Stephan Zinzen

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Hamburg, DE

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Patents Grantslast 30 patents

Information Patent Grant
Active substance-containing multi-layer film of hydrophilic polymer...
- Patent number 6,780,504
- Issue date Aug 24, 2004
- Gruenenthal GmbH
- Herbert Rupprecht
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...

Patents Applicationslast 30 patents

Information Patent Application
Active substance-containing multi-layer film of hydrophilic polymer...
- Publication number 20020142036
- Publication date Oct 3, 2002
- Herbert Rupprecht
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...