Duisburger Kupferhutte

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Duisburg, DE

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Patents Grantslast 30 patents

Information Patent Grant
Process for recovering silver and gold from chloride solutions
- Patent number 4,131,454
- Issue date Dec 26, 1978
- Duisburger Kupferhutte
- Norbert L. Piret
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Process for recovering silver from residues containing silver and lead
- Patent number 4,127,639
- Issue date Nov 28, 1978
- Duisburger Kupferhutte
- Norbert L. Piret
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Process for working up copper cementate sludges
- Patent number 4,104,055
- Issue date Aug 1, 1978
- Duisburger Kupferhutte
- Karl Lippert
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Process for recovering electrolytic copper of high purity by means...
- Patent number 4,030,990
- Issue date Jun 21, 1977
- Duisburger Kupferhutte
- Norbert L. Piret
- C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information Patent Grant
Method for processing manganese nodules and recovering the values c...
- Patent number 4,008,076
- Issue date Feb 15, 1977
- Duisburger Kupferhutte
- Helmut Junghanss
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Combined process for working up pure and complex copper concentrates
- Patent number 3,969,107
- Issue date Jul 13, 1976
- Duisburger Kupferhutte
- Karl Lippert
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...

Duisburger Kupferhutte

Organization

Patents Grantslast 30 patents

Process for recovering silver and gold from chloride solutions

Process for recovering silver from residues containing silver and lead

Process for working up copper cementate sludges

Process for recovering electrolytic copper of high purity by means...

Method for processing manganese nodules and recovering the values c...

Combined process for working up pure and complex copper concentrates

Patents Applicationslast 30 patents

Trademarklast 30 trademarks