Isoxazole and isothiazole compounds that enhance cognitive function
CA 2109585 C · Owner: Carrera, George M. Jr. · Inventors: Lin, Nan-Horng; Carrera, George M. Jr.; Shue, Youe-Kong
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Selective and potent nicotinic agonists of formula (1) or pharmaceutically-, acceptable salts thereof useful in the treatment, of cognitive, neurological and mental disorders characterized by decreased cholinergic function.
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 May 28, 1992 and granted February 15, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 28, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 28, 2014.
- 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.