4-¬4-¬4-(4-hydroxyphenyl)-1- piperazinyl phenyl -5-methyl-3h -1,2,4-triazol-3-one derivatives
CA 2076257 A1 · Owner: Mostmans, Joseph Hector · Inventors: Beetens, Johan Rene Mark; Mostmans, Joseph Hector; Heeres, Jan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
JAB 826, ABSTRACT, 4-4-4-(4-HYDROXYPHENYL)-1-PIPERAZINYLPHENYL-5-METHYL- 3H-1,2,4-TRIAZOL-3-ONE, 2-2-(4-chlorophenyl)-2-(hydroxy or oxo)ethyl-2,4-dihydro4-4-4-(4-hydroxyphenyl)-l-piperazinylphenyl-5-methyl-3H-1,2,4-triazol-3-one having the formula (I), wherein X represents C=O or CHOH, for use as 5-lipoxygenase inhibitors. Pharmaceutical compositions processes for preparing said compounds and compositions; and a method of treating leukotriene mediated diseases.
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 August 17, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 17, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 17, 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
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.