Hans Stephan

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Bensheim, DE

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Patents Grantslast 30 patents

Information Patent Grant
Process for the preparation of sterically hindered hydroxybenzylpho...
- Patent number 5,618,963
- Issue date Apr 8, 1997
- Ciba-Geigy Corporation
- Thomas Engert
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the preparation of 1-(2-hydroxyethyl)-2,2,6,6-tetrameth...
- Patent number 4,731,448
- Issue date Mar 15, 1988
- Ciba-Geigy Corporation
- Heinz Issler
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Continuous process for the preparation of alkyltin thiocarboxylic a...
- Patent number 4,554,368
- Issue date Nov 19, 1985
- Ciba-Geigy Corporation
- Rudolf Maul
- C07 - ORGANIC CHEMISTRY