Benzimidazole compounds and their use
CA 2025849 A1 · Owner: Stevens, Rodney W. · Inventors: Nakane, Masami; Stevens, Rodney W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Certain benzimidazole compounds and their pharmaceutically acceptable salts, are dual inhibitors of lipoxygenase and cyclooxygenase enzymes, and so are useful as antiallergy and antiinflammatory agenks. wherein R1 is H -NH-R3, R3, -OR3, -SR3, -alkylene-R3 or R4, R3 is carboxyl, loweralkyl, loweralkoxy loweralkoxycar-, bonyl, aryl or heterocyclic which may be substituted, R4 is aryl or heterocyclic which may be substituted, R2 is aryl or heterocyclic which may be substituted, A is H or halo and, m is an integer of 1 to 6.
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 September 20, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 20, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 20, 2012.
- 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.