7-isoindolinyl-quinolone- and -naphthyridonecarboxylic acid derivatives
CA 2071677 A1 · Owner: Kunisch, Franz · Inventors: Petersen, Uwe; Haller, Ingo; Grohe, Klaus
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
7-Isoindolinyl-quinolone- and -naphthyridonecarboxylic acid derivatives, A b s t r a c t, The invention relates to new quinolone- and naphthyridonecarboxylic acid derivatives which are substituted in the 7-position by a partly hydrogenated isoindolinyl ring, processes for their preparation and antibacterial agents and feed additives containing these compounds. Le A 28 384
Read the whole patent
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
- Filed June 19, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 19, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 19, 2014.
- 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.