Dihydrobenzofuran and related compounds useful as anti-inflammatory agents
CA 2244411 A1 · Owner: Wu, Laurence Ichih · Inventors: Janusz, John Michael; Wu, Laurence Ichih
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A compound having structure (I) wherein (a) n is from about 1 to about 3; (b) X is selected from the group consisting of O S, SO, or SO2; (c) Y is , independently hydrogen or straight branched or cyclic alkyl having from 1 to about 4 carbon atoms, or the Y's are bonded together to form an alkanyl ring having from about 3 to about 7 atoms; (d) Z is hydrogen or straight branched , or cyclic alkyl having from 3 to about 10 atoms other than hydrogen; and (e) Het is a heteroaryl group comprising one or more rings each ring containing from about 5 to about 6 atoms other than hydrogen and wherein the group contains at least one heteroatom selected from O N, or S. Pharmaceutical , …
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 January 30, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 30, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 30, 2019.
- 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.