Patents Represented by Attorney, Agent or Law Firm Wyatt Gerbert & O Rourke
  • 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