Patents by Inventor Tim Fiedler

Tim Fiedler 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).

  • Highly efficient stable oxynitride phosphor
    Publication number: 20060103297
    Abstract: Phosphor from the class of the oxynitridosilicates, having a cation M which is doped with divalent europium, and having the empirical formula MSi2O2N2, where M=Sr1-x-yCayEux where 0.3?x+y?0.725, with a Ca/Eu ratio of >1, the oxynitridosilicate having an emission with a dominant wavelength in the range from 555 to 568 nm.
    Type: Application
    Filed: October 21, 2005
    Publication date: May 18, 2006
    Applicants: Gluhlampen mbH
    Inventors: Tim Fiedler, Frank Jermann
  • Phosphor composition for lamps
    Publication number: 20060038162
    Abstract: The invention relates to a phosphor composition for lamps with a lattice of monoclinic crystal structure (monazite) of type (1?g)[((1?c?a)*Ln, c*Ce, a*A)PO4]×g*GeO2, in which Ln is at least one element selected from the group consisting of lanthanum La, gadolinium Gd and/or Yttrium Y and A is at least one activator selected from the group consisting of terbium Tb, praseodymium Pr and/or europium Eu, and 0?a?1.0; 0?c?1.0, and 0<g?0.2.
    Type: Application
    Filed: August 9, 2005
    Publication date: February 23, 2006
    Applicant: PATENT-TREUHAND-GESELLSCHAFT FUR ELEKTRISCHE GLUHLAMPEN MBH
    Inventors: Tim Fiedler, Gunter Huber, Ulrich Muller, Martin Zachau
  • Phosphor and light source comprising such a phosphor
    Publication number: 20050242329
    Abstract: A phosphor with a garnet structure is distinguished by the addition of Si. It is suitable in particular for photon excitation by light sources with an emission between 250 and 550 nm.
    Type: Application
    Filed: December 16, 2004
    Publication date: November 3, 2005
    Applicant: Patent-Treuhand-Gesellschaft Fur Elektrische Gluhlampen MBH
    Inventors: Tim Fiedler, Torsten Fries, Frank Jermann, Martin Zachau, Franz Zwaschka
  • Illumination unit having at least one LED as light source
    Patent number: 6670748
    Abstract: An illumination unit having at least one LED as light source, the LED emitting primary radiation in the range from 300 to 570 nm, this radiation being partially or completely converted into longer-wave radiation by phosphors which are exposed to the primary radiation of the LED, in which unit the conversion takes place at least with the aid of a nitride-containing phosphor which emits with a peak emission wavelength at 430 to 670 nm and which originates from the class of the Ce- or Eu-activated nitrides, oxynitrides or sialons.
    Type: Grant
    Filed: July 26, 2002
    Date of Patent: December 30, 2003
    Assignee: Patent-Treuhand-Gesellschaft für Elektrische Glühlampen mbH
    Inventors: Andries Ellens, Torsten Fries, Tim Fiedler, Günter Huber
  • Illumination unit having at least one LED as light source
    Publication number: 20030094893
    Abstract: An illumination unit having at least one LED as light source, the LED emitting primary radiation in the range from 300 to 570 nm, this radiation being partially or completely converted into longer-wave radiation by phosphors which are exposed to the primary radiation of the LED, in which unit the conversion takes place at least with the aid of a nitride-containing phosphor which emits with a peak emission wavelength at 430 to 670 nm and which originates from the class of the Ce-or Eu-activated nitrides, oxynitrides or sialons.
    Type: Application
    Filed: July 26, 2002
    Publication date: May 22, 2003
    Applicant: PATENT-TREUHAND-GESELLSCHAFT FUR ELEKTRISCHE GLUHLAMPEN mbH
    Inventors: Andries Ellens, Torsten Fries, Tim Fiedler, Gunter Huber