Cyclohexenone oxime ether metal salts
CA 2238377 C · Owner: Rang, Harald · Inventors: Bratz, Matthias; Westphalen, Karl-Otto; Benoit, Remy
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to herbicidally active cyclohexenone oxime ether metal salts of formula (I), in which Rn is C1-Cn-alkyl and Rb is the equivalent of an alkali metal, an alkaline earth metal or a transition metal. The claimed salts have particularly good properties with respect to storage stability and temperature stability, susceptibility to moisture or biological action.
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
- Filed November 28, 1996 and granted March 18, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 28, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 28, 2018.
- 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.