Herbicidal compositions
CA 2045834 C · Owner: Kikkawa, Nobuyuki · Inventors: Kikkawa, Nobuyuki; Hirata, Toshihiro; Kobayashi, Izumi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Herbicidal compositions comprising as active ingredients a triazine derivative represented by general formula I: ... I, and phenoxy type herbicides represented by general formula II:, ... II, and herbicidal compositions comprising as active ingredients a triazine derivative represented by general formula I: ... I, phenoxy type herbicides represented by general formula II: ... II, and urea type herbicides represented by general formula III: ...III, By synergistic effects of the active ingredients the, herbididal compositions show a high herbididal effect at low dosage and have such a wide range of herbicidal spectrum that the compositions exhibit their high herbididal effect not only against …
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 June 27, 1991 and granted September 17, 1996. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 27, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 27, 2013.
- 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.