Hans-Dieter Behrens

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Bochum, DE

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Patents Grantslast 30 patents

Information Patent Grant
Sinterable carbon powder and method of its production
- Patent number 5,283,045
- Issue date Feb 1, 1994
- Rutgerswerke AG
- Winfried Boenigk
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Coal tar pitch and the preparation and use thereof
- Patent number 5,262,043
- Issue date Nov 16, 1993
- Rutgerswerke AG
- Winfried Boenigk
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...