Heterocyclic derivatives as inhibitors of factor xa
CA 2362392 A1 · Owner: Astrazeneca Ab · Inventors: Caulkett, Peter William Rodney
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to heterocyclic derivatives or pharmaceutically-, acceptable salts thereof of formula (I) wherein: A is an optionally substituted 5- or 6-membered monocyclic aromatic ring containing 1 2 or 3 , ring heteroatoms selected from oxygen nitrogen and sulphur atoms; which , possess antithrombotic and anticoagulant properties and are accordingly useful in methods of treatment of humans or animals. The invention also relates to processes for the preparation of the heterocyclic derivatives to , pharmaceutical compositions containing them and to their use in the manufacture of medicaments for use in the production of an antithrombotic or anticoagulant effect.
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 8, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 8, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 8, 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
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.