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Expired Canadian patentCanada

1,5-diphenyl-1h-1,2,4-triazole-3-carboxamide derivatives and herbicidal composition containing the same

CA 1338790 C · Owner: Kanda, Yoichi · Inventors: Ichinose, Isao; Kubota, Yoshikazu; Watanabe, Takeo

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Abstract From the Canadian patent

Disclosed herein are the derivative of benzyl ether represented by the formula (I), (I), which is useful as an intermediate compound of the derivatives of 1,5-diphenyl-1H-1,2,4- triazole-3carboxamide represented by the formula (II) (II), wherein R is a straight-chain alkyl group having 1 to 10 carbon atoms which is non-substituted or substituted with 1 to 19 fluorine atoms, a branched alkyl group having 3 to 10 carbon atoms which is non-substituted or substituted with 1 to 19 fluorine atoms a cyclic alkyl, group having 3 to 10 carbon atoms an alkyl group having, 1 to 3 carbon atoms which is substituted with an alicyclic structure having 3 to 7 carbon atoms a phenyl, group or an aralkyl …

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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 10, 1996. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 10, 2013.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 8, 1988
GrantedDecember 10, 1996
Term endedDecember 10, 2013
Patent numberCA 1338790 C
Classification (IPC)C07C205/34 +1 more

Timeline

Timeline From CIPO dates

198919921995199820012004200720102013Application filedMarch 8, 1988Patent grantedDec 10, 1996Term endedDec 10, 2013

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