Certain 2-(2-substituted benzoyl)-1,3- cyclohexanediones
CA 1231962 A · Owner: Rhone-Poulenc Inc. · Inventors: Kraatz, Gary W.; Michaely, William J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
PR-7316B, CERTAIN 2-2(SUBSTITUTED BENZOYL)-1,3-CYCLOHEXANADIONES Abstract of the Invention, Compounds having the structural formula wherein R is C1-C6 alkyl; R1 is hydrogen C1-C6 alkyl, or, wherein Ra is C1-C4 alkyl or R and R1 together are alkylene having 3 to 6 carbon atoms; R2 is chlorine, bromine, iodine or C1-C4 aliphatic aloxy; R3 and R4 independently are hydrogen or an aliphatic group; R5 is hydrogen or C1-C6 alkyl; and R6 is hydrogen or C1-C6 alkyl; and their salts. These compounds are useful as herbicides.
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
- Granted January 26, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 26, 2005.
- 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.