Isoxazoline derivative and herbicide containing the same as the active ingredient
CA 2380499 C · Owner: Kawasaki, Hiroshi · Inventors: Yoshimura, Takumi; Kaku, Kouichirou; Miyazawa, Takeshige
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The isoxazoline derivative of the present invention is represented by the following general formula I: (see formula I) , wherein Q is a group represented by -S(O)n-(CR5R6)m- (wherein n is an integer of 0 to 2, m is an integer of 1 to 3 and R5 and , R6 are a hydrogen atom, a cyano group an alkoxycarbonyl group, an alkyl group or the like); R1 and R2 are a hydrogen atom an , optionally substituted alkyl group an alkoxycarbonyl group, an , optionally substituted phenyl group or the like; R3 and R4 are a hydrogen atom, an optionally substituted alkyl group a cycloalkyl , group or the like; Y is a hydrogen atom an alkoxycarbonyl , group, a carboxyl group an alkenyl group, an optionally , …
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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 August 9, 2000 and granted January 4, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 9, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 9, 2022.
- 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.