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Expired Canadian patentCanada

Herbicide composition and process

CA 1303375 C · Owner: Ici Americas Inc. · Inventors: Mostafa, Mohamed A.

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

Abstract of the Invention, An improved herbicide composition comprising: (a) from about 10 to about 60 percent 1-m-trifluoromethylphenyl-3-chloro-4-chloromethyl-2pyrrolidone; (b) from about 1 to about 10 percent aluminum oxide/magnesium oxide wherein the mole ratio of aluminum oxide to magnesium oxide ranges from about 1:1 to about 1:2, or a polyamide; (c) from about 5 to about 15 percent high surface area silica; (d) from about 15 to about 40 percent amine treated bentonite; (e) from about 1 to about 10 percent dispersant; (f) from about 1 to about 10 percent wetting agent; and (g) from about 1 to about 10 percent urea.

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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 16, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 16, 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.
FiledJune 29, 1987
GrantedJune 16, 1992
Term endedJune 16, 2009
Patent numberCA 1303375 C
Classification (IPC)A01N43/36 +1 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedJune 29, 1987Patent grantedJune 16, 1992Term endedJune 16, 2009

Sources & verification

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