Patents by Inventor Otto Bade

Otto Bade 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 removal of impurities from secondary alumina fines and alumina and/or fluorine containing material
    Publication number: 20050163688
    Abstract: The invention relates to a process for removal of impurities from secondary aluminia fines and alumina and or fluorine containing material comprising. (a) acidification by adding an acid (2,12,32) to the material to be purified (1,11,31); (b) heading the acidified mixture (3,13,35); (c) leaching the mixture in a solution of an acid (6,16,39); (d) separating the solid and liquid.
    Type: Application
    Filed: December 17, 2002
    Publication date: July 28, 2005
    Applicant: ALSTOM (SWITZERLAND) LTD.
    Inventors: Otto Bade, Ivar Dahl