Erich Hoffken

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Dinslaken, DE

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus for preparing binderfree hot briquettes for smelting purp...
- Patent number 4,934,665
- Issue date Jun 19, 1990
- Thyssen Stahl AG
- Erich Hoffken
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Process for preparing binderfree hot briquettes for smelting purposes
- Patent number 4,853,031
- Issue date Aug 1, 1989
- Thyssen Stahl AG
- Erich Hoffken
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Process for refining hot metal
- Patent number 4,604,138
- Issue date Aug 5, 1986
- Thyssen Stahl AG
- Erich Hoffken
- C21 - METALLURGY OF IRON
Information Patent Grant
Process and device for producing the refractory lining of metallurg...
- Patent number 4,337,897
- Issue date Jul 6, 1982
- Martin & Pagenstecher GmbH
- Erich Hoffken
- C21 - METALLURGY OF IRON
Information Patent Grant
Process and device for producing the refractory lining of metallurg...
- Patent number 4,268,543
- Issue date May 19, 1981
- Martin & Pagenstecher GmbH
- Erich Hoffken
- C21 - METALLURGY OF IRON