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Marl, DE
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last 30 patents
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Patent Grant
Superabsorbent polymer made from acrylic acid
Patent number
7,964,689
Issue date
Jun 21, 2011
Evonik Stockhausen GmbH
Stefan Nordhoff
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Continuous process for the production and purification of acrylic acid
Patent number
7,803,969
Issue date
Sep 28, 2010
Evonik Stockhausen GmbH
Stefan Nordhoff
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Method and device for purifying substances by means of crystallization
Patent number
6,664,419
Issue date
Dec 16, 2003
Stockhausen GmbH & Co. KG
Guenther Bub
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for the production of 4,4'-diamino-dicyclohexylmethane with...
Patent number
5,196,594
Issue date
Mar 23, 1993
Miles, Inc.
George H. Schmelzer
C07 - ORGANIC CHEMISTRY
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last 30 patents
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Patent Application
SUPERABSORBENT POLYMER MADE FROM ACRYLIC ACID
Publication number
20110028664
Publication date
Feb 3, 2011
Evonik Stockhausen GmbH
Stefan Nordhoff
C07 - ORGANIC CHEMISTRY
Information
Patent Application
Continuous process for the production and purification of (meth) ac...
Publication number
20040116741
Publication date
Jun 17, 2004
Stefan Nordhoff
C07 - ORGANIC CHEMISTRY