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Expired Canadian patentCanada

Supersorbent material as pesticidal potentiator

CA 1330710 C · Owner: Puritch, George S. · Inventors: Mcharg, Douglas; Mason, Wenda; Puritch, George S.

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Abstract From the Canadian patent

An aqueous pesticidal composition is provided which includes a pesticidally active ingredient in admixture with a polyacrylamide supersorbent material, which may be cross-linked. The pesticidally active ingredient which may be, virtually any commonly used insecticide herbicide, or fungicide, may be present in the formulation at or below the recommended dosage of the pesticide if used alone. The supersorbent material is present at a concentration in the range of about 0.01 to 0.5 parts by weight per part by weight of formulation. The pesticidal composition of this invention displays synergistic characteristics as the supersorbent which has no independent pesticidal properties greatly …

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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 19, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 19, 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.
FiledJanuary 17, 1989
GrantedJuly 19, 1994
Term endedJuly 19, 2011
Patent numberCA 1330710 C
Classification (IPC)A01N25/10 +2 more

Timeline

Timeline From CIPO dates

19901993199619992002200520082011Application filedJan 17, 1989Patent grantedJuly 19, 1994Term endedJuly 19, 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.