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Generated: December 11, 2017

DrugPatentWatch Database Preview

Details for Patent: 4,990,517

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Summary for Patent: 4,990,517

Title: 7-(1-pyrrolidinyl)-3-quinolone- and -naphthyridonecarboxylic acid derivatives as antibacterial agents and feed additives
Abstract:7-(1-Pyrrolidinyl)-3-quinolone- and -naphthyridonecarboxylic acid derivatives as antibacterial agents and feed additives, of the formula ##STR1## in which X.sup.1 is halogen, X.sup.2 is hydrogen, halogen, amino or other radical, R.sup.1 is alkyl, cycloalkyl, optionally substituted phenyl or other radical, R.sup.2 is hydrogen, alkyl or a dioxolylmethyl radical, R.sup.3 is ##STR2## A is N, CH, C-halogen, or the like, or forms a bridge with R.sup.1, and addition products thereof.
Inventor(s): Petersen; Uwe (Leverkusen, DE), Schenke; Thomas (Bergisch-Gladbach, DE), Krebs; Andreas (Odenthal-Holz, DE), Grohe; Klaus (Odenthal, DE), Schriewer; Michael (Odenthal, DE), Haller; Ingo (Wuppertal, DE), Metzger; Karl G. (Wuppertal, DE), Endermann; Rainer (Wuppertal, DE), Zeiler; Hans-Joachim (Velbert, DE)
Assignee: Bayer Aktiengesellschaft (Leverkusen, DE)
Application Number:07/375,434
Patent Claim Types:
see list of patent claims
Compound; Composition; Dosage form; Use;

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Foreign Priority and PCT Information for Patent: 4,990,517

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
Germany3824072Jul 15, 1988
Germany3906365Mar 01, 1989

International Patent Family for Patent: 4,990,517

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Austria135354► Subscribe
Austria292127► Subscribe
Australia1028392► Subscribe
Australia2528692► Subscribe
Australia3659489► Subscribe
Australia6055694► Subscribe
Australia6055794► Subscribe
Australia616277► Subscribe
Australia650316► Subscribe
Australia658667► Subscribe
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The estimated expiration dates shown above are derived by simply adding 20 years to the priority date.
Due to the complexity of determining patent expirations even in a single country, compounded by the diversity of global patent laws, it is advisable to have patent counsel verify freedom to operate.

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Serving leading biopharmaceutical companies globally:

Federal Trade Commission
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US Army

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