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Expired Canadian patentCanada

2-(fluoroalkylthio)substituted penems, processes for preparing them, and pharmaceutical compositions containing them

CA 1207753 A · Owner: Schering Corporation · Inventors: Mccombie, Stuart W.; Girijavallabhan, Viyyoor M.; Ganguly, Ashit K.

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Abstract From the Canadian patent

Compounds are disclosed having the formula (1), in which the stereochemistry is 5R,6S,8R or 5R,6R,8S A, represents a fluoroalkyl group, straight chain or branched chain, with 1 to 3 fluorine atoms on the same carbon atom which is separated from the 2-S atom by at least one carbon atom, and R is hydrogen, a pharmaceutically acceptable cation or a metabolisable ester group. The compounds have 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 July 15, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 15, 2003.
  • 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 23, 1982
GrantedJuly 15, 1986
Term endedJuly 15, 2003
Patent numberCA 1207753 A
Classification (IPC)C07D499/00 +2 more

Timeline

Timeline From CIPO dates

1983198619891992199519982001Application filedNov 23, 1982Patent grantedJuly 15, 1986Term endedJuly 15, 2003

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.