Substituted 1,3,4-thiadiazolinones, processes for their preparation, and their use for combating endoparasites
CA 2026700 A1 · Owner: Harder, Achim · Inventors: Lindner, Werner; Muller, Nikolaus; Bonse, Gerhard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Substituted 1,3,4-thiadiazolinones of the formula (I), (I), in which, X represents O or S R1 represents hydrogen, alkyl, alkoxy, alkylthio halogen, halogenoalkyl, halogenoalkoxy or halogenoalkylthio R2 represents one or more identical or different radicals from the series comprising hydrogen alkyl, alkoxy, alkylthio, halogenoalkyl halo-, genoalkoxy, halogenoalkylthio, alkylenedioxy halogenoalkylenedioxy, halogen, CN, NO2 NH2, alkylamino, dialkylamino, alkylcarbonyl carb-, alkoxy, alkylsulphonyl, arylsulphonyl sulph-, amoyl, alkylsulphamoyl, dialkylsulphamoyl aryl, aryloxy and arylthio, each of which can in turn, be substituted as well, and, R3 represents alkyl alkenyl or alkynyl, each of, …
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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 2, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 2, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 2, 2012.
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Timeline
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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.