Patents by Inventor Håvard Sørheim

Håvard Sørheim 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).

  • Publication number: 20120275983
    Abstract: A reusable silicon nitride containing crucible is described. The crucible contains boron (B) or a boron containing compound and phosphorous (P) or a phosphorous containing compound. Use of the crucible for crystallizing silicon is also described.
    Type: Application
    Filed: December 22, 2010
    Publication date: November 1, 2012
    Inventors: Håvard Sørheim, Arve Solheim, Egbert Van De Schootbrugge
  • Publication number: 20120242016
    Abstract: Device for holding a silicon melt comprising a crucible, which partly surrounds an inner chamber for holding the melt, with a base and at least one side wall made of a base material, whereby the crucible comprises at least one equalizing means for equalizing mechanical thermal stresses.
    Type: Application
    Filed: November 29, 2010
    Publication date: September 27, 2012
    Inventors: Bernhard Freudenberg, Josef Stenzenberger, Michael Timm, Arve Solheim, Håvard Sørheim, Egbert van de Schootbrugge
  • Publication number: 20120056359
    Abstract: Method and apparatus for preparing of at least one ceramic shaped part. A cavity is provided between at least one external shape and at least one internal shape. A Si-containing powder composition is then provided in the cavity. The composition is then heated in a reactive gas atmosphere to obtain a reaction bounded ceramic shaped part. Use of the apparatus is also described.
    Type: Application
    Filed: April 23, 2010
    Publication date: March 8, 2012
    Inventors: Håvard Sørheim, Arve Solheim