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Expired Canadian patentCanada

(z)-3-dodecen-1-o1 (e)-2-butenoate and its use in monitoring and controlling the sweetpotato weevil

CA 1306263 C · Owner: Proshold, Frederick I. · Inventors: Heath, Robert R.; Proshold, Frederick I.; Tumlinson, James H. Iii

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Abstract From the Canadian patent

A pheromonal compound produced by the sweetpotato weevil has been identified as (Z)-3-dodecen-1-ol (E)-2-butenoate. The synthetically-prepared compound demonstrates activity toward the sweetpotato weevil comparable to or greater than that of the natural female and comparable to that of its natural counterpart under field conditions. The novel compound provides a sensitive tool for detection of the sweetpotato weevil. By attracting adult weevils to field traps this compound provides a means for monitoring and controlling this major agricultural pest.

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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 11, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 11, 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.
FiledMarch 18, 1988
GrantedAugust 11, 1992
Term endedAugust 11, 2009
Patent numberCA 1306263 C
Classification (IPC)C07C69/56 +1 more

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedMarch 18, 1988Patent grantedAug 11, 1992Term endedAug 11, 2009

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