Derivatives of 1,7' (imidazo-(1,2-a)-pyridine)5'-(6'h)ones
CA 2005547 C · Owner: Aventis Inc. · Inventors: Hibert, Marcel
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to novel derivatives of 1,7'-imidazo-1,2-apyridine5'-(6'H)ones to the method for their, preparation and to their use as anti-hypertensive anxiety, anti-depressant and anti-migraine agents and to their use as, appetite regulators useful for the treatment of anorexia and obesity.
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 December 14, 1989 and granted April 13, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 14, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 14, 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.