Patents by Inventor P. Terry O'Kane

P. Terry O'Kane 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).

  • Oxidative pressure leach recovery of precious metals using halide ions
    Publication number: 20020152845
    Abstract: A method for recovering a precious metal from a host material, comprises the steps of subjecting the host material to an oxidative pressure leach process, in the presence of a halide ion constituent, preferably a chloride ion, which is reactive with the precious metal, and at an elevated temperature of at least 170° C. to cause at least a portion of the precious metal to be extracted by a leach solution in the form of a precious metal-bearing chloride complex, and recovering the precious metal from the leach solution.
    Type: Application
    Filed: October 26, 2001
    Publication date: October 24, 2002
    Inventors: Christopher A. Fleming, David Dreisinger, P. Terry O'Kane
  • Oxidative pressure leach recovery using halide ions
    Patent number: 6315812
    Abstract: A method for recovering a precious metal from a host material, comprises the steps of subjecting the host material to an oxidative pressure leach process, in the presence of a halide ion constituent which is reactive with the precious metal, and at a temperature sufficient to cause at least a portion of the precious metal to be extracted by a leach solution; and recovering the precious metal from the leach solution.
    Type: Grant
    Filed: April 28, 1999
    Date of Patent: November 13, 2001
    Assignee: International PGM Technologies Ltd
    Inventors: Christopher A. Fleming, David Dreisinger, P. Terry O'Kane