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Expired Canadian patentCanada

Antidoting herbicidal 3-isoxazolidinone compounds

CA 2098024 C · Owner: Zeneca Inc. · Inventors: Ensminger, Michael P.

CIPO record

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

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Abstract From the Canadian patent

This invention embodies compositions comprising herbicidally effective compounds corresponding to formula (I) in which R1 and R2 are independently methyl or ethyl X is H, methyl, chlorine, bromine, fluorine; Y is chlorine bromine, fluorine;, and n is 0, 1 or 2 and a non-phytotoxic antidotally effective amount of an antidote therefor selected from the group of amides of haloalkanoic acids, including oxazolidines and thiazolidines aromatic oxime derivatives, thiazole carboxylic acids and derivatives, substituted phenylpyrimidines 2-(dichloroacetyl)-2-, methyl- l,3-dioxolane and 2-(dichloromethyl)-2-thiazoline.

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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 27, 1991 and granted July 30, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 27, 2011.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 27, 2013.
  • 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 27, 1991
GrantedJuly 30, 2002
Term endedNovember 27, 2011
Patent numberCA 2098024 C
Classification (IPC)A01N43/80 +1 more

Timeline

Timeline From CIPO dates

1992199419961998200020022004200620082010Application filedNov 27, 1991Patent grantedJuly 30, 2002Term endedNov 27, 2011

Sources & verification

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