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Expired Canadian patentCanada

Nitro- or cyano-derivatives of 2-imino-imidazolines and 2-imino-tetrahydropyrimidines

CA 1320202 C · Owner: Nihon Bayer Agrochem K.K. · Inventors: Tsuboi, Shinichi; Moriya, Koichi; Shibuya, Katsuhiko

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Abstract From the Canadian patent

Novel nitro- or cyano-imino compounds selected from components of the formula (I), (I), in which Y is nitro or cyano A is an optionally chloro- or, methyl- substituted ethylene or trimethylene radical and Z is for, example, cyclopropyl and the use of the novel compounds as intermediates for the production of insecticidally effective compounds.

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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 13, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 13, 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.
FiledDecember 17, 1987
GrantedJuly 13, 1993
Term endedJuly 13, 2010
Patent numberCA 1320202 C
Classification (IPC)C07D233/06 +2 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedDec 17, 1987Patent grantedJuly 13, 1993Term endedJuly 13, 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.