Aminoisoquinoline derivatives
CA 2324153 A1 · Owner: Nakagawa, Tadakiyo · Inventors: Nakagawa, Tadakiyo; Kayahara, Takashi; Sagi, Kazuyuki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Aminoisoquinoline derivatives represented by formulae (I and II) analogs , thereof or pharmaceutically acceptable salts of the same. Because of having excellent inhibitory effects on activated blood coagulation factor X these , compounds are useful as active ingredients in anticoagulants or preventives/remedies for thrombosis or embolism.
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 March 17, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 17, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 17, 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.