Ralf Waldmann

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Ruscheid, DE

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Patents Grantslast 30 patents

Information Patent Grant
Process for treating the surface of material of high-grade steel
- Patent number 5,840,173
- Issue date Nov 24, 1998
- Keramchemie GmbH
- Ralf Waldmann
- C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information Patent Grant
Method of producing a cold-rolled strip in one pass
- Patent number 5,759,307
- Issue date Jun 2, 1998
- Keramchemie GmbH
- Heinz Berger
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...