Compounds
CA 2035966 A1 · Owner: Ici Americas Inc. · Inventors: Bare, Thomas M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to spiroisoindolines that are antagonists at the phencyclidine receptor of the N-methyl-D-aspartate receptor complex and which are useful when such antagonism is desired such as in the treatment of neurological disorders. The invention further provides processes for preparing the spiroisoindolines intermediates useful for their synthesis pharmaceutical compositions, containing them and methods for their use.
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 February 7, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 7, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 7, 2013.
- 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.