Expired Canadian patentCanada
Process and intermediates for the preparation of (1r,2s,5s)-6,6-dimethyl-3-azabicyclo3,1,0hexane-2-carboxylates or salts thereof
CA 2526635 C · Owner: Chen, Minzhang · Inventors: Kwok, Daw-Iong; Raghavan, Ramani R.; Park, Jeonghan
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In one embodiment, the present application relates to a process of making a compound of Formula (I); and to certain intermediate compounds that are made within the process of making the compound Formula (I).
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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 June 15, 2004 and granted June 5, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 15, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 15, 2026.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 15, 2004
GrantedJune 5, 2012
Term endedJune 15, 2024
Patent numberCA 2526635 C
Classification (IPC)C07D209/52 +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.