Inventor · disambiguated record
Karl G. Metzger
Also filed as: METZGER KARL G · METZGER KARL GEORG · PREISS MICHAEL · SCHRODER THEO
182 granted patents·2,080 citations·filing 1973–1998
99Inventor score
Top patents by PatentIndex Score
182 records- 0199US4670444A7-amino-1-cyclopropyl-4-oxo-1, 4-dihydro-quinoline-and naphthyridine-3-carboxylic acids and antibacterial agents containing these compoundsBAYER AG·Filed 1984·Granted Jun 2, 1987·123 cites·22 claims
- 0298US4284629AProcess for the preparation of 4-pyridone-3-carboxylic acids and/or derivatives thereofBAYER AG·Filed 1979·Granted Aug 18, 1981·84 cites·18 claims
- 0397US4990517A7-(1-pyrrolidinyl)-3-quinolone- and -naphthyridonecarboxylic acid derivatives as antibacterial agents and feed additivesBAYER AG·Filed 1989·Granted Feb 5, 1991·117 cites·14 claims
- 0496US4908366AAntibacterial 8-cyano-1-cyclopropyl-1,4-dihydro-4-oxo-3-quinolinecarboxylic acidsBAYER AG·Filed 1988·Granted Mar 13, 1990·57 cites·8 claims
- 0596US4620007A6-fluoro-7-chloro-1-cyclopropyl-4-oxo-1,4-dihydro-quinoline-3-carboxylic acidBAYER AG·Filed 1985·Granted Oct 28, 1986·49 cites·1 claims
- 0696US4556658A7-Amino-1-cyclopropyl-6,8-difluoro-1,4-dihydro-4-oxo-quinoline-3-carboxylic acids and antibacterial agents containing these compoundsBAYER AG·Filed 1984·Granted Dec 3, 1985·58 cites·17 claims
- 0793US4559341AQuinolonecarboxylic acids and antibacterial agents containing these compoundsBAYER AG·Filed 1984·Granted Dec 17, 1985·30 cites·15 claims
- 0892US5140033AAntibacterial 5-alkylquinolonecarboxylic acidsBAYER AG·Filed 1990·Granted Aug 18, 1992·47 cites·3 claims
- 0992US4855283ANovel pharmaceutically active N-(2-aminoacylamido-2-deoxy-hexosyl)-amides, -carbamates and -ureasBAYER AG·Filed 1986·Granted Aug 8, 1989·93 cites·24 claims
- 1092US4009272APenicillinsBAYER AG·Filed 1975·Granted Feb 22, 1977·24 cites·60 claims
- 1191US5607942A7-(1-pyrrolidinyl)-3-quinolone- and - naphthyridone-carboxylic acid derivatives as antibacterial agents and feed additivesBAYER AG·Filed 1995·Granted Mar 4, 1997·73 cites·8 claims
- 1289US4544658A1-Cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-7-(alkyl-1-piperazinyl)quinoline-3-carboxylic acids, processes for their preparation and antibacterial agents containing themBAYER AG·Filed 1983·Granted Oct 1, 1985·32 cites·16 claims
- 1387US5480879AQuinolonecarboxylic acidsBAYER AG·Filed 1993·Granted Jan 2, 1996·34 cites·9 claims
- 1486US5059597A7-(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 additivesBAYER AG·Filed 1990·Granted Oct 22, 1991·44 cites·8 claims
- 1586US3959258AUreidoacetamido-penicillinsBAYER AG·Filed 1973·Granted May 25, 1976·15 cites·27 claims
- 1684US5051418AAntibacterial 8-cyano-1-cyclopropyl-1,4-dihydro-4-oxo-3-quinolinecarboxylic acidsBAYER AG·Filed 1989·Granted Sep 24, 1991·16 cites·6 claims
- 1784US4234572A1-N-4,6-di-O-(Aminoglycosyl)-1,3-diamino-cyclitol derivatives, processes for their preparation and their useBAYER AG·Filed 1978·Granted Nov 18, 1980·22 cites·23 claims
- 1883US4705788ANovel antibacterial 7-amino-1(substituted cyclopropyl)-1,4-dihydro-4-oxo-3-quinolinecarboxylic acidsBAYER AG·Filed 1986·Granted Nov 10, 1987·33 cites·13 claims
- 1983US4438260ASisomicin compoundsBAYER AG·Filed 1981·Granted Mar 20, 1984·21 cites·2 claims
- 2082US5464796A7-isoindolinyl-quinolone-carboxylic acid derivativesBAYER AG·Filed 1992·Granted Nov 7, 1995·24 cites·10 claims
- 2182US5284842AQuinolone- and naphthridone carboxylic acid derivatives, process for their production, antibacterial compositions and feed additives containing themBAYER AG·Filed 1992·Granted Feb 8, 1994·17 cites·4 claims
- 2282US4199572AN-Substituted amino glycoside compounds, their production, and their use as medicamentsBAYER AG·Filed 1978·Granted Apr 22, 1980·19 cites·28 claims
- 2381US5173484AQuinolone- and naphthyridone carboxylic acid derivatives, process for their production, antibacterial compositions and feed additives containing themBAYER AG·Filed 1991·Granted Dec 22, 1992·16 cites·15 claims
