Selective herbicidal compositions in the form of concentrated microemulsions
CA 2078092 C · Owner: Maier, Thomas · Inventors: Maier, Thomas; Haase, Detlev; Heinrich, Rudolf
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Selective herbicidal compositions in the form of concentrated microemulsions, The invention relates to novel herbicidal compositions which comprise herbicidal active substances from the class of the phenoxyphenoxy- and heteroaryloxyphenoxycarboxylic acid derivatives, a dispersant from the class of the fatty alcohol polyoxypropylene-polyoxyethylene ethers and/or the polyoxyethylene-polyoxypropylene block copolymers, emulsifier or wetting agent from the group comprising calcium dodecylbenzenesulfonate fatty acid, polyglycol esters, the ethoxylated nonylphenols and the alkanol polyglycol ethers, organic solvents and water in, the form of microemulsions which have low viscosity and are stable …
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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 11, 1992 and granted December 9, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 11, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 11, 2014.
- 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.