Inhibiting phase separation in low viscosity water-based pesticide suspensions
CA 2271399 A1 · Owner: Bayer Corporation · Inventors: Hudson, Darrell C.; Shafer, James G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides a composition for inhibiting phase separation and the resulting non-uniform distribution of an active ingredient in low viscosity, water-based pesticide suspensions. In accordance with this invention, the composition comprises from about 0.003% to about 50% by weight of a pesticide from about 0.5% to about, 10% by weight of a wetting agent; from about 0.0% to about 0.8% by weight of a thickener; from about 0.1 % to about 0.5% of an antimicrobial agent; from about 5% to about 20% of an anti-freeze; from about 1 % to about 8% of a hydrophobic fumed silica; and from about 40% to about 95% of water. In an embodiment of the invention the hydrophobic fumed, silica …
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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 May 7, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 7, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 7, 2021.
- 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
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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.