3-pyridinol derivatives and their use as medicaments
CA 2124002 A1 · Owner: Smithkline Beecham P.L.C. · Inventors: Porter, Roderick Alan; Murray, Kenneth John; Prain, Hunter Douglas
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Compounds of formula (1) or a pharmaceutically acceptable salt, thereof wherein: R0 is OH or a bioprecursor thereof R1 is, A0CO2H, P(Z)(OH)(OR2), SO2H, SO3H or 5-tetrazolyl or a bioprecursor thereof, A0 is CH2, CHF, CF2 CR3(OR4), CO, or C(OR5)(OR6), are described as agonists of a cyclic AMP dependent protein kinase. They are useful as medicaments.
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 November 16, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 16, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 16, 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.