Patents by Inventor Wolfang Krajewski

Wolfang Krajewski 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 fluid-fluid extraction of gallium, germanium or indium from liquid solutions
    Patent number: 4666686
    Abstract: A process for the fluid-fluid extraction of gallium, germanium or indium from acid or base hydrous solutions, in which a mixture of at least two hydroxyquinolines in various quantities is employed, is described.
    Type: Grant
    Filed: March 7, 1986
    Date of Patent: May 19, 1987
    Assignee: Preussag Aktiengesellschaft Metall
    Inventors: Wolfang Krajewski, Kunibert Hanusch