Gerhard Sch afer

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Heidelberg, DE

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Patents Grantslast 30 patents

Information Patent Grant
Preparation of chlorinated violanthrones or isoviolanthrones
- Patent number 5,554,774
- Issue date Sep 10, 1996
- BASF Aktiengesellschaft
- Udo Bergmann
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...