Daniel M. Lewis

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Salt Lake City, UT, US

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Patents Grantslast 30 patents

Information Patent Grant
Recovering copper from a copper-bearing source
- Patent number 4,359,376
- Issue date Nov 16, 1982
- Envirotech Corporation
- Frank A. Baczek
- C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information Patent Grant
Recovering copper from a copper-bearing source
- Patent number 4,290,865
- Issue date Sep 22, 1981
- Envirotech Corporation
- Frank A. Baczek
- C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information Patent Grant
Recovering copper from chalcopyrite concentrate
- Patent number 4,256,553
- Issue date Mar 17, 1981
- Envirotech Corporation
- Frank A. Baczek
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...