Substituted 1,3,5-triazinetriones, processes for their preparation and their use against parasitic protozoa
CA 2000234 A1 · Owner: Lindner, Werner · Inventors: Lindner, Werner; Haberkorn, Axel; Haberkorn, Axel
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Protecting against parasitic protozoa with substituted 1,3,5-triazinetriones of the formula, in which R1 represents aromatic or heteroaromatic radicals each of which is optionally substituted R2 represents H, alkyl, alkenyl, alkinyl or aralkyl, each of which is optionally substituted, R3 represents one or more identical or different radicals from the group consisting of hydrogen halogen, alkyl, halogenoalkyl, alkoxy, alkylthio, halogenoalkoxy, halogenoalkylthio cyano, alkoxycarbonyl, alkylsulphonyl and halogeno alkylsulphonyl, R4 represnts hydrogen, a straight-chain branched, or cyclic alkyl radical, alkenyl alkinyl, aralkyl or aryl, each of which is optionally substituted, and, R5 …
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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 6, 1989. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 6, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 6, 2011.
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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.