Bernd Thelen

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Leverkusen, DT

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Patents Grantslast 30 patents

Information Patent Grant
Process for the production of aromatic mononitro compounds
- Patent number 4,064,147
- Issue date Dec 20, 1977
- Bayer Aktiengesellschaft
- Bernd Thelen
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the preparation of pure 1-nitroanthraquinone
- Patent number 3,931,252
- Issue date Jan 6, 1976
- Bayer Aktiengesellschaft
- Wolfgang Auge
- C07 - ORGANIC CHEMISTRY