Expired Canadian patentCanada
Isoindoline derivatives
CA 2505029 C · Owner: Toyooka, Kouhei · Inventors: Yoshimura, Masakazu; Toyooka, Kouhei; Kuriyama, Haruo
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Provided is a novel isoindoline compound of the formula (I):, (see formula I) , The compound is useful for anesthesia by inducing sedation in a mammal.
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 November 25, 2003 and granted March 20, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 25, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 25, 2025.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 25, 2003
GrantedMarch 20, 2012
Term endedNovember 25, 2023
Patent numberCA 2505029 C
Classification (IPC)C07D403/06 +2 more
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.