Substituted arylalkyl uracils
CA 2292475 A1 · Owner: Drewes, Mark Wilhelm · Inventors: Drewes, Mark Wilhelm; Dollinger, Markus; Andree, Roland
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to substituted arylalkyl uracils of general formula (I) in which A is a straight-chain or branched alkane dyil Ar is a substituted , phenyl or naphthyl both of which are optionally substituted R1 is a , hydrogen, amino or an optionally substituted alkyl R2 is a cyano, carboxy, carbamoyl, thiocarbamoyl or an optionally substituted alkoxycarbonyl and R3 , is hydrogen, a halogen or alkyl. The invention also relates to a method for producing said compounds and their use as herbicides.
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 25, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 25, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 25, 2020.
- 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.