- 2481US4312859ASisomicin derivatives, processes for their production and their medicinal useBAYER AG·Filed 1980·Granted Jan 26, 1982·21 cites·18 claims
- 2581US4235888APseudotrissaccharides, a process for their production and their use as medicamentsBAYER AG·Filed 1979·Granted Nov 25, 1980·15 cites·12 claims
- 2680US5468742A8-vinyl- and 9-ethinyl-quinolone-carboxylic acidsBAYER AG·Filed 1993·Granted Nov 21, 1995·21 cites·10 claims
- 2780US5237060AProcess of preparing enantiomerically pure 1,8-bridged 4-quinolone-3-carboxylic acidsBAYER AG·Filed 1989·Granted Aug 17, 1993·15 cites·3 claims
- 2879US4224315APseudotrisaccharides and their medicinal useBAYER AG·Filed 1978·Granted Sep 23, 1980·16 cites·32 claims
- 2979US4200576ABeta-lactam antibioticsBAYER AG·Filed 1977·Granted Apr 29, 1980·8 cites·22 claims
- 3078US4599334A7-(3-aryl-1-piperazinyl)- and 7-(3-cyclohexyl-1-piperazinyl)-3-quinolonecarboxylic acid antibacterialsBAYER AG·Filed 1985·Granted Jul 8, 1986·23 cites·12 claims
- 3178US4416880Aβ-Lactam antibiotics and compositions containing the sameBAYER AG·Filed 1981·Granted Nov 22, 1983·18 cites·8 claims
- 3278US4190722A4,6-Di-O-(aminoglycosyl)-1,3-diaminocyclitols, process for their production and their useBAYER AG·Filed 1978·Granted Feb 26, 1980·14 cites·14 claims
- 3377US4762844AAntibacterially active alkyl-1-cyclopropyl-1,4-dihydro-4-oxo-3-quinolinecarboxylic acidsBAYER AG·Filed 1985·Granted Aug 9, 1988·21 cites·13 claims
- 3476US5416096A7-(1-pyrrolidinyl)-3-quinolone carboxylic acid derivatives as antibacterial agents and feed additivesBAYER AG·Filed 1991·Granted May 16, 1995·23 cites·11 claims
- 3574US5371090ANaphthyridonecarboxylic acid derivativesBAYER AG·Filed 1994·Granted Dec 6, 1994·12 cites·8 claims
- 3674US5077429A7-amino-1-cyclopropyl-4-oxo-1,4-dihydro-quinoline- and naphthyridine-3-carboxylic acids, processes for their preparation and antibacterial agents containing these compoundsBAYER AG·Filed 1986·Granted Dec 31, 1991·8 cites·2 claims
- 3774US4863916ASubstituted 6-hydroxymethyl-carbapenem antibioticsBAYER AG·Filed 1987·Granted Sep 5, 1989·20 cites·12 claims
- 3873US5252734AAntibacterial 5-alkylquinolonecarboxylic acidsBAYER AG·Filed 1992·Granted Oct 12, 1993·14 cites·3 claims
- 3973US4335114A1-N-Alkylsisomicin derivatives, their production and their medicinal useBAYER AG·Filed 1980·Granted Jun 15, 1982·14 cites·17 claims
- 4072US5457104AQuinolone- and naphthyridonecarboxylic acid derivativesBAYER AG·Filed 1994·Granted Oct 10, 1995·27 cites·7 claims
- 4172US5312823A7-azaisoindolinyl-quinolone-carboxylic acid derivativesBAYER AG·Filed 1992·Granted May 17, 1994·11 cites·10 claims
- 4272US4393051A1-N(Aminopolyhydroxyalkyl)aminoglycoside antibiotics and method of useBAYER AG·Filed 1980·Granted Jul 12, 1983·13 cites·12 claims
- 4372US4218451APenicillins and their useBAYER AG·Filed 1978·Granted Aug 19, 1980·6 cites·24 claims
- 4471US5631291ACyclopentane- and -pentene-β-amino acidsBAYER AG·Filed 1994·Granted May 20, 1997·10 cites·9 claims
- 4571US4039673APenicillins and cephalosporins and their productionBAYER AG·Filed 1975·Granted Aug 2, 1977·6 cites·12 claims
- 4671US3974142APenicillinsBAYER AG·Filed 1974·Granted Aug 10, 1976·7 cites·85 claims
- 4770US5453422AQuinolone- and naphthyridone carboxylic acid derivatives, process for their production, antibacterial compositions and feed additives containing themBAYER AG·Filed 1993·Granted Sep 26, 1995·8 cites·11 claims
- 4870US4847375AAntibacterial 1,8-bridged 4-quinoline-3-carboxylic acidsBAYER AG·Filed 1986·Granted Jul 11, 1989·9 cites·5 claims
- 4970US4757065ACephalosporinsBAYER AG·Filed 1984·Granted Jul 12, 1988·6 cites·11 claims
- 5070US4737488AImmune system-stimulating N-glycosylated ureas and carbamatesBAYER AG·Filed 1984·Granted Apr 12, 1988·13 cites·20 claims
Showing the top 50 of 182 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →