Triazine derivative, a method for producing the same and herbicidal composition containing the same as an active ingredient
CA 2085387 A1 · Owner: Sumitomo Chemical Co. Ltd. · Inventors: Shibata, Hideyuki; Hirata, Naonori; Saito, Kazuo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A novel triazine derivative having the formula: wherein each of R1 and R2 which may be the same or different, represents a hydrogen atom, a C1-C6 alkyl group, a C3-C6 alkenyl group, a C3-C6 alkynyl group a, halo C1-C6 alkyl group, a C1-C6 alkoxy C1-C6 alkyl group etc.; each of R3 and R4 which may be the same or different, represents a C1-C6 alkyl group a C1-C6 alkoxy, group, a halo C1-C6 alkoxy group or a halogen atom; X represents an oxygen atom or a sulfur atom; Z represents CH, N or CY4 each of Y1, Y2 and Y3 which may be the same or different, represents a hydrogen atom a halogen atom, a C1-C6 alkyl group, a C1-C6 alkoxy group etc.; Y4, represents a hydroxyl group, a mercapto group a …
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 15, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 15, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 15, 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.