Methods for the preparation of biphenyl isoxazole sulfonamides
CA 2239209 A1 · Owner: Bristol-Myers Squibb Company · Inventors: Depue, Jeffrey S.; Pendri, Yadagiri; Wang, Xuebao
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Methods for the preparation of biphenyl isoxazole sulfonamides and intermediate thereof. The present invention also relates to the novel intermediates prepared by these methods. The biphenyl isoxazole isoxazole sulfonamides prepared by the present methods are antagonists useful, inter alia, for the treatment of hypertension.
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 February 19, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 19, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 19, 2019.
- 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.