Cyclohexenone derivatives
CA 1251219 A · Owner: Nippon Soda Co. Ltd. · Inventors: Ishikawa, Hisao; Kohara, Kenichi; Nakayama, Akira
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A compound having the general formula wherein R1 is alkyl having 1-3 carbon atoms; R2 is alkyl having 1-3 carbon atoms, allyl propargyl or, haloalkenyl; and, A is selected from the group consisting of wherein R3 is -SO2R6 group, group or , group; R4 is hydrogen alkyl having 1-6 carbon atoms; phenyl or halophenyl; R5 is alkyl having 1-3 carbon atoms; X is oxygen or sulfur; and n is 0 or 1; wherein R6 is alkyl having 1-6 carbon atoms, haloalkyl having 1-6 carbon atoms or propenyl; R7 is hydrogen or alkyl having 1-4 carbon atoms; R9 is hydrogen alkyl having, 1-6 carbon atoms, propenyl or methoxy; R9 is hydrogen alkyl having 1-8 carbon, atoms, haloalkyl having 1-3 carbon atoms alkoxy having 1-6 …
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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 14, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 14, 2006.
- 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.