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Expired Canadian patentCanada

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

CA 1320963 C · Owner: Watanabe, Takeo · Inventors: Watanabe, Takeo; Ichinose, Isao; Kubota, Yoshikazu

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Abstract From the Canadian patent

43 -, ABSTRACT OF THE DISCLOSURE:, Disclosed herein is a 4,5-dihydro-1H-1,2,4triazole-3-carboxamide derivative represented by the formula (I):, (I), wherein R represents a straight-chain alkyl group having 1 to 10 carbon atoms which is non-substituted or substituted with 1 to 19 fluorine atoms or a branched alkyl group having 3 to 10 carbon atoms which is non-substituted or substituted with 1 to 19 fluorine atoms; X1 represents a halogen atom or an alkyl group having 1 to 3 carbon atoms; X represents hydrogen atom, a halogen atom or an alkyl group having 1 to 3 carbon atoms; Y1 represents hydrogen atom or fluorine atom; and Y2 represents hydrogen atom or fluorine atom. The derivatives of …

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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 August 3, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 3, 2010.
  • 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 25, 1988
GrantedAugust 3, 1993
Term endedAugust 3, 2010
Patent numberCA 1320963 C
Classification (IPC)C07D249/10 +1 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedMarch 25, 1988Patent grantedAug 3, 1993Term endedAug 3, 2010

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