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Expired Canadian patentCanada

Antibacterial compounds

CA 1264052 C · Owner: Kondo, Masahiro · Inventors: Miyake, Akio; Fujino, Masahiko; Kondo, Masahiro

CIPO record

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Abstract From the Canadian patent

A compound of the formula;, wherein R0 stands for hydrogen atom nitrogen-, containing heterocyclic group acyl group or amino-, protecting group Z stands for S, S?O, O or CH2, R4, stands for hydrogen atom methoxy group or formamido, group, R13 stands for hydrogen atom methyl group, hydroxyl group or halogen atom and A stands for an optionally substituted pyrazol-2-yl group forming a fused ring at the 1,5-position or, a physiologically or pharmaceutically acceptable salt or ester thereof. This compound is novel and has excellent 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 December 27, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 27, 2006.
  • 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 6, 1985
GrantedDecember 27, 1989
Term endedDecember 27, 2006
Patent numberCA 1264052 C
Classification (IPC)C07D519/00 +2 more

Timeline

Timeline From CIPO dates

1986198919921995199820012004Application filedJune 6, 1985Patent grantedDec 27, 1989Term endedDec 27, 2006

Sources & verification

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