Trisubstituted benzoic acid intermediates
CA 1270261 C · Owner: Rhone-Poulenc Basic Chemicals Co. · Inventors: Lee, David Lee
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure, Novel trisubstituted benzoic acid chloride intermediates are useful in the preparation of certain herbicidal 2-(2,3,4-trisubstituted benzoyl) -1 3-, cyclohexanediones. The benzoic acid chloride intermediates of this invention have the following formula wherein R6 is C1-C4, alkoxy or C1-C4 alkylthio; n is the integer 0 or 2; and R7 is C1-C4 alkyl.
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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 June 12, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 12, 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.