Ernest George Parker

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Rossland, CA

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Patents Grantslast 30 patents

Information Patent Grant
Precipitation of chloride from zinc sulphate solution
- Patent number 4,263,109
- Issue date Apr 21, 1981
- Cominco Ltd.
- Godefridus M. Swinkels
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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
Information Patent Grant
Process for recovery of copper and zinc from complex sulphides
- Patent number 4,157,912
- Issue date Jun 12, 1979
- Cominco Ltd.
- Donald R. Weir
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Hydrometallurgical process for treating metal sulfides containing l...
- Patent number 4,082,629
- Issue date Apr 4, 1978
- Cominco Ltd.
- Edward F. G. Milner
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Process for hydrometallurgical upgrading
- Patent number 4,024,218
- Issue date May 17, 1977
- Cominco Ltd.
- Donald Roderick McKay
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Treatment of zinc plant residue
- Patent number 3,976,743
- Issue date Aug 24, 1976
- Cominco Ltd.
- Louis Landucci
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...