Ethynylphenyl-containing retinoic acid derivatives
CA 1329620 C · Owner: Chandraratna, Roshantha A. S. · Inventors: Chandraratna, Roshantha A. S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Retinoid-like activity is exhibited by compounds of the formula, where n is 0-5 and A is H lower alkyl, or -COOH or ester, or amide thereof -CH2OH or an ether or ester, derivative or -CHO or an acetal derivative, or a, pharmaceutically acceptable salt.
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 May 17, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 17, 2011.
- 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.