Patents by Inventor Elmar L. Muller

Elmar L. Muller 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).

  • Chloride heap leaching
    Patent number: 8070851
    Abstract: A heap leaching method to recover copper from a primary copper sulphide mineral wherein the mineral is leached in an acidic chloride/sulphate solution in the presence of oxygen with the surface potential of the mineral below 600 mV (vs. SHE) to cause dissolution of the copper sulphide.
    Type: Grant
    Filed: November 6, 2008
    Date of Patent: December 6, 2011
    Assignee: BHP Billiton SA Limited
    Inventors: Elmar L. Muller, Petrus Basson, Michael J. Nicol
  • Chloride Heap Leaching
    Publication number: 20090173188
    Abstract: A heap leaching method to recover copper from a primary copper sulphide mineral wherein the mineral is leached in an acidic chloride/sulphate solution in the presence of oxygen with the surface potential of the mineral below 600 mV (vs. SHE) to cause dissolution of the copper sulphide.
    Type: Application
    Filed: November 6, 2008
    Publication date: July 9, 2009
    Inventors: Elmar L. Muller, Petrus Basson, Michael J. Nicol