Werner Spielmann

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Kelkheim, DE

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Patents Grantslast 30 patents

Information Patent Grant
Stabilized aqueous polymer compositions and their use
- Patent number 8,962,715
- Issue date Feb 24, 2015
- Tougas Oilfield Solutions GmbH
- Friedrich Engelhardt
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Process for the manufacture of p-hydroxyphenyl-acetic acid
- Patent number 4,590,295
- Issue date May 20, 1986
- Hoechst Aktiengesellschaft
- Werner Spielmann
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the manufacture of phenylacetic acid and simple derivat...
- Patent number 4,339,594
- Issue date Jul 13, 1982
- Hoechst Aktiengesellschaft
- Werner Spielmann
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the manufacture of ketones
- Patent number 4,266,066
- Issue date May 5, 1981
- Hoechst Aktiengesellschaft
- Werner Spielmann
- C07 - ORGANIC CHEMISTRY

Patents Applicationslast 30 patents

Information Patent Application
Stabilized aqueous polymer compositions and their use
- Publication number 20100075871
- Publication date Mar 25, 2010
- Friedrich Engelhardt
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...