Bis-cyclohexane-1,3-dione derivatives
CA 1266481 C · Owner: Ici Australia Limited · Inventors: Watson, Keith Geoffrey
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Bis-Cyclohexane-1,3-Dione Derivatives The invention concerns novel compounds of the formula I, I, wherein:, Y is selected from phenyl furyl, thienyl and pyrrolyl, rings (each optionally substituted by group X) option-, ally branched alkylene or alkylenethio(oxy)alkylene; X which may be the same or different are independently selected from halogen, nitro, alkyl, substituted alkyl, hydroxy, alkoxy, carboxy, alkoxycarbonyl alkylthio, sulfamoyl, substituted sulfamoyl amino, substituted amino and alkanoyl; R1 is selected from hydrogen, acyl and an inorganic or organic cation;, R2 is selected from alkyl substituted alkyl, alkenyl, haloalkenyl and alkynyl; R3 is selected from alkyl; and, R4 is …
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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
- Granted March 6, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 6, 2007.
- 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.