Eva A. Vosahlo

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Fort Saskatchewan, CA

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Patents Grantslast 30 patents

Information Patent Grant
Removal of selenium from sulphate solutions
- Patent number 4,222,999
- Issue date Sep 16, 1980
- Sherritt Gordon Mines Limited
- Donald R. Weir
- 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...