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Reinhard Donges
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Bad Soden, DE
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last 30 patents
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Patent Grant
Process for the preparation and work-up of N-hydroxyalkylchitosans...
Patent number
6,090,928
Issue date
Jul 18, 2000
Clariant GmbH
Reinhard Donges
F26 - DRYING
Information
Patent Grant
Cationic unsaturated saccharides and polymers prepared therefrom, a...
Patent number
5,747,468
Issue date
May 5, 1998
Hoechst Aktiengesellschaft
Reinhard Donges
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Alkyl hydroxyalkyl cellulose ethers containing sulfoalkyl groups
Patent number
5,591,844
Issue date
Jan 7, 1997
Hoechst Aktiengesellschaft
Uwe Bartz
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Substituted Succinimides
Patent number
5,554,768
Issue date
Sep 10, 1996
Hoechst Aktiengesellschaft
Reinhard D onges
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for the purifying working-up of reaction media and/or wash...
Patent number
5,500,124
Issue date
Mar 19, 1996
Hoechst AG
Heinz Wallisch
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Process for the preparation of activated chitosans and their use in...
Patent number
5,442,048
Issue date
Aug 15, 1995
Hoechst AG
Christoph Meister
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Alkyl hydroxyalkyl cellulose ethers containing sulfoalkyl substituents
Patent number
5,395,930
Issue date
Mar 7, 1995
Hoechst AG
Uwe Bartz
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Use of carboxymethylated methyl hydroxyethyl cellulose ethers or me...
Patent number
5,372,642
Issue date
Dec 13, 1994
Hoechst Aktiengesellschaft
Uwe Bartz
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Modified cellulose ethers and the use thereof in dispersion paints
Patent number
5,302,196
Issue date
Apr 12, 1994
Hoechst Aktiengesellschaft
Christoph Meister
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Process for grinding and simultaneous drying of moist cellulose eth...
Patent number
4,979,681
Issue date
Dec 25, 1990
Hoechst Aktiengesellschaft
Reinhard Donges
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Process for the preparation of a hydrogel which is largely free fro...
Patent number
4,794,166
Issue date
Dec 27, 1988
Cassella Aktiengesellschaft
Friedrich Engelhardt
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Photopolymerizable mixture and photopolymerizable copying material...
Patent number
4,530,747
Issue date
Jul 23, 1985
Hoechst Aktiengesellschaft
Reinhard Donges
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Photopolymerizable mixture and photopolymerizable copying material...
Patent number
4,458,006
Issue date
Jul 3, 1984
Hoechst Aktiengesellschaft
Reinhard Donges
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
4-Halogeno-5-(halogenomethyl-phenyl)-oxazole derivatives, a process...
Patent number
4,371,607
Issue date
Feb 1, 1983
Hoechst Aktiengesellschaft
Reinhard Donges
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
2-(Halogenomethyl-phenyl)-4-halogeno-oxaxole derivatives, a process...
Patent number
4,371,606
Issue date
Feb 1, 1983
Hoechst Aktiengesellschaft
Reinhard Donges
C07 - ORGANIC CHEMISTRY