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Frank K. Crundwell

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Patents Grantslast 30 patents

  • Information Patent Grant

    Heap leach process
    • Patent number 7,575,622
    • Issue date Aug 18, 2009
    • GeoBiotics LLC
    • Frank K. Crundwell
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Grant

    Recovery of nickel from nickel bearing sulphide minerals by bioleac...
    • Patent number 6,733,567
    • Issue date May 11, 2004
    • Billiton Intellectual Property, B.V.
    • David William Dew
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...

Patents Applicationslast 30 patents