Patents by Inventor Torsten Fries

Torsten Fries 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).

  • Coated fluorescent substance, light emitting device comprising said substance and a method for producing said substance
    Patent number: 7678293
    Abstract: A coated phosphor, formed by a powder of individual grains of a phosphor as base material, the grains being coated with a coating material. The layer comprises a plurality of individual layers and is particulate in form, the individual primary particles of the layer being at least 5 nm in size. The mean layer thickness is at least 20 nm.
    Type: Grant
    Filed: February 20, 2004
    Date of Patent: March 16, 2010
    Assignees: OSRAM Gesellschaft mit beschränkter Haftung, Osram Opto Semiconductors GmbH
    Inventors: Bert Braune, Torsten Fries, Rainer Schirmer, Martin Zachau, Franz Zwaschka
  • Apparatus for producing oxidic nanocrystals
    Patent number: 7285252
    Abstract: An apparatus for producing oxidic nanocrystals from metal organic compounds or volatile inorganic compounds comprises an apparatus which includes a first vaporizer which is connected to a first carrier gas stream to produce a first reactant gas stream, a second vaporizer is connected to a second carrier gas stream to produce a second reactant gas stream the first and second reactant gas streams are connected to a first feed line and flow heated reactor wherein the reactants are heated and reacted to provide oxidic nanocrystals which are unagglomerated having a mean particle size of up to 20 nanometers.
    Type: Grant
    Filed: September 4, 2003
    Date of Patent: October 23, 2007
    Assignee: Patent-Treuhand-Gesellschaft fuer Elektrische Gluehlampen mbH
    Inventors: Armin Konrad, Torsten Fries, Alfred Gahn, Franz Kummer
  • Phosphor and light source comprising such a phosphor
    Patent number: 7267786
    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: Grant
    Filed: December 16, 2004
    Date of Patent: September 11, 2007
    Assignee: Patent-Treuhand-Gesellschaft fuer Elektrische Gluehlampen mbH
    Inventors: Tim Fiedler, Torsten Fries, Frank Jermann, Martin Zachau, Franz Zwaschka
  • Coated fluorescent substance, light emitting device comprising said substance and a method for producing said substance
    Publication number: 20060078734
    Abstract: A coated phosphor, formed by a powder of individual grains of a phosphor as base material, the grains being coated with a coating material. The layer comprises a plurality of individual layers and is particulate in form, the individual primary particles of the layer being at least 5 nm in size. The mean layer thickness is at least 20 nm.
    Type: Application
    Filed: February 20, 2004
    Publication date: April 13, 2006
    Inventors: Bert Braune, Torsten Fries, Rainer Schirmer, Martin Zachau, Franz Zwaschka
  • 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
  • Process and apparatus for producing oxidic nanocrystals
    Publication number: 20040052720
    Abstract: The present invention relates to a process for producing oxidic nanocrystals, the process comprising the following steps:
    Type: Application
    Filed: September 4, 2003
    Publication date: March 18, 2004
    Inventors: Armin Konrad, Torsten Fries, Alfred Gahn, Franz Kummer
  • Process and apparatus for producing oxidic nanocrystals
    Patent number: 6702957
    Abstract: The present invention relates to oxidic nanocrystals and a process and apparatus for producing oxidic nanocrystals from metalorganic compounds or volatile inorganic compounds. In particular, the process is suitable for oxidic or oxysulfidic nanocrystals, particularly based on the elements Y, Gd, Mg, Ca, Ba and Al. The nanocrystals preferably have a mean initial particle size of 1 to 20 nm.
    Type: Grant
    Filed: November 6, 2001
    Date of Patent: March 9, 2004
    Assignee: Patent-Treuhand-Gesellschaft fuer Elektrische Gluehlampen mbH
    Inventors: Armin Konrad, Torsten Fries, Alfred Gahn, Franz Kummer
  • 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
  • Process and apparatus for producing oxidic nanocrystals
    Patent number: 6391273
    Abstract: The present invention relates to oxidic nanocrystals and a process and apparatus for producing oxidic nanocrystals from metalorganic compounds or volatile inorganic compounds. In particular, the process is suitable for oxidic or oxysulfidic nanocrystals, particularly based on the elements Y, Gd, Mg, Ca, Ba and Al. The nanocrystals preferably have a mean initial particle size of 1 to 20 nm.
    Type: Grant
    Filed: July 20, 2000
    Date of Patent: May 21, 2002
    Assignee: Patent-Treuhand-Gesellschaft fuer Elektrische Gluehlampen mbH
    Inventors: Armin Konrad, Torsten Fries, Alfred Gahn, Franz Kummer
  • Process and apparatus for producting oxidic nanocrystals
    Publication number: 20020051740
    Abstract: The present invention relates to a process for producing oxidic nanocrystals, the process comprising the following steps:
    Type: Application
    Filed: November 6, 2001
    Publication date: May 2, 2002
    Inventors: Armin Konrad, Torsten Fries, Alfred Gahn, Franz Kummer