Expired Canadian patentCanada
(3s)-3-amino-2-oxo-4,4-dimethyl-1-azetidinylsulfate
CA 1283924 C · Owner: E.R. Squibb & Sons, Inc. · Inventors: Slusarchyk, William A.; Dejneka, Tamara; Koster, William H.
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 compound (3S)-3-amino-2-oxo-4,4dimethyl-1-azetidinylsulfate having the formula. or a basic salt thereof, said compound having antibacterial activity.
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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 May 7, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 7, 2008.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 15, 1986
GrantedMay 7, 1991
Term endedMay 7, 2008
Patent numberCA 1283924 C
Classification (IPC)C07D205/08 +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.