pulsation reactor
    Publication number: 20090189507
    Abstract: The invention relates to a process for the preparation of garnet phosphors or precursors thereof having particles with an average particle size of 50 nm to 20 ?m via a multistep thermal process in a pulsation reactor, and to illumination units comprising the garnet phosphors according to the invention.
    Type: Application
    Filed: May 21, 2007
    Publication date: July 30, 2009
    Inventors: Holger Winkler, Tarek Khalil, Gerd Fischer, Lars Leidolph
  • Process for the Preparation of Mixed Oxides by Means of Spray Pyrolysis
    Publication number: 20080318761
    Abstract: The present invention relates to a novel process for the preparation of compact, spherical mixed oxide powders having an average particle size of <10 ?m by spray pyrolysis, and to the use thereof as phosphor, as base material for phosphors or as starting material for ceramic production or for the preparation of high-density, high-strength and optionally transparent bulk material by means of hot-pressing technology.
    Type: Application
    Filed: December 24, 2005
    Publication date: December 25, 2008
    Inventors: Guenter Riedel, Matthias Koch, Stefan Ambrosius, Steffen Frank, Tarek Khalil, Lars Leidolph