Crop-selective herbicides
CA 2271105 A1 · Owner: Horibe, Yoshimichi · Inventors: Horibe, Yoshimichi; Sato, Kazuo; Tsukiyama, Takahiro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Crop-selective herbicides prepared by mixing a first non-selective herbicidal component selected from among glyphosate glyphosine, bialaphos and , glufosinate with a second component selected from among phosphorous acid derivatives, chitosans, metal salts of isopropyl phosphate metal salts of , organic acids and so on and, if necessary, a third component such as a fungicide. By virtue of the second component the herbicides do not completely , kill weeds in spite of the action of the non-selective herbicidal component but can retard the growth of weeds, so that the herbicides are applicable to hillsides and usable as crop-selective herbicides reduced in the chemical damage to useful …
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 November 6, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 6, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 6, 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.