Alkoxylated alkylamine quaternary surfactants for glyphosate
CA 2848165 C · Owner: Monsanto Technology Llc · Inventors: Zhu, Shawn; Hemminghaus, John; Abraham, William
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A stable aqueous liquid herbicidal concentrate comprising an ammonium salt of glyphosate and containing at least about 120 g/L glyphosate a.e. ammonium ion in a molar ratio to glyphosate between about 0.75 and about 2.5 and at least two alkoxylated quaternary alkylammonium surfactants corresponding to the formula: RR'N(+)AB where R is a straight chain or branched chain saturated or unsaturated alkyl group having from 8 to 22 carbon atoms R' is a straight or branched chain, saturated or unsaturated alkyl group having from 1 to 4 carbon atoms A is (R2O)p(R3O)q(R4O),R8 and B is (R5O)p,(R6O)q.(R7O)z'R9 where each of R2 R3, R4, R5, R6, and R7 is independently selected from the group consisting …
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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 September 23, 2005 and granted March 28, 2017. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 23, 2025.
- 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.
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.