Herbicidal aqueous suspension
CA 1091952 A · Owner: Fisons Limited · Inventors: Haynes, Harold G.; Gillings, Christopher; Jewry, Ian C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention provides herbicidal aqueous suspensions comprising from 0.05 to 700 g/l of a substituted benzofuran herbicide of the formula:, (I), (where R1, R2, R3, R4, R5 R10, R11 and R12 are as defined in, the specification) at least 85% by weight of the particles of said compound having a diameter of less than 5 microns from 0.5 to 50 g/l, of a suspending agent (preferably a polycarboxylated vinyl polymer) and from 0.5 to 30%, based on the total content of compounds of formula I present, of a block copolymer, of ethylene oxide and propylene oxide having a reversible thickening temperature as defined in the specification of 45°C or above.
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
- Granted December 23, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 23, 1997.
- 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.