Dihydrobenzofuran and related compounds useful as anti-inflammatory agents
CA 2199128 C · Owner: The Procter & Gamble Company · Inventors: Janusz, John Michael; Scherz, Michael Wiard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A compound having the structure (A), wherein (a) W is -C(X')-NRR' or -NR- C(X')R'; (b) X and X' are independently O or S; (c) each Y is independently hydrogen or straight, branched or cyclic alkanyl having from 1 to about 3 carbon atoms, or the two Y's are bonded to form an alkanyl ring having from 3 to about 7 carbon atoms; (d) Z is unsubstituted branched or cyclic alkyl or , unsubstituted or alkanyl-substituted phenyl or benzyl Z having from 3 to , about 10 atoms other than hydrogen; (e) R is selected from hydrogen straight , or branched alkyl having from 1 to about 6 carbon atoms and cyclic alkyl , having from 3 to about 6 carbon atoms; and (f) R' is selected from hydrogen hydroxy, …
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 6, 1995 and granted March 20, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 6, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 6, 2017.
- 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.