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Expired Canadian patentCanada

Synergistic herbicidal compositions comprising 2-2-chloro-3-(2,2,2-trifluoroethoxymethyl)-4-methylsulfonylbenzoylcyclohexane-1,3-dione and at least one further herbicide

CA 2708345 C · Owner: Bieringer, Hermann · Inventors: Kraehmer, Hansjoerg; Hacker, Erwin; Bieringer, Hermann

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Abstract From the Canadian patent

Herbicidal compositions comprising: (A) 2-2-chloro-3-(2,2,2trifluoroethoxymethyl)-4-methylsulfonylbenzoylcyclohexane-1,3-dione or an agriculturally acceptable salt thereof; and (B) at least one of the compounds (2,4-dichlorophenoxy)acetic acid (2,4-D) clopyralid or fluroxypyr, wherein , the weight ratio of (A):(B) is 1:2000 to 2000:1, against monocotyledonous and/or dicotyledonous , harmful plants are described. The activity of these compositions is superior to that of , the herbicides applied individually.

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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

  • Filed November 25, 2002 and granted November 5, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 25, 2022.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 25, 2024.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 25, 2002
GrantedNovember 5, 2013
Term endedNovember 25, 2022
Patent numberCA 2708345 C
Classification (IPC)A01N41/10 +2 more

Timeline

Timeline From CIPO dates

2003200520072009201120132015201720192021Application filedNov 25, 2002Patent grantedNov 5, 2013Term endedNov 25, 2022

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