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Rolf Putter
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Duesseldorf, DE
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last 30 patents
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Patent Grant
Process for the preparation of nitro-T-acid (8-nitro-naphthalene-1,...
Patent number
4,377,535
Issue date
Mar 22, 1983
Bayer Aktiengesellschaft
Reinhard Kaiser
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for the preparation of bis-(amino-phenyl)-disulphides
Patent number
4,375,562
Issue date
Mar 1, 1983
Bayer Aktiengesellschaft
Heinz U. Blank
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for the preparation of 1-amino-2-ethoxy-naphthalene-6-sulph...
Patent number
4,341,719
Issue date
Jul 27, 1982
Bayer Aktiengesellschaft
Rolf Putter
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for the preparation of naphthalene-1,3,6-trisulphonic acid
Patent number
4,180,521
Issue date
Dec 25, 1979
Bayer Aktiengesellschaft
Horst Behre
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for the preparation of 1-amino-8-naphthol-3,6-disulphonic a...
Patent number
4,178,308
Issue date
Dec 11, 1979
Bayer Aktiengesellschaft
Willi Schossler
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Process for the preparation of 1-amino-8-naphthol-3,6-disulphonic a...
Patent number
4,166,826
Issue date
Sep 4, 1979
Bayer Aktiengesellschaft
Willi Schossler
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for the preparation of 2-hydroxycarbazoles
Patent number
4,137,238
Issue date
Jan 30, 1979
Bayer Aktiengesellschaft
Friedrich Werner
C07 - ORGANIC CHEMISTRY