Dihydropyridazinones and pyridazinones their use as fungicides and insecticides
CA 2216512 A1 · Owner: Ross, Ronald · Inventors: Shaber, Steven Howard; Szapacs, Edward Michael; Ross, Ronald
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Compounds with fungicidal and insecticidal properties having formula I (I), wherein W is , n is 0 or 1;, Y is O S, NR1, or R6;, the ring bond containing R4 and R5 is a single or double bond; X is independently selected from hydrogen halo, (C1-C4)alkyl, (C1-C4)alkoxy and -HC=CH-CH=CH- thereby forming a napthyl ring; R is independently selected from (C1-C12)alkyl and halo(C1-C12)alkyl; R1 is independently selected from (C1-C12)alkyl (C2-C8)alkenyl and aryl;, R2 is independently selected from hydrogen (C1-C12)alkyl, (C1-C12)alkoxy, halo(C1-C12)alkyl halo(C1-C12)alkoxy, hydroxy(C1-C12)alkyl (C1-C12)alkoxy(C1-C12)alkyl, (C1-C12)alkoxycarbonyl(C1-C12)alkyl (C2-C8)alkenyl, halo(C2-C8)alkenyl, …
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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 26, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 26, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 26, 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
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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.