N-(pyridinylamino)isoindolines and related compounds
CA 2276203 C · Owner: Merriman, Gregory H. · Inventors: Freed, Brian S.; Kurys, Barbara E.; Fink, David M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Novel N-(pyridinylamino)isoindolines of formula (I) and related compounds intermediates and processes for the preparation thereof and methods of , relieving memory dysfunction and treating depression utilizing the N- (pyridinylamino)isoindolines and related compounds the intermediates or , compositions thereof are disclosed. Formula (I) R is hydrogen a group of the , formula R2O- wherein R2 is hydrogen loweralkyl, benzyl, a group of the , formula (R3)3Si- wherein R3 is loweralkyl or a group of the formula R4R5NCO- , wherein R4 and R5 are independently hydrogen loweralkyl or benzyl; R4 and R5 , taken together with the nitrogen atom to which they are attached form a group of formula (a) or a …
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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 13, 1997 and granted July 22, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 13, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 13, 2019.
- 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.