John F. Higginson

Person

  • Trail, CA

Patents Grantslast 30 patents

  • Information Patent Grant

    Leaching of metal sulphides

    • Patent number 4,192,851
    • Issue date Mar 11, 1980
    • Sherritt Gordon Mines Limited
    • Horst E. Hirsch
    • C01 - INORGANIC CHEMISTRY