Patents by Inventor K. LeVier

K. LeVier 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).

  • PRECIOUS METAL RECOVERY USING THIOCYANATE LIXIVIANT
    Publication number: 20080066577
    Abstract: A heap with precious metal-containing mineral material with precious metal locked within sulfide mineralization is subjected to bio-oxidation followed by acidic thiocyanate leaching to dissolve precious metal. Sulfide sulfur is oxidized during both of the bio-oxidation and the thiocyanate leaching.
    Type: Application
    Filed: October 3, 2007
    Publication date: March 20, 2008
    Applicant: Newmont USA Limited
    Inventors: Rong Yu Wan, K. LeVier
  • PRECIOUS METAL RECOVERY USING THIOCYANATE LIXIVIANT
    Publication number: 20080066578
    Abstract: For removal of precious metal from thiocyanate leach solution, precious metal is transferred from precious metal-thiocyanate complex to precious metal-cyanide complex. Preparation of thiocyanate leach solution includes dissolving cyanide in an aqueous liquid and converting the cyanide to dissolved thiocyanate.
    Type: Application
    Filed: October 5, 2007
    Publication date: March 20, 2008
    Applicant: Newmont USA Limited
    Inventors: Rong Yu Wan, K. LeVier