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Expired Canadian patentCanada

Formulations of water-dispersible granules and process for preparation thereof

CA 1296540 C · Owner: Deming, John Miley · Inventors: Surgant, John Melvin; Deming, John Miley

CIPO record

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Abstract From the Canadian patent

The invention herein relates to dry flowable water-dispersible granular formulations and to a process for the preparation thereof. In particular the water-dispersible granular, formulations of this invention comprise a mixture of aggregates of microcapsules of water-insoluble pesticide e.g. alachlor, or a plant growth regulant encapsulated within a polymeric shell wall and at least one other pesticide, e.g. atrazine or a salt of glyphosate which, is non-encapsulated. The water-dispersible granular formulations of the invention are prepared by mixing appropriate quantities of an aqueous dispersion of the encapsulated component, the non-encapsulated component and formulation adjuvants to form …

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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 March 3, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 3, 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.
FiledJuly 8, 1987
GrantedMarch 3, 1992
Term endedMarch 3, 2009
Patent numberCA 1296540 C
Classification (IPC)A01N25/14 +1 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedJuly 8, 1987Patent grantedMarch 3, 1992Term endedMarch 3, 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.