TREA

Joseph G. Day

Follow

Person

  • Holmer Green, GB
People

Patents Grantslast 30 patents

  • Information Patent Grant

    Recovery of platinum group metals from scrap and residues
    • Patent number 4,451,290
    • Issue date May 29, 1984
    • Matthey Rustenburg Refiners (Proprietary) Limited
    • John Hill
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Grant

    Recovery of precious metals from leach residues
    • Patent number 4,448,604
    • Issue date May 15, 1984
    • Matthey Rustenburg Refiners (Pty) Limited
    • Joseph G. Day
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Grant

    Process for the recovery of platinum group metals from refractory c...
    • Patent number 4,428,768
    • Issue date Jan 31, 1984
    • Johnson Matthey & Co., Limited
    • Joseph G. Day
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Grant

    Recovery of platinum group metals, gold and silver from scrap
    • Patent number 4,427,442
    • Issue date Jan 24, 1984
    • Johnson Matthey Public Limited
    • Joseph G. Day
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Grant

    Yttrium containing alloys
    • Patent number 4,244,736
    • Issue date Jan 13, 1981
    • Johnson, Matthey & Co., Limited
    • Joseph G. Day
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Grant

    Production of yttrium
    • Patent number 4,177,059
    • Issue date Dec 4, 1979
    • Johnson, Matthey & Co., Limited
    • Joseph G. Day
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Grant

    Extraction of metals
    • Patent number 4,135,923
    • Issue date Jan 23, 1979
    • Johnson, Matthey & Co., Limited
    • Joseph G. Day
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...