Substituted triazolinones
CA 2003208 C · Owner: Schmidt, Robert R. · Inventors: Santel, Hans-Joachim; Muller, Klaus-Helmut; Lurssen, Klaus
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Herbicidal triazolinones of the formula (see fig. I), (I), in which, R1 represents alkyl having 3 to 4 carbon atoms or, represents cyclopropyl, and, R2 represents hydrogen alkyl, alkenyl, alkinyl, halogenoalkyl halogenoalkenyl, halogenoalkinyl, cyanoalkyl hydroxyalkyl, alkoxyalkyl, alkoxy-carbonylalkyl alkoxycarbonylalkenyl, alkylamino-alkyl or dialkylaminoalkyl or represents, cycloalkyl, cycloalkylalkyl cycloalkenyl or, cycloalkenylalkyl, each of which is optionally substituted, or represents optionally substituted hetero-cyclylalkyl, or represents aralkyl aroyl, aryl, aralkyloxy or aryloxy, each of which is optionally substituted, or represents alkoxy, alkenyloxy or alkinyloxy.
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 17, 1989 and granted August 26, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 17, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 17, 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.
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.