Patents by Inventor H. Günter Holdenried

H. Günter Holdenried 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).

  • Method for producing highly pure, granular silicon in a fluidised bed
    Patent number: 7553466
    Abstract: The present invention relates to a method for producing highly pure, granular silicon with a narrow particle-size distribution by decomposing silanes or halosilanes in a fluidised bed and epitaxially growing silicon on silicon seed particles, which method is characterised in that the gas containing silicon is supplied to the reaction chamber in an upward flow and the contents of the fluidised bed are separated in a continuous or discontinuous manner, whereby a particle stream from the fluidised bed is supplied to a separator mounted outside the fluidised bed, particles of the desired size are separated and undersized particles are returned to the fluidised bed. The invention also relates to a device and the use thereof for carrying out said method.
    Type: Grant
    Filed: April 10, 2002
    Date of Patent: June 30, 2009
    Assignee: Solarworld Aktiengesellschaft
    Inventors: Heiko Herold, H. Günter Holdenried, Leslaw Mleczko, Matthias Pfaffelhuber, Karl-Theodor König
  • Method for producing highly pure, granular silicon in a fluidised bed
    Publication number: 20040151652
    Abstract: The present invention relates to a method for producing highly pure, granular silicon with a narrow particle-size distribution by decomposing silanes or halosilanes in a fluidised bed and epitaxially growing silicon on silicon seed particles, which method is characterised in that the gas containing silicon is supplied to the reaction chamber in an upward flow and the contents of the fluidised bed are separated in a continuous or discontinuous manner, whereby a particle stream from the fluidised bed is supplied to a separator mounted outside the fluidised bed, particles of the desired size are separated and undersized particles are returned to the fluidised bed. The invention also relates to a device and the use thereof for carrying out said method.
    Type: Application
    Filed: March 31, 2004
    Publication date: August 5, 2004
    Inventors: Heiko Herold, H. Gunter Holdenried, Leslaw Mleczko, Matthias Pfaffelhuber, Karl-Theodor Konig