Herbicidal composition and weeding method
CA 2108710 C · Owner: Nihon Nohyaku Co. Ltd. · Inventors: Nakatani, Motokatsu; Konno, Takamichi; Mabuchi, Tsutomu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a herbicidal composition containing as active ingredients at least one organophosphorus compound and 3-substituted phenylpyrazole derivative of the general formula (I): (see fig. I), wherein R is -Y1R3, -Y2CH(R4)CO-OR5 -COOCH(R4)CO-Y1R5, or -COOR6 (R3, R4, R5 R6, Y1 and Y2 are specified, groups), R1 is a lower alkyl group R2 is a hydrogen, atom, a lower alkyl group or a lower haloalkyl group X1, and X2, which may be the same or different are halogen, atoms, Y is -O-, -S-, -SO- or -SO2and n is zero or, 1; and a weeding method using said composition.
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 19, 1993 and granted April 28, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 19, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 19, 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.