Michael Stumpp

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Deidesheim, DE

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Patents Grantslast 30 patents

Information Patent Grant
Process for the preparation of bis(4-chlorophenyl) sulfone
- Patent number 5,082,973
- Issue date Jan 21, 1992
- BASF Aktiengesellschaft
- Michael Stumpp
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the preparation of bis(4-hydroxyphenyl) sulfone
- Patent number 5,072,049
- Issue date Dec 10, 1991
- BASF Aktiengesellschaft
- Michael Stumpp
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Preparation of bis(4-hydroxyphenyl)sulfone
- Patent number 5,059,715
- Issue date Oct 22, 1991
- BASF Aktiengesellschaft
- Michael Stumpp
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Preparation of bis-(4-chlorophenyl) sulfone
- Patent number 4,983,773
- Issue date Jan 8, 1991
- BASF Aktiengesellschaft
- Michael Stumpp
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Isolation of 4,4'-dichlorodiphenyl sulfone
- Patent number 4,873,372
- Issue date Oct 10, 1989
- BASF Aktiengesellschaft
- Gerhard Schaefer
- C07 - ORGANIC CHEMISTRY