Ralf Echterhoff

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Dormagen, DE

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Patents Grantslast 30 patents

Information Patent Grant
Production of di- and polyisocyanates of the diphenylmethane series...
- Patent number 7,205,430
- Issue date Apr 17, 2007
- Bayer MaterialScience Aktiengesellschaft
- Ulrich Liman
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Production of mixtures of diisocyanates and polyisocyanates from th...
- Patent number 7,038,002
- Issue date May 2, 2006
- Bayer MaterialScience AG
- Hans-Georg Pirkl
- C07 - ORGANIC CHEMISTRY

Patents Applicationslast 30 patents

Information Patent Application
Process for the preparation of 4,4'-diphenylmethane diisocyanate
- Publication number 20080275269
- Publication date Nov 6, 2008
- Berthold Keggenhoff
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Production of di- and polyisocyanates of the diphenylmethane series...
- Publication number 20050240054
- Publication date Oct 27, 2005
- Ulrich Liman
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Production of mixtures of diisocyanates and polyisocyanates from th...
- Publication number 20050020797
- Publication date Jan 27, 2005
- Hans-Georg Pirkl
- C07 - ORGANIC CHEMISTRY