Rainer Friehmelt

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Koln, DE

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Patents Grantslast 30 patents

Information Patent Grant
Process for preparation of rubber mixtures containing silicon dioxide
- Patent number 8,252,853
- Issue date Aug 28, 2012
- Evonik Degussa GmbH
- Rainer Friehmelt
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Pyrogenically prepared silicon dioxide compacted to give crusts
- Patent number 7,842,269
- Issue date Nov 30, 2010
- Evonik Degussa GmbH
- Uwe Schachtely
- C01 - INORGANIC CHEMISTRY

Patents Applicationslast 30 patents

Information Patent Application
PYROGENICALLY PREPARED SILICON DIOXIDE COMPACTED TO GIVE CRUSTS
- Publication number 20100179269
- Publication date Jul 15, 2010
- Uwe Schachtely
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Process for Preparation of Rubber Mixtures Containing Silicon Dioxide
- Publication number 20100010116
- Publication date Jan 14, 2010
- Degussa GmbH
- Rainer Friehmelt
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...