Patents by Inventor Bjorn Gaudernack

Bjorn Gaudernack 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).

  • Process for the extraction of alumina from aluminum-containing silicates
    Patent number: 4110399
    Abstract: A process for the extraction of alumina from aluminum-containing silicates is disclosed. The process comprises acid leaching of the raw material, iron extraction, precipitation of the aluminum fraction as the aluminum chloride hexahydrate, removal of sodium chloride and calcination to alumina. The process can be made continuous with substantial regeneration and recycling of process components.
    Type: Grant
    Filed: March 30, 1977
    Date of Patent: August 29, 1978
    Assignee: Institutt for Atomenergi
    Inventors: Bjorn Gaudernack, Norvald Gjelsvik, Leif Farbu