Josef H. Wieland

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Bad Sackingen, DE

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Patents Grantslast 30 patents

Information Patent Grant
Process for the production of 4-nitrotoluene-2-sulfonic acid
- Patent number 4,922,008
- Issue date May 1, 1990
- Ciba-Geigy Corporation
- Gottfried Seifert
- C07 - ORGANIC CHEMISTRY