Certain 2-(2-substituted benzoyl)-1,3- cyclohexanediones
CA 1258869 A · Owner: Zeneca Inc. · Inventors: Michaely, William J.; Kraatz, Gary W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
CERTAIN 2-(2-SUBSTITUTED BENZOYL)-1,3-CYCLOHEXANADIONES Abstract of the Invention, Compounds having herbicidal activity and the structural formula wherein R and R1 are hydrogen, C1-C4 alkyl RaOC(O)-, where Ra is C1-C4, alkyl; R2 is chlorine bromine, iodine or C1-C4 alkoxy; and R3 R4 and R5, independently are hydrogen or an aliphatic group are disclosed.
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 August 29, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 29, 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.