Patents by Inventor Hans-Hermann Riechers

Hans-Hermann Riechers 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).

  • Work-up of waste materials from barium or strontium sulfide leaching
    Patent number: 5312604
    Abstract: A process for working-up waste materials from barium sulfide or strontium sulfide leaching in which the amount of waste material to be disposed of is substantially decreased.
    Type: Grant
    Filed: December 9, 1992
    Date of Patent: May 17, 1994
    Assignee: Kali-Chemie AG
    Inventors: Paul Jaeger, Hans-Hermann Riechers, Karl Koehler, Martin Wulff