Anti-inflammatory 1-heteroaryloxindole-3-carboxamides
CA 2007651 C · Owner: Pfizer Limited · Inventors: Lombardino, Joseph G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Certain N-(substituted)-1-heteroaryl-oxindole- 3-carboxamides wharein the N-substituent is thienyl furyl, phenyl or substituted phenyl, are inhibitors of cycloxygenase and lipoxygenase enzymes and are useful as anti-inflammatory agents in mammals (see fig.I) (I), (wherein R1 is thienyl furyl or 2-thiazolyl; R is, thienyl, furyl or in which X is H, F, Cl, C1-4alkyl, C1-4alkoxy C1-4alkylthio, nitro or CF3; and Y is H F or Cl;, and R3 and R4 may be the same or different and are H, F, Cl, Br, C1-4alkyl, C1-4alkoxy, C1-4alkylthio nitro of CF3).
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 January 12, 1990 and granted August 19, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 12, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 12, 2012.
- 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.