Aqueous dispersible concentrate containing linuron as active ingredient
CA 2108200 C · Owner: Maier, Thomas · Inventors: Frisch, Gerhard; Maier, Thomas
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Herbicides comprising from 1 to 50% by weight of linuron from 0.1 to 25% by weight of a mixture composed of substituted phenols and polyvinylpyrrolidone in a ratio of from 1 : 100 to 100 : 1, from 0.5 to 20% by weight of a ligninsulfonate, from 0.1 to 10% by weight of a salt of a polymerized alkylnaphthalenesulfonic acid and from 20, to 80% by weight of water.
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 October 12, 1993 and granted March 26, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 12, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 12, 2015.
- 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.