Bernd Hupfeld

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Speyer, DE

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Patents Grantslast 30 patents

Information Patent Grant
Preparation of 2-(4-hydroxyphenoxy) propionates
- Patent number 5,886,209
- Issue date Mar 23, 1999
- BASF Aktiengesellschaft
- Thomas Wettling
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Azo dyes and process of dyeing with azo dyes which contain an N-(hy...
- Patent number 5,389,110
- Issue date Feb 14, 1995
- BASF Aktiengesellschaft
- Johannes P. Dix
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Preparation of polyaryl ethers with nitrogen compound catalysts
- Patent number 5,298,592
- Issue date Mar 29, 1994
- BASF Aktiengesellschaft
- Alexander Aumueller
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Preparation of aromatic carbonyl or sulfonyl compounds with an aryl...
- Patent number 5,256,826
- Issue date Oct 26, 1993
- BASF Aktiengesellschaft
- Erwin Hahn
- 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