Bernd Gunzel

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Haltern am See, DE

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Patents Grantslast 30 patents

Information Patent Grant
Purification of a crude lactam mixture by means of melt crystalliza...
- Patent number 7,807,826
- Issue date Oct 5, 2010
- Evonik Degussa GmbH
- Axel Hengstermann
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for preparing polyarylene ether ketone
- Patent number 7,786,245
- Issue date Aug 31, 2010
- Evonik Degussa GmbH
- Alexander Richter
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for the epoxidation of cyclic alkenes
- Patent number 6,861,540
- Issue date Mar 1, 2005
- Degussa AG
- Jürgen Herwig
- C07 - ORGANIC CHEMISTRY

Patents Applicationslast 30 patents

Information Patent Application
Method for Producing Polyarylene Ether Ketones
- Publication number 20080085990
- Publication date Apr 10, 2008
- DEGUSSA GmbH
- Alexander Richter
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
PROCESS FOR PREPARING POLYARYLENE ETHER KETONES
- Publication number 20070265414
- Publication date Nov 15, 2007
- Degussa AG
- Alexander Richter
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
PROCESS FOR PREPARING POLYARYLENE ETHER KETONE
- Publication number 20070265415
- Publication date Nov 15, 2007
- DEGUSSA GmbH
- Alexander RICHTER
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Process for the epoxidation of cyclic alkenes
- Publication number 20040116722
- Publication date Jun 17, 2004
- Degussa AG
- Jurgen Herwig
- C07 - ORGANIC CHEMISTRY