New amidinobenzylamine derivatives and their use as thrombin inhibitors
CA 2355792 A1 · Owner: Inghardt, Tord · Inventors: Nystrom, Jan-Erik; Inghardt, Tord
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There is provided compounds of formula (I) wherein R1 R2 Y, R3 and R4 have , meanings given in the description which are useful as or as prodrugs of, competitive inhibitors of trypsin-like proteases such as thrombin, and in , particular in the treatment of conditions where inhibition of thrombin is required (e.g. thrombosis) or as anticoagulants.
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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 January 13, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 13, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 13, 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.
Timeline
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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.