Substituted tricyclic compounds
CA 2091690 A1 · Owner: Agouron Pharmaceuticals, Inc. · Inventors: Reich, Siegfried H.; Fuhry, Mary A. M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Compounds of formula (Q) wherein X and Y form a five- or, six-membered heterocyclic ring containing at least one nitrogen; Z is a hydrogen, halogen, carbon, oxygen or nitrogen atom; U is a carbon or nitrogen atom; n is 0 or the integer 1; V is a carbon or nitrogen atom; W is a carbon or nitrogen atom; A is in the 1- or 2-position and is a nitrogen atom, a sulfur atom or a substituted or, unsubstituted alkylene group; Ar is an aryl or heteroaryl group having one or more rings; and B is either (i) an oxygen or nitrogen atom, or a -CO- or -SO2- group any of which is linked to an, amino acid aryl group, heterocyclic group or alkyl group or, (ii) a substituted or unsubstituted alkyl group …
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 September 25, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 25, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 25, 2013.
- 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.