Pesticidal 3-cyano-5-alkoxy-1-arylpyrazoles
CA 2010180 C · Owner: D'Silva, Themistocles Damasceno Joaquim · Inventors: Powell, Gail Scotton; Timmons, Philip Reid; Pennicard, Richard Glyn
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention describes novel 3-cyano-4-sulfenylated-5alkoxy-1-arylpyrazoles of general formula(I) wherein typically preferred substituents are: R is C1 to C4 alkyl fully substituted by halogen; R1 is C1 to C4 alkyl; C3 to C6 alkenyl and alkynyl or aralkyl (each of which may be optionally substituted), dialkylaminocarbonyl or a group -P(=X)(Oalkyl)(Salkyl) wherein X is oxygen or sulfur; R2, R3, R5 and R6 are each hydrogen or halogen; R4 is CF3, OCF3, SCF3, SOCF3, SO2CF3; OCHF2 halogen or alkyl; and, n is 0, 1 or 2. The invention further relates to intermediates and processes make the compounds as well as to compositions thereof and to methods of control of arthopod (especially insect) …
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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 February 15, 1990 and granted April 18, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 15, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 15, 2012.
- 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.