Werner Wykypiel

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Rodgau, DE

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Patents Grantslast 30 patents

Information Patent Grant
Process for the preparation of 2(3H)-benzothiazolones
- Patent number 5,594,145
- Issue date Jan 14, 1997
- Hoechst AG
- Klaus Forstinger
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the purification of 2-hydroxynaphthalene-6-carboxylic acid
- Patent number 4,916,257
- Issue date Apr 10, 1990
- Hoechst Aktiengesellschaft
- Helmold von Plessen
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the preparation of 2-hydroxy-(9H)-carbazole
- Patent number 4,628,106
- Issue date Dec 9, 1986
- Hoechst Aktiengesellschaft
- Otto E. Schweikert
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for preparing 1-nitrobenzene-2-alkyloxycarbonyl-5-carboxyli...
- Patent number 4,507,491
- Issue date Mar 26, 1985
- Hoechst Aktiengesellschaft
- Werner Wykypiel
- C07 - ORGANIC CHEMISTRY