Phenol ethers
CA 1072981 A · Owner: Synthelabo · Inventors: Giudicelli, Don P.R.L.; Manoury, Philippe M.J.; Cavero, Icilio A.G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention provides novel phenol ethers of the formula:, (I), in which p is an integer from 2 to 5. q is an integer from 1 to 4, m is 0, 1, 2, 3, or 4, n is 0 or 1 with the, condition that if m is 0, n is also 0 X is oxygen, sulphur, or SO2 and R is branched alkyl of 3 or 4 carbon atoms cycloalkyl of 3 or 4 carbon atoms, branched cyanoalkyl of 3 or 4 carbon atoms, phenyalkyl in which the phenyl is unsubstituted or substituted by halogen or alkoxy of 1 to 4 carbon atoms and the alkyl is branched or unbranched and has 2 to 4 carbon atoms, or acylaminoalkyl in which the acyl has 1 to 4 carbon atoms and the alkyl is branched or unbranched and has 1 to 4 carbon atoms in their racemic, and …
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
- Granted March 4, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 4, 1997.
- 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.