Patents by Inventor Alfred Gahn

Alfred Gahn 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).

  • 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
  • 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
  • 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
  • Powder metal electrode component for discharge lamps
    Patent number: 6211615
    Abstract: The electrode component according to the invention is produced by means of the metal powder injection molding method. As a result, complex shapes can be realized for the electrode.
    Type: Grant
    Filed: September 8, 1998
    Date of Patent: April 3, 2001
    Assignee: Patent-Truehand-Gesellshaft fuer Elektrische Gluelampen mbH
    Inventors: Bernhard Altmann, Alfred Gahn, Dietmar Illig, Peter Schade
  • Circuit arrangement for the metrological determination of diameters of metal bodies
    Patent number: 6140824
    Abstract: A circuit arrangement for measuring the diameters of metal bodies is provided which permits reliable and stable measurement of changes in diameter in a simple way. Measuring signals of relatively high accuracy are formed by compensating for environmental parameters such as ambient temperature and humidity. A dynamic reference signal which depends on the environmental parameters is formed for this purpose.
    Type: Grant
    Filed: July 14, 1998
    Date of Patent: October 31, 2000
    Assignee: Patent-Treuhand-Gesellschaft fuer Elektrishe Gluehlampen
    Inventors: Robert Spangenberg, Fritz Pauker, Alfred Gahn