Expired Canadian patentCanada
Tricyclic ¬6,5,5 /¬6,6,5 -fused oxazolidinone antibacterial agents
CA 2066191 C · Owner: Brickner, Steven Joseph · Inventors: Brickner, Steven Joseph
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 present invention involves tricyclic-fused 6-member ring oxazolidinones (6- A) and (6-B) and tricyclic-fused 5-member rine oxazolidinones (5) which are useful as antibacterial agents.
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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 2, 1990 and granted July 24, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 2, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 2, 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.
FiledNovember 2, 1990
GrantedJuly 24, 2001
Term endedNovember 2, 2010
Patent numberCA 2066191 C
Classification (IPC)C07D498/04
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.