Expired Canadian patentCanada
2-oxo-1-{(substituted sulfonyl)amino -carbonyl}azetidines
CA 1322006 C · Owner: E.R. Squibb & Sons, Inc. · Inventors: Breuer, Hermann
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Open the CIPO recordAbstract From the Canadian patent
GC253 Foreign, Abstract, 2-OXO-1-(SUBSTITUTED SULFONYL)AMINO- CARBONYLAZETIDINES, Antibacterial activity is exhibited by 2-azetidinones having a 3-acylamino substituted and having an activating group in the 1-position of the formula ,
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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
- Granted September 7, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 7, 2010.
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FiledJune 22, 1988
GrantedSeptember 7, 1993
Term endedSeptember 7, 2010
Patent numberCA 1322006 C
Classification (IPC)C07D401/14 +2 more
Timeline
Timeline From CIPO dates
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.