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Expired Canadian patentCanada

Coating of pesticide with sulfonated polymers

CA 1329759 C · Owner: Thaler, Warren Alan · Inventors: Drake, Evelyn Nobles; Duvdevani, Ilan; Pasternak, Israel Szabsaj

CIPO record

Overview

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

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Abstract From the Canadian patent

A pesticide composite composed of a substrate including a pesticide; and at least one film of sulfonated polymer coating at least a portion of a surface of the substrate. A method of producing a coated pesticide composite involving providing a substrate including a pesticide; and coating at least one surface of the substrate with a film of sulfonated polymer dissolved in a solvent system including an organic liquid.

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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 May 24, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 24, 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.
FiledOctober 17, 1988
GrantedMay 24, 1994
Term endedMay 24, 2011
Patent numberCA 1329759 C
Classification (IPC)A01N25/26 +1 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedOct 17, 1988Patent grantedMay 24, 1994Term endedMay 24, 2011

Sources & verification

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