James E. Hoffmann

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South Plainfield, NJ, US

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Patents Grantslast 30 patents

Information Patent Grant
Process for reducing Zn consumption in zinc electrolyte purification
- Patent number 4,439,288
- Issue date Mar 27, 1984
- Exxon Research and Engineering Company
- James E. Hoffmann
- C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information Patent Grant
Dead roast-oxide flash reduction process for copper concentrates
- Patent number 4,421,552
- Issue date Dec 20, 1983
- Exxon Research and Engineering Co.
- James E. Hoffmann
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Energy efficient self-regulating process for winning copper from aq...
- Patent number 4,367,128
- Issue date Jan 4, 1983
- Exxon Research and Engineering Co.
- John S. Batzold
- C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR