Patents by Inventor Anders Schei

Anders Schei 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).

  • Use of alumina-carbon agglomerates in the carbothermic production of aluminum
    Patent number: 7819937
    Abstract: An agglomerate comprising alumina, carbon, and a binder for use in a vapor recovery reactor of a carbothermic alumina reduction furnace is disclosed. A method for using alumina-carbon agglomerates to capture aluminum vapor species and utilize waste heat from off-gases in a vapor recovery reactor to form a recyclable material is also disclosed.
    Type: Grant
    Filed: January 7, 2010
    Date of Patent: October 26, 2010
    Assignees: Alcoa Inc., Elkem AS
    Inventors: Richard J. Fruehan, David J. Roha, Anders Schei, Mark L. Weaver
  • Use of alumina-carbon agglomerates in the carbothermic production of aluminum
    Patent number: 7753988
    Abstract: An agglomerate comprising alumina, carbon, and a binder for use in a vapor recovery reactor of a carbothermic alumina reduction furnace is disclosed. A method for using alumina-carbon agglomerates to capture aluminum vapor species and utilize waste heat from off-gases in a vapor recovery reactor to form a recyclable material is also disclosed.
    Type: Grant
    Filed: July 9, 2007
    Date of Patent: July 13, 2010
    Assignees: Alcoa Inc., Elkem AS
    Inventors: Richard J. Fruehan, David J. Roha, Anders Schei, Mark L. Weaver
  • USE OF ALUMINA-CARBON AGGLOMERATES IN THE CARBOTHERMIC PRODUCTION OF ALUMINUM
    Publication number: 20100107815
    Abstract: An agglomerate comprising alumina, carbon, and a binder for use in a vapor recovery reactor of a carbothermic alumina reduction furnace is disclosed. A method for using alumina-carbon agglomerates to capture aluminum vapor species and utilize waste heat from off-gases in a vapor recovery reactor to form a recyclable material is also disclosed.
    Type: Application
    Filed: January 7, 2010
    Publication date: May 6, 2010
    Applicant: Alcoa Inc.
    Inventors: Richard J. Fruehan, David J. Roha, Anders Schei, Mark L. Weaver
  • USE OF ALUMINA-CARBON AGGLOMERATES IN THE CARBOTHERMIC PRODUCTION OF ALUMINUM
    Publication number: 20090013823
    Abstract: An agglomerate comprising alumina, carbon, and a binder for use in a vapor recovery reactor of a carbothermic alumina reduction furnace is disclosed. A method for using alumina-carbon agglomerates to capture aluminum vapor species and utilize waste heat from off-gases in a vapor recovery reactor to form a recyclable material is also disclosed.
    Type: Application
    Filed: July 9, 2007
    Publication date: January 15, 2009
    Applicant: Alcoa Inc.
    Inventors: Richard J. Fruehan, David J. Roha, Anders Schei, Mark L. Weaver
  • Method for refining of silicon
    Patent number: 5788945
    Abstract: The present invention relates to a process for removing impurities from molten silicon by treatment of molten silicon contained in a vessel with a slag having the capability of removing the impurities, particularly boron from molten silicon wherein slag is continuously or substantially continuously added to the molten silicon and that the slag is continuously or substantially continuously inactivated or removed from the silicon melt as soon as equilibrium between the slag and molten silicon is reached with respect to the impurity elements or element to be removed.
    Type: Grant
    Filed: May 8, 1997
    Date of Patent: August 4, 1998
    Assignee: Elkem ASA
    Inventor: Anders Schei