Azacyclic derivatives
CA 2069423 A1 · Owner: Leurini, Lorenzo · Inventors: Leurini, Lorenzo; Colle, Roberto; Giardina, Giuseppe
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
B2871-Abs, - 66 -, Abstract, 1. A compound or a solvate or salt thereof, of formula (I):, (I), in which W, which may be attached to the same or different carbon atom as R1, is hydroxy, C1-6 alkoxy halogen, thiol, C1-6 alkylthio, hydroxy C1-6 alkyl methylidene, hydroxycarbonyl, aminocarbonyl- C1-3 alkoxycarbonyl, NHR1a, or NHCOR1a where R1a is H or C1-6 alkyl; R1 is hydrogen, halogen C1-6 alkyl or together with W forms a keto-group or a cyclic ether or thioether containing from 1 to 4 carbon atoms, A represents, or, in which each of R2 and R3 which may be attached to the, same or different carbon atom is hydrogen, C1-6 alkyl, hydroxy, thiol C1-6 alkoxy, C1-6 alkylthio or halogen; B2871-Abs, …
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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 November 20, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 20, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 20, 2012.
- 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.