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Hermann Schindler
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Fischbach, Taunus, DE
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Patents Grants
last 30 patents
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Patent Grant
Polyvinyl acetals which can form emulsifier-free aqueous dispersion...
Patent number
5,559,175
Issue date
Sep 24, 1996
Hoechst Aktiengesellschaft
Matthias Kroggel
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Use of copolymers based on vinyl monomers and carboxylic acid amide...
Patent number
5,542,951
Issue date
Aug 6, 1996
Hoechst Aktiengesellschaft
Werner Antwerpen
C11 - ANIMAL AND VEGETABLE OILS, FATS, FATTY SUBSTANCES AND WAXES FATTY ACIDS...
Information
Patent Grant
Polyvinyl butyrals having improved thermal stability and light resi...
Patent number
5,384,346
Issue date
Jan 24, 1995
Hoechst AG
Matthas Gutweiler
B32 - LAYERED PRODUCTS
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Patent Grant
Open-cell shaped article made of acetalized polyvinyl alcohol and p...
Patent number
4,296,210
Issue date
Oct 20, 1981
Hoechst Aktiengesellschaft
Wolfgang Zimmermann
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Process for the separation of polyvinyl alcohol from aqueous solutions
Patent number
4,166,033
Issue date
Aug 28, 1979
Hoechst Aktiengesellschaft
Wolfgang Zimmermann
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Process for the manufacture of films and coatings containing polyvi...
Patent number
4,110,494
Issue date
Aug 29, 1978
Hoechst Aktiengesellschaft
Hermann Schindler
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Product and process for preparing polyvinyl alcohol deposits of red...
Patent number
4,098,969
Issue date
Jul 4, 1978
Hoechst Aktiengesellschaft
Wolfgang Zimmermann
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...