Canadian application, no grantCanada
5,6,7-trinor-4, 8-inter-m-phenylene pgi2 derivative and medicine containing the same
CA 2312252 A1 · Owner: Yamada, Naohiro · Inventors: Wakita, Hisanori; Ishigaki, Takeshi; Hatakeyama, Hitoshi
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides novel PGI2 derivatives and an anti Helicobacter agent, a platelet function potentiating agent or a cervical ripening agent containing any of the derivatives.
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 June 22, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 22, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 22, 2022.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 22, 2000
GrantedNo grant recorded
Term endedJune 22, 2020
Patent numberCA 2312252 A1
Classification (IPC)C07D307/93 +2 more
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.