Patents by Inventor Kenneth N. Thanstrom

Kenneth N. Thanstrom 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 metal recovery and compositions useful therein
    Patent number: 4637865
    Abstract: A process for extracting a precious metal or base metal from a source material containing the metal. The process comprises contacting the source material with an aqueous leaching solution containing a leaching agent comprising an N-halohydantoin compound, thereby producing an aqueous leachate containing said metal. Aqueous leaching compositions, and novel electrowinning and other electrodeposition processes are also disclosed.
    Type: Grant
    Filed: August 16, 1985
    Date of Patent: January 20, 1987
    Assignee: Great Lakes Chemical Corporation
    Inventors: Rodney H. Sergent, Kenneth N. Thanstrom