Herbicidal compositions
CA 2430381 C · Owner: Huntsman Corporation Australia Pty Ltd · Inventors: Kirby, Andrew Francis; Martin, Ashley Scott; Griffiths, Paul Leslie
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to surfactant systems and in particular herbicidal compositions comprising a water soluble herbicide and/or a salt thereof and a surfactant system, wherein the surfactant system comprises at least two surfactants selected from the group consisting of: i) alkyldiamine tetraalkoxylate surfactants; ii) N-alkyl alkyldiamine trialkoxylate surfactants; and iii) phosphated alcohol alkoxylate surfactants.
Read the whole patent
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 30, 2001 and granted February 1, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 30, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 30, 2023.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.