Sulfonamide compounds and uses thereof as medicines
CA 2352871 A1 · Owner: Abe, Yoshito · Inventors: Sawada, Hitoshi; Hamashima, Hitoshi; Oku, Teruo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Sulfonamide compounds represented by general formula (I) or salts thereof; , and drug compositions containing the same (wherein each symbol is as defined in the description). These compounds serve as preventive or therapeutic agents efficacious against diseases which can be cured through decrease in blood sugar level and those which can be cured through inhibition of cGMP-PDE relaxation of smooth muscle, bronchodilation vasodilation, inhibition of , smooth muscle fiber or inhibition of allergy.
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 December 1, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 1, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 1, 2021.
- 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.