Archibald W. Fletcher

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Tucson, AZ, US

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Patents Grantslast 30 patents

Information Patent Grant
Process for recovering a metal from an aqueous solution comprising...
- Patent number 5,196,095
- Issue date Mar 23, 1993
- Henkel Corporation
- Robert B. Sudderth
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Metal sulphide extraction
- Patent number 4,536,214
- Issue date Aug 20, 1985
- Duval Corporation
- Leonard R. Ochs
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Electron beam refinement of metals, particularly copper
- Patent number 4,518,418
- Issue date May 21, 1985
- Duval Corporation
- Archibald W. Fletcher
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...