Selective herbicides based on arylsulphonylaminocarbonyltriazolinones
CA 2634652 C · Owner: Feucht, Dieter · Inventors: Dahmen, Peter; Feucht, Dieter; Mueller, Klaus-Helmet
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The novel herbicidally active compound combinations comprising (a) an arylsulphonylaminocarbonyltriazolinone of the formula (I) (see formula I), (in which R1, R2, R3 and R4 are each as defined in the description) and/or a salt of a , compound of the formula (1) (= "active compound of Group 1") and (b) one or more , compounds from a second group of certain known herbicides (= "active compound of , Group 2") exhibit at certain weight ratios synergistic effects and can be employed as , selective herbicides in various crops of useful plants; typical examples are active compound combinations from the Na salts of the compounds , of the formula (I) where R1 = CH3 R2 = OC3H7, R3 = COOCH3 and …
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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 10, 1997 and granted January 3, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 10, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 10, 2019.
- 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.