Helmut Knuppel

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Sulzbach-Rosenberg, DE

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Patents Grantslast 30 patents

Information Patent Grant
Tuyere for the injection of reaction gas
- Patent number 4,249,719
- Issue date Feb 10, 1981
- Eisenwerk-Gesellschaft Maximilianshutte mbH
- Helmut Knuppel
- C21 - METALLURGY OF IRON
Information Patent Grant
Method for supplying thermal energy to steel melts
- Patent number 4,123,259
- Issue date Oct 31, 1978
- Eisenwerk-Gesellschaft Maximilianshutte mbH
- Helmut Knuppel
- C21 - METALLURGY OF IRON