P

Inventor

KREBS ANDREAS

DE49 patents
⚠️ This page may combine multiple inventors who share the name “KREBS ANDREAS”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

BAYER AG

43 patents
US4990517AFeb 5, 1991

7-(1-pyrrolidinyl)-3-quinolone- and -naphthyridonecarboxylic acid derivatives as antibacterial agents and feed additives

BAYER AG117 citations97
US5607942AMar 4, 1997

7-(1-pyrrolidinyl)-3-quinolone- and - naphthyridone-carboxylic acid derivatives as antibacterial agents and feed additives

BAYER AG73 citations96
US5358924AOct 25, 1994

3-hydroxy-4-aryl-5-oxo-pyrozoline derivatives, compositions and use

BAYER AG40 citations96
US5116836AMay 26, 1992

3-phenyl-pyrrolidine-2,4-dione derivatives having pesticidal activity

BAYER AG105 citations96
US5091537AFeb 25, 1992

Intermediates for preparing 3-aryl-pyrrolidine-2,4-diones

BAYER AG53 citations96
US5059597AOct 22, 1991

7-(4-oxa or 4-thia-2,7-diazabicyclo[3.3.0]oct-2-en-3-yl)-3-quinolone-and-naphthyridone-carboxylic acid derivatives as antibacterial agents and feed additives

BAYER AG44 citations96
US5045560ASep 3, 1991

Pesticidal tautomers of 3-aryl-pyrrolidine-2,4-diones and use thereas

BAYER AG107 citations96
US4985063AJan 15, 1991

3-aryl-pyrrolidine-2,4-diones

BAYER AG112 citations96
US5468742ANov 21, 1995

8-vinyl- and 9-ethinyl-quinolone-carboxylic acids

BAYER AG21 citations93
US5464796ANov 7, 1995

7-isoindolinyl-quinolone-carboxylic acid derivatives

BAYER AG24 citations93
US5457104AOct 10, 1995

Quinolone- and naphthyridonecarboxylic acid derivatives

BAYER AG27 citations93
US5416096AMay 16, 1995

7-(1-pyrrolidinyl)-3-quinolone carboxylic acid derivatives as antibacterial agents and feed additives

BAYER AG23 citations93
US5393729AFeb 28, 1995

3-aryl-pyrone derivatives

BAYER AG56 citations93
US5332720AJul 26, 1994

3-hydroxy-4-aryl-5-oxo-pyrazoline derivatives

BAYER AG53 citations93
US5142065AAug 25, 1992

3-aryl-pyrrolidine-2,4-diones

BAYER AG42 citations93
US5140033AAug 18, 1992

Antibacterial 5-alkylquinolonecarboxylic acids

BAYER AG47 citations93
US5780394AJul 14, 1998

3-hydroxy-4-aryl-5-oxo-pyrazoline derivatives

BAYER AG25 citations92
US5739389AApr 14, 1998

Aryl carboxylic acid derivatives

BAYER AG23 citations92
US5661110AAug 26, 1997

3-hydroxy-4-aryl-5-oxo-pyrazoline derivatives

BAYER AG23 citations92
US5480879AJan 2, 1996

Quinolonecarboxylic acids

BAYER AG34 citations92
US5186737AFeb 16, 1993

Pesticidal 3-aryl-pyrrolidine-2,4-diones

BAYER AG55 citations92
US5556979ASep 17, 1996

7-isoindolinyl-naphthyridone derivatives, compositions and anti-bacterial use thereof

BAYER AG14 citations82
US6221810B1Apr 24, 2001

3-hydroxy-4-aryl-5-oxo-pyrazoline derivatives

BAYER AG12 citations81
US5474974ADec 12, 1995

3-hydroxy-4-aryl-5-oxo-pyrazoline derivatives

BAYER AG9 citations74
US5371090ADec 6, 1994

Naphthyridonecarboxylic acid derivatives

BAYER AG12 citations74
US5312823AMay 17, 1994

7-azaisoindolinyl-quinolone-carboxylic acid derivatives

BAYER AG11 citations74
US5252734AOct 12, 1993

Antibacterial 5-alkylquinolonecarboxylic acids

BAYER AG14 citations74
US5202337AApr 13, 1993

7-(2,7-diazabicyclo[3.3.0]octyl)-3-quinoline- and -naphthyridone-carboxylic acid derivatives

BAYER AG8 citations74
US5883258AMar 16, 1999

Process for preparing 3-chlorobenzisothiazoles

BAYER AG7 citations73
US6018054AJan 25, 2000

7-isoindolinyl-quinolone derivatives and 7-isoindolinyl-naphthyridone derivatives

BAYER AG3 citations63
US5739339AApr 14, 1998

7-isoindolinyl-quinolone derivatives and 7-isoindolinyl-naphthyridone derivatives

BAYER AG2 citations63
US5723627AMar 3, 1998

Preparation of 7-(3-amino- and 3-amino-methyl-1-pyrrolidinyl)-3-quinolonecarboxylic acids and -naphthridonecarboxylic acids

BAYER AG2 citations63
US5532364AJul 2, 1996

Enantiomerically pure 2-oxa-5,8-diazabicyclo[4.3.0]nonanes and process for their preparation

BAYER AG2 citations63
US5436334AJul 25, 1995

Enantiomerically pure 2-oxa-5,8-diazabicyclo[4.3.0]nonanes and process for their preparation

BAYER AG4 citations63
US5304650AApr 19, 1994

Process for the preparation of alkyl N-(hydroxyalkyl)-carbamates

BAYER AG6 citations63
US5061712AOct 29, 1991

Preparation of 7-(3-amino- and 3-amino-methyl-1-pyrrolidinyl)-3-quinolonecarboxylic acids and -naphthyridonecarboxylic acids

BAYER AG2 citations63
US4910319AMar 20, 1990

Process for preparing 3-amino-1-benzylpyrrolidines

BAYER AG4 citations63
US4865641ASep 12, 1989

Herbicidal new thiazolyl ether and thioether derivatives

BAYER AG2 citations63
US4777283AOct 11, 1988

Process for the preparation of alkoxycarbonyl isocyanates

BAYER AG2 citations63
US6392044B1May 21, 2002

Racemization of R,S-dioxo-benzylpyrrolopiperidine

BAYER AG4 citations58
US6004956ADec 21, 1999

Enantiomerically pure 2-oxa-5,8-dizaabicyclo[4.3.0] nonanes and process for their preparation

BAYER AG1 citations52
US5648493AJul 15, 1997

Preparation of 7-(3-amino- and 3-amino-methyl-1-pyrrolidinyl)-3-quinolonecarboxylic acids and -naphthyridonecarboxylic acids

BAYER AG0 citations52
US5284855AFeb 8, 1994

7-(2,7-diazabicyclo[3.3.0]octyl)-3-quinolone-and-naphthyridonecarboxylic acid derivatives

BAYER AG0 citations52

SAP AG

4 patents

BATREC IND AG

1 patent

LANXESS DEUTSCHLAND GMBH

1 patent