Patents by Inventor David James Krug

David James Krug 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).

  • Low cost routes to high purity silicon and derivatives thereof
    Patent number: 8475758
    Abstract: The present invention is directed to a method for providing an agricultural waste product having amorphous silica, carbon, and impurities; extracting from the agricultural waste product an amount of the impurities; changing the ratio of carbon to silica; and reducing the silica to a high purity silicon (e.g., to photovoltaic silicon).
    Type: Grant
    Filed: August 6, 2009
    Date of Patent: July 2, 2013
    Assignee: Mayaterials, Inc.
    Inventors: Richard M. Laine, David James Krug, Julien Claudius Marchal, Andrew Stewart Mccolm
  • LOW COST ROUTES TO HIGH PURITY SILICON AND DERIVATIVES THEREOF
    Publication number: 20110206592
    Abstract: The present invention is directed to a method for providing an agricultural waste product having amorphous silica, carbon, and impurities; extracting from the agricultural waste product an amount of the impurities; changing the ratio of carbon to silica; and reducing the silica to a high purity silicon (e.g., to photovoltaic silicon).
    Type: Application
    Filed: August 6, 2009
    Publication date: August 25, 2011
    Inventors: Richard M. Laine, David James Krug, Julien Claudius Marchal, Andrew Stewart Mccolm