Thrombin inhibitors
CA 2348530 A1 · Owner: Naylor-Olsen, Adel M. · Inventors: Lyle, Terry; Naylor-Olsen, Adel M.; Sanderson, Philip E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Compounds of the invention are useful in inhibiting thrombin and associated thrombotic occlusions having structure (I) or a pharmaceutically acceptable salt thereof, wherein b is NY1 or O; c is CY2 or N; d is CY2; e is CY1 or N; f is CY1 or N; g is CY1 or N; Y1 is hydrogen C1-4 alkyl, or halogen; Y2 is , hydrogen C1-4 alkyl, C3-7 cycloalkyl, halogen, NH2 OH or C1-4 alkoxy; A is , (II), (III), (IV) or (V); and W X, Z, R3, R4 and R5 are defined in the specification.
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 October 26, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 26, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 26, 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.