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Odenthal, DE
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Patents Grants
last 30 patents
Information
Patent Grant
Preparation of 3-acyloxy-2-methylbenzoic acids
Patent number
6,891,060
Issue date
May 10, 2005
BayerAktiengesellschaft
Johannes Scherer
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Method for producing n-butyryl-4-amino-3-methyl-methyl benzoate and...
Patent number
6,620,962
Issue date
Sep 16, 2003
Bayer Aktiengesellschaft
Lars Rodefeld
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Method for producing 4-hydroxy-3-nitrobiphenyl
Patent number
6,610,893
Issue date
Aug 26, 2003
Bayer Aktiengesellschaft
Horst Behre
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Method for preparing methyl carbazate
Patent number
6,465,678
Issue date
Oct 15, 2002
Bayer Aktiengesellschaft
Lars Rodefeld
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for the preparation of salts of 1-substituted 2,4-diaminobe...
Patent number
6,204,413
Issue date
Mar 20, 2001
Bayer Aktiengesellschaft
Lars Rodefeld
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Preparation of N-phenyl-1-naphthylamine
Patent number
6,133,480
Issue date
Oct 17, 2000
Bayer Aktiengesellschaft
Horst Behre
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for preparing 4,6-diamino-resorcinol dihydrochloride
Patent number
6,093,852
Issue date
Jul 25, 2000
Bayer Aktiengesellschaft
Horst Behre
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for the preparation of 2-amino-5-alkyl-phenols
Patent number
5,847,217
Issue date
Dec 8, 1998
Bayer Aktiengesellschaft
Horst Behre
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for the preparation of 4-hydroxybiphenyl
Patent number
5,847,234
Issue date
Dec 8, 1998
Bayer Aktiengesellschaft
Horst Behre
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
2-(arylimino-methyl)-3-dialkylaminoacrylonitriles, a process for th...
Patent number
5,629,441
Issue date
May 13, 1997
Bayer Aktiengesellschaft
Helmut Kraus
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for the preparation of 4,6-diaminoresorcinol
Patent number
5,574,188
Issue date
Nov 12, 1996
Bayer Aktiengesellschaft
Horst Behre
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for the isolation of 2-naphthylamine-1,5-disulphonic acid
Patent number
5,248,812
Issue date
Sep 28, 1993
Bayer Aktiengesellschaft
Horst Behre
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for the preparation of 1,5-dihydroxynaphthalene and 1,5-dia...
Patent number
4,973,758
Issue date
Nov 27, 1990
Bayer Aktiengesellschaft
Horst Behre
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for the preparation of 1-aminonaphthalene-2,4,7-trisulphoni...
Patent number
4,873,026
Issue date
Oct 10, 1989
Bayer Aktiengesellschaft
Horst Behre
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for the sulphonation of aromatic compounds with sulphur tri...
Patent number
4,859,372
Issue date
Aug 22, 1989
Bayer Aktiengesellschaft
Horst Behre
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for the preparation of 1-aminonaphthalene-2,4,7-trisulphoni...
Patent number
4,836,959
Issue date
Jun 6, 1989
Bayer Aktiengsellschaft
Willi Streicher
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Tetra-alkali metal salts of chromotropic acid, a process for their...
Patent number
4,705,652
Issue date
Nov 10, 1987
Bayer Aktiengesellschaft
Erich Hammerschmidt
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for the preparation of 1-amino-8-naphthol-4,6-disulphonic a...
Patent number
4,609,503
Issue date
Sep 2, 1986
Bayer Aktiengesselschaft
Horst Behre
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for the preparation of 5-amino-2,4-dimethylacetanilide
Patent number
4,540,817
Issue date
Sep 10, 1985
Bayer Aktiengesellschaft
Horst Behre
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for the simultaneous recovery of 4-hydroxy-diphenyl and 4,4...
Patent number
4,538,007
Issue date
Aug 27, 1985
Bayer Aktiengesellschaft
Eike Gabel
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for the preparation of nitronaphthalene-sulphonic acids
Patent number
4,534,905
Issue date
Aug 13, 1985
Bayer Aktiengesellschaft
Horst Behre
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Preparation of o-nitrobenzaldehyde
Patent number
4,450,297
Issue date
May 22, 1984
Bayer Aktiengesellschaft
Michael Preiss
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for preparing 1-amino-2-naphthol-4-sulphonic acid (amidol a...
Patent number
4,427,601
Issue date
Jan 24, 1984
Bayer Aktiengesellschaft
Erich Hammerschmidt
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for isolating H acid and K acid
Patent number
4,426,334
Issue date
Jan 17, 1984
Bayer Aktiengesellschaft
Horst Behre
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for the preparation of 1-benzoylamino-8-hydroxynaphthalene-...
Patent number
4,426,333
Issue date
Jan 17, 1984
Bayer Aktiengesellschaft
Erich Hammerschmidt
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for the isolation of 1-naphthylamine-4,8-disulphonic acid
Patent number
4,407,762
Issue date
Oct 4, 1983
Bayer Aktiengesellschaft
Heinz U. Blank
C07 - ORGANIC CHEMISTRY
Information
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 naphthalene-1,3,5-trisulphonic acid
Patent number
4,369,143
Issue date
Jan 18, 1983
Bayer Aktiengesellschaft
Horst Behre
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for the isolation of 1-naphthylamine-4,6- and 1-naphthylami...
Patent number
4,348,336
Issue date
Sep 7, 1982
Bayer Aktiengesellschaft
Heinz U. Blank
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for producing the magnesium salt of 3-nitro-naphthalene-1,5...
Patent number
4,348,334
Issue date
Sep 7, 1982
Ciba-Geigy AG
Bernhard Albrecht
C07 - ORGANIC CHEMISTRY
Patents Applications
last 30 patents
Information
Patent Application
Method for producing 3-hydroxy-2-methylbenzoic acid
Publication number
20050222455
Publication date
Oct 6, 2005
Bayer Chemicals AG
Friedrich Muller-Hauck
C07 - ORGANIC CHEMISTRY
Information
Patent Application
Preparation of 3-acyloxy-2-methylbenzoic acids
Publication number
20040044243
Publication date
Mar 4, 2004
Johannes Scherer
C07 - ORGANIC CHEMISTRY
Information
Patent Application
Method for producing N-butyryl-4-amino-3-methyl-methyl benzoate and...
Publication number
20040030183
Publication date
Feb 12, 2004
Lars Rodefeld
C07 - ORGANIC CHEMISTRY
Information
Patent Application
Method for producing n-butyryl-4-amino-3-methyl-methyl benzoate and...
Publication number
20030065211
Publication date
Apr 3, 2003
Lars Rodefeld
C07 - ORGANIC CHEMISTRY
Information
Patent Application
Method for producing 4-hydroxy-3-nitrobiphenyl
Publication number
20030055294
Publication date
Mar 20, 2003
Horst Behre
C07 - ORGANIC CHEMISTRY