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Expired Canadian patentCanada

Fungicides

CA 1304084 C · Owner: Clough, John Martin · Inventors: Godfrey, Christopher Richard Ayles; Clough, John Martin

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

Compounds of formula (I): (I), and stereoisomers thereof, wherein X Y and Z, which are, the same or different are hydrogen, halogen, hydroxy, optionally substituted alkyl optionally substituted, alkenyl, optionally substituted aryl optionally, substituted alkynyl, optionally substituted alkoxy optionally substituted aryloxy, optionally substituted aralkyl, optionally substituted arylalkoxy optionally, substituted aryloxyalkyl, optionally substituted acyloxy optionally substituted amino, acylamino nitro, cyano, -CO2R1, -CONR2R3, or -COR4 or X and Y, when they are in, adjacent positions on the phenyl ring join to form a fused, ring, either aromatic or aliphatic optionally containing, one or …

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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 June 23, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 23, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 19, 1987
GrantedJune 23, 1992
Term endedJune 23, 2009
Patent numberCA 1304084 C
Classification (IPC)C07D241/00 +2 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedAug 19, 1987Patent grantedJune 23, 1992Term endedJune 23, 2009

Sources & verification

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