Patents by Inventor Espen Tjønneland WEFRING

Espen Tjønneland WEFRING 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 providing a cathode lining barrier layer in an electrolysis cell and a material for same
    Patent number: 11466377
    Abstract: The present invention relates to a method and a material for establishing a cathode barrier layer in electrolysis cells for production of aluminum of Hall-Heroult type, the barrier layer can comprise minerals combined with a compound that lowers the melting temperature of the minerals, such as fluorides.
    Type: Grant
    Filed: September 3, 2019
    Date of Patent: October 11, 2022
    Assignee: NORSK HYDRO ASA
    Inventors: Eirik Hagen, Espen Tjønneland Wefring, Christian Schøning
  • METHOD FOR PROVIDING A CATHODE LINING BARRIER LAYER IN AN ELECTROLYSIS CELL AND A MATERIAL FOR SAME
    Publication number: 20210310139
    Abstract: The present invention relates to a method and a material for establishing a cathode barrier layer in electrolysis cells for production of aluminum of Hall-Heroult type, the barrier layer can comprise minerals combined with a compound that lowers the melting temperature of the minerals, such as fluorides.
    Type: Application
    Filed: September 3, 2019
    Publication date: October 7, 2021
    Applicant: NORSK HYDRO ASA
    Inventors: Eirik HAGEN, Espen Tjønneland WEFRING, Christian SCHØNING