Patents by Inventor Albert T. Knecht

Albert T. Knecht 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).

  • Treating manganese-containing ores with a metal sulfide
    Patent number: 4752332
    Abstract: A process for treating a first metal, manganese-containing ore comprising contacting the manganese-containing ore with an aqueous, acidic composition and a material containing at least one metal sulfide at conditions effective to (1) chemically reduce at least a portion of the manganese, (2) solubilize at least a portion of the metal from the metal sulfide, and (3) at least partially liberate the first metal from the ore; and recovering the first metal from the ore. The use of Thiobacillus ferrooxidans and/or added ferric ion in the contacting step are also disclosed.
    Type: Grant
    Filed: April 30, 1986
    Date of Patent: June 21, 1988
    Assignee: Ensci, Inc.
    Inventors: Rebekah Wu, Larry B. Tsai, Barbara A. Krebs-Yuill, David A. Milligan, Nestor J. Troncoso, John S. McBride, Albert T. Knecht