Dietrich Strub

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Birsfelden, CH

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Patents Grantslast 30 patents

Information Patent Grant
Saturated tetracyclic nitrogen heterocycles
- Patent number 5,204,342
- Issue date Apr 20, 1993
- Ciba-Geigy Corporation
- Wolfgang Frostl
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Hydrogenated nitrogen containing tetracycles having two nonadjacent...
- Patent number 5,135,930
- Issue date Aug 4, 1992
- Ciba-Geigy Corporation
- Wolfgang Frostl
- C07 - ORGANIC CHEMISTRY