Expired Canadian patentCanada
Method for preparing a substituted perhydroisoindole
CA 2295992 C · Owner: Adir · Inventors: Souvie, Jean-Claude; Lecouve, Jean-Pierre; Fugier, Claude
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns a method for the industrial synthesis of a substituted perhydroisoindole of formula (I) and its pharmaceutically acceptable salts.
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 July 1, 1998 and granted September 23, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 1, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 1, 2020.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 1, 1998
GrantedSeptember 23, 2003
Term endedJuly 1, 2018
Patent numberCA 2295992 C
Classification (IPC)C07D209/44
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.