1,2,3-thiadiazole derivatives or salts thereof and agrohorticultural disease controller and method for using the same
CA 2268129 C · Owner: Sampei, Osamu · Inventors: Takagi, Kazuhiro; Tsubata, Kenji; Nishiguchi, Tsutomu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
1,2,3-Thiadiazole derivatives of general formula (I) and salts thereof disease controlling agents containing the derivatives or salts as the active ingredients, and a method for the use of the same wherein R1 is H, C1-C4 (halo)alkyl, a 5- or 6-membered heterocyclic group containing 1 to 3 heteroatoms which may be the same or different from each other and are selected from among O, N and S or the like; A is, (a),(b),(c),(d) (wherein R2 and R3 are each H halogeno, cyano, formyl, alkylthio alkoxycarbonyl substituted or unsubstituted phenyl or the like, or alternatively R2 and R3 may be united to form a C2-C6 alkylene which is optionally interrupted by -O- -S(O)n- (wherein n is, 0 to 2), -CO- …
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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 29, 1997 and granted March 11, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 29, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 29, 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.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.