Cyclohexenone derivatives, their preparation and their use for controlling undesirable plant growth
CA 1293513 C · Owner: Kolassa, Dieter · Inventors: Wuerzer, Bruno; Becker, Rainer; 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, where R1, R2, R3 and R4 have the meanings specified in the description, a process for their production herbicides, containing these compounds as active ingredient and a, process for controlling unwanted plants.
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 December 24, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 24, 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.