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Expired Canadian patentCanada

High-strength, low-temperature stable herbicidal formulations of 2,4-dichlorophenoxy acetic acid salts

CA 2555915 C · Owner: Corteva Agriscience Llc · Inventors: Linton, Mark Richard

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

This invention relates to a high-strength herbicidal formulation containing high concentrations of 2,4-D salt mixtures. The 2,4-D salt mixtures can include the DMA salt and the DMEA and/or the DEEA salt of 2,4-D. Selected combinations of the 2,4-D salt mixtures exhibit significantly greater low temperature stability at high concentrations.

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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 August 2, 2006 and granted May 20, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 2, 2026.
  • Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 2, 2006
GrantedMay 20, 2014
Term endedAugust 2, 2026
Patent numberCA 2555915 C
Classification (IPC)A01N37/38 +2 more

Timeline

Timeline From CIPO dates

2007200920112013201520172019202120232025Application filedAug 2, 2006Patent grantedMay 20, 2014Term endedAug 2, 2026

Sources & verification

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