Patents by Inventor Anna M. Jackson

Anna M. Jackson 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).

  • Solvent treatment in the separation of palladium and/or gold from other platinum group and base metals
    Patent number: 4479922
    Abstract: We have discovered that by pretreating a thioether (R'--S--R) containing organic phase to be used as an extractant in a solvent extraction process for separating platinum group metals from base metals and/or each other in aqueous solution with a mild oxidant, e.g., cupric chloride, in an acidified aqueous phase, the tendency of stable emulsion formation during extraction can be substantially eliminated.
    Type: Grant
    Filed: April 4, 1983
    Date of Patent: October 30, 1984
    Assignee: AT&T Technologies, Inc.
    Inventors: Richard Haynes, Anna M. Jackson, Martin K. Zierold