Hans-Jorg Topfer deceased

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late of Buxtehude, DE

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus for the direct reduction of iron ores
- Patent number 4,374,585
- Issue date Feb 22, 1983
- Hamburger Stahlwerke GmbH
- Gero Papst
- C21 - METALLURGY OF IRON
Information Patent Grant
Process for the direct reduction of iron ores
- Patent number 4,248,623
- Issue date Feb 3, 1981
- Hamburger Stahlwerke GmbH
- Gero Papst
- C21 - METALLURGY OF IRON
Information Patent Grant
Method of manufacturing rolled wire rod
- Patent number 4,222,257
- Issue date Sep 16, 1980
- Hamburger Stahlwerke GmbH
- Klaus Theis
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...