Herbicides
CA 2127624 A1 · Owner: Haylor, Barry D. G. · Inventors: Haylor, Barry D. G.; Smith, Philip H. G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention provides compounds of formula: wherein R and R1 independently represent hydrogen optionally halogenated allyl alkenyl or alkynyl; -(-CR3R4)n-(optionally substituted phenyl); -(-CR3R4)nHet; or -(-CR3R4)n-Ar, wherein Ar is an optionally substituted bicycle; wherein at least one of the groups R and R1 represents -(-CR3R4)n-Ar;, R2 represents R5 or optionally substituted phenyl; X is oxygen or sulphur; m is 0, 1, 2 or 3; R3 and R4, independently represent hydrogen allyl or, haloalkyl;, R5 is halogen, optionally halogenated alkyl alkenyl or alkynyl;, or a group selected from cyano nitro, -CO2R6, -S(O)pR6, -NR3R4, -COR6 -S(O)pR7, -CO2R7, -OR7, -CONR3R4, -OSO2R7 -OSO2R8, -OCH2R7, …
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 July 8, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 8, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 8, 2016.
- 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.