Methyl .alpha.-arylacrylates substituted by a heterocyclic radical and their use
CA 2000362 C · Owner: Kuenast, Christoph · Inventors: Neubauer, Hans-Juergen; Schuetz, Franz; Lorenz, Gisela
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Methyl .alpha.-arylacrylates substituted by a heterocyclic radical and having the general formula where R is alkyl, alkenyl, haloalkyl, cycloalkyl alkoxy, alkylcarbonyl, alkoxycarbonyl, halogen or aryl the aromatic ring being unsubstituted or substituted, Het is a five-membered heteroaromatic ring which is unsubstituted or substituted and has from one to three heteroatoms and A, is ethenylene, ethylene, methyleneoxy or methylenethio and fungicides and, pesticides containing these compounds.
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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 October 10, 1989 and granted August 21, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 10, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 10, 2011.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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.