Patents by Inventor Wilfried Sottman

Wilfried Sottman 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 recovery of metals from catalysts
    Patent number: 4384885
    Abstract: A process for the recovery of valuable metals from spent desulfurization catalyst wherein the catalyst, which has not been subjected to oxidative roasting, is thermally reduced in the presence of carbon and calcium oxide.
    Type: Grant
    Filed: March 4, 1980
    Date of Patent: May 24, 1983
    Assignee: Hermann C. Starck Berlin
    Inventors: Hans R. Muller, Bruno Krismer, Wilfried Sottman