of the phosphonium (PR4) type

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Patents Grantslast 30 patents

Information Patent Grant
Process for separating tungsten from coinage metals
- Patent number 4,374,713
- Issue date Feb 22, 1983
- GTE Laboratories Incorporated
- Samuel Natansohn
- C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information Patent Grant
Removal of iron from aqueous acid solutions containing iron and copper
- Patent number 3,985,856
- Issue date Oct 12, 1976
- Continental Oil Company
- Morris A. Johnson
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
3804941
- Patent number 3,804,941
- Issue date Apr 16, 1974
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
2102103
- Patent number 2,102,103
- Issue date Dec 14, 1937
- C07 - ORGANIC CHEMISTRY