TREA

Gerald W. Toop

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  • Trail, CA
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Patents Grantslast 30 patents

  • Information Patent Grant

    Method for making low alpha count lead
    • Patent number RE33313
    • Issue date Aug 28, 1990
    • Cominco Ltd.
    • John A. Dunlop
    • 075 - Specialized metallurgical processes, compositions for use therein, cons...
  • Information Patent Grant

    Method for making low alpha count lead
    • Patent number 4,915,802
    • Issue date Apr 10, 1990
    • Comino Ltd.
    • John A. Dunlop
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Grant

    Method for making low alpha count lead
    • Patent number 4,887,492
    • Issue date Dec 19, 1989
    • Cominco Electronic Materials Inc.
    • John A. Dunlop
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Grant

    Method for slag fuming and reduction
    • Patent number 4,820,340
    • Issue date Apr 11, 1989
    • Cominco Ltd.
    • Gregory G. Richards
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Grant

    Method for making low alpha count lead
    • Patent number 4,770,698
    • Issue date Sep 13, 1988
    • Cominco Ltd.
    • John A. Dunlop
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...