Alain Sonntag

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Maurepas, FR

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Patents Grantslast 30 patents

Information Patent Grant
Method of obtaining copper from copper-bearing ores
- Patent number 4,023,964
- Issue date May 17, 1977
- Societe Miniere et Metallurgique de Penarroya
- Jean-Michel Demarthe
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Method of obtaining copper from sulphurized concentrates
- Patent number 4,016,056
- Issue date Apr 5, 1977
- Societe Miniere et Metallurgique de Penarroya
- Jean-Michel Demarthe
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Method for selectively dissolving non-ferrous metals contained in p...
- Patent number 3,998,628
- Issue date Dec 21, 1976
- Societe Miniere et Metallurgique de Penarroya
- Louis Gandon
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...