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Expired Canadian patentCanada

Imidazole-5-carboximidates, their preparation and their use as fungicides

CA 1332420 C · Owner: Shell Canada Limited · Inventors: Wells, Nicholas Secker; Pettman, Roger Bruce

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Abstract From the Canadian patent

IMIDAZOLE-5-Carboximidates THEIR PREPARATION AND THEIR USE AS FUNGICIDES, The invention provides imidazole derivatives of the general formula I :-, I, or a salt thereof, in which R represents an optionally substituted phenyl group, R represents an optionally substituted alkyl, cycloalkyl, alkenyl aryl or Aralkyl group, R2 represents an optionally substituted alkynyl group and Y represents an oxygen or sulphur atom or a group - NR-3 where R3 represents a hydrogen atom or an optionally substituted alkyl group; processes for their preparation and their use as fungicides.

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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 October 11, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 11, 2011.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 8, 1987
GrantedOctober 11, 1994
Term endedOctober 11, 2011
Patent numberCA 1332420 C
Classification (IPC)C07D233/90 +1 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedJuly 8, 1987Patent grantedOct 11, 1994Term endedOct 11, 2011

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