Patents by Inventor Jean H. Vliegen

Jean H. Vliegen 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 recovering germanium
    Patent number: 5277882
    Abstract: A germanium bearing sulphate solution containing indium and/or gallium is brought at pH 1-2.5 into contact with an organic phase, containing a substituted 8-hydroxyquinoline and an acid organophosphorus compound. So, in addition to germanium, indium and gallium are also extracted from the sulphate solution.
    Type: Grant
    Filed: September 25, 1991
    Date of Patent: January 11, 1994
    Assignee: Union Miniere s.a.
    Inventors: Jean H. Vliegen, Guy G. Haesebroek, Achille J. De Schepper