Andrea Wittkowski

Follow

Person

Gross-Umstadt, DE

People

Patents Grantslast 30 patents

Information Patent Grant
Concrete flow improvers and water reducers
- Patent number 11,447,579
- Issue date Sep 20, 2022
- Roehm GmbH
- Steffen Krill
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Glycerol (meth)acrylate carboxylic ester having a long shelf life
- Patent number 11,414,373
- Issue date Aug 16, 2022
- Evonik Operations GmbH
- Patrik Hartmann
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for manufacturing unsaturated carboxylic acid anhydrides
- Patent number 6,936,734
- Issue date Aug 30, 2005
- Roehm GmbH & Co., KG
- Bardo Schmitt
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for synthesis of Di(meth)acrylic acid esters
- Patent number 6,639,099
- Issue date Oct 28, 2003
- Roehm GmbH & Co KG
- Joachim Knebel
- C07 - ORGANIC CHEMISTRY

Patents Applicationslast 30 patents

Information Patent Application
GLYCEROL (METH)ACRYLATE CARBOXYLIC ESTER HAVING A LONG SHELF LIFE
- Publication number 20220281801
- Publication date Sep 8, 2022
- EVONIK RÖHM GMBH
- Patrik HARTMANN
- C07 - ORGANIC CHEMISTRY
Information Patent Application
CONCRETE FLOW IMPROVERS AND WATER REDUCERS
- Publication number 20210115166
- Publication date Apr 22, 2021
- ROEHM GMBH
- Steffen KRILL
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
GLYCEROL (METH)ACRYLATE CARBOXYLIC ESTER HAVING A LONG SHELF LIFE
- Publication number 20190352251
- Publication date Nov 21, 2019
- EVONIK RÖHM GMBH
- Patrik HARTMANN
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Process for manufacturing unsaturated carboxylic acid anhydrides
- Publication number 20020161260
- Publication date Oct 31, 2002
- ROEHM GMBH & CO. KG
- Bardo Schmitt
- C07 - ORGANIC CHEMISTRY