Cyclohexenone derivatives, their manufacture and their use for controlling undesirable plant growth
CA 1281033 C · Owner: Wuerzer, Bruno · Inventors: Becker, Rainer; Schirmer, Ulrich; Keil, Michael
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Cyclohexenone derivatives of the formula, (I), where R1 is alkyl, R2 is alkyl unsubstituted or sub-, stituted alkenyl or alkynyl A is alkoxycarbonyl, carboxyl, cyano or trifluoromethyl B is hydrogen or, methyl, X is straight-chain branched or cyclic alkylene, Z is hydrogen or alkoxycarbonyl and n is 0 or 1 and salts, thereof, processes for their manufacture and their use, for combatting unwanted plant growth.
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 March 5, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 5, 2008.
- 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.