1-arylheteroarylalkyl substituted-1h-1,2,4-triazole compounds for treatment of circulatory disorders
CA 2104795 C · Owner: G.D. Searle & Co. · Inventors: Reitz, David B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A class of 1-arylheteroarylalkyl substituted-1H-1,2,4-triazole compounds is described for use in treatment of circulatory disorders such as hypertension. Compounds of particular interest are angiotensin II antagonists of the formula (I) wherein A is selected from (1, 2, 3, 4, 5 and 6), wherein m is one; wherein R1 is selected from methyl, ethyl, n-propyl, isopropyl n-butyl, sec-, butyl, isobutyl, tert-butyl 4-methylbutyl, n-pentyl, neopentyl, phenyl benzyl, phenethyl, 2-ethylbutyl, 1,1-difluorobutyl N-, methylamido, N-methyl-N-tertbutylamido 2-methylphenyl, 2-isopropylphenyl, 2-, methoxyphenyl 2-chlorophenyl, 2,6-diflu-, orophenyl, cyclohexyl cyclohexylmethyl, 2-butenyl, 3-butenyl …
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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 April 10, 1992 and granted August 27, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 10, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 10, 2014.
- 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
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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.