1-trifluoromethylphenyl-2-phenyliminopyrrolidines and their use as herbicides
CA 2006544 A1 · Owner: Woolard, Frank X. · Inventors: Woolard, Frank X.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A HERBICIDES, ABSTRACT OF THE DISCLOSURE 1-Trifluoromethylphenyl-2-(substituted phenyl)imino pyrrolidines of the formula, in which R is H halogen, or C1-C4 alkyl; R is CF2, CH3 CF2CHF2, OCF2CHF2, OCHF2, OCF3, SCH3, S(O)CH3 SO2CH3, methoxyiminomethyl, methoxyimino-1-ethyl benzoyloxyiminomethyl, and benzoyloxyimino-1-ethyl; and X and Y are independently H, halogen CN or CF3, are, useful as herbicidal agents.
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 December 22, 1989. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 22, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 22, 2011.
- 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.