Alfred Henn

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Rodenbach, DE

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Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for the production of precision castings by ce...
- Patent number 6,443,212
- Issue date Sep 3, 2002
- Ald Vacuum Technologies AG
- Alok Choudhury
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Precision casting system with lock
- Patent number 5,503,215
- Issue date Apr 2, 1996
- Leybold Durferrit GmbH
- Ulrich Betz
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Tap closure for a vacuum-induction melting and casting furnace
- Patent number 5,372,355
- Issue date Dec 13, 1994
- Leybold Aktiengesellschaft
- Alfred Henn
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Closed induction furnace for the melting and casting of substances
- Patent number 5,343,492
- Issue date Aug 30, 1994
- Leybold Durferrit GmbH
- Alfred Henn
- F27 - FURNACES KILNS OVENS RETORTS
Information Patent Grant
Induction furnace for melting and casting substances in a nonreacti...
- Patent number 5,271,033
- Issue date Dec 14, 1993
- Leybold Durferrit GmbH
- Daniel Bethge
- F27 - FURNACES KILNS OVENS RETORTS