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Gunther Ellendt
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Krefeld, DE
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last 30 patents
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Patent Grant
Process for purifying polyisocyanates and the polyisocyanates thus...
Patent number
4,774,357
Issue date
Sep 27, 1988
Bayer Aktiengesellschaft
Berthold Keggenhoff
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for the production of polyisocyanates
Patent number
4,745,216
Issue date
May 17, 1988
Bayer Aktiengesellschaft
Berthold Keggenhoff
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for the production of polyisocyanates
Patent number
4,597,909
Issue date
Jul 1, 1986
Bayer Aktiengesellschaft
Berthold Keggenhoff
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for the purification of 4,4'-diisocyanatodiphenylmethane by...
Patent number
4,414,074
Issue date
Nov 8, 1983
Bayer Aktiengesellschaft
Gunther Ellendt
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for the preparation of polyisocyanates
Patent number
4,405,527
Issue date
Sep 20, 1983
Bayer Aktiengesellschaft
Gerhard Wegener
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for the production of diisocyanatodiphenyl methane isomers...
Patent number
4,189,354
Issue date
Feb 19, 1980
Bayer Aktiengesellschaft
Gunther Ellendt
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for the preparation of polyamines
Patent number
4,147,724
Issue date
Apr 3, 1979
Bayer Aktiengesellschaft
Hartmut Knofel