7-(3-aryl-1-piperazinyl)- and 7-(3-cyclohexyl-1- piperazinyl)-3-quinolonecarboxylic acids
CA 1248954 A · Owner: Bayer Aktiengesellschaft · Inventors: Petersen, Uwe; Zeiler, Hans-Joachim; Metzger, Karl G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to new 1-cyclopropyl-1,4dihydro-4-oxo-3-quinolinecarboxylic acids processes for their, preparation and antibacterial agents and feed additives containing them. The new compounds have the formula: in which, R1 denotes hydrogen, straight-chain or branched alkyl which has 1 to 4 carbon atoms and is optionally substituted by hydroxyl, methoxy, amino dimethylamino, halogen, cyano or alkoxycarbonyl having 1 or 2 carbon atoms in the alkyl moiety oxoalkyl having up to 4 carbon atoms, phenacyl or, acyl having 1 to 4 carbon atoms, R2 denotes phenyl or cyclohexyl which are each optionally singly to triply substituted by halogen methyl, phenyl, cyano, hydroxyl, methoxy benzyloxy, …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted January 17, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 17, 2006.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.