Cyclohexenone dioxothiochromanoyl derivatives
CA 2373165 A1 · Owner: Von Deyn, Wolfgang · Inventors: Mayer, Guido; Kudis, Steffen; Langemann, Klaus
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to cyclohexenone dioxothiochromanoyl derivatives of formula (I), in which: X forms an -O-(CH2)n -chain that can be substituted or , forms a -(CH2)p - chain that can be substituted and/or interrupted by an oxygen or sulfur; n ranges from 1 to 5 and; p ranges from 2 to 6. The , invention also relates to the salts of said cyclohexenone dioxothiochromanoyl derivatives that can be used for agricultural purposes to methods and , intermediate products for producing said cyclohexenone dioxothiochromanoyl derivatives, to agents which contain the same as well as to the use of these , derivatives or of agents which contain these derivatives 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
- Filed May 3, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 3, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 3, 2022.
- 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.