Dioxo-tetrahydroquinoline derivatives
CA 2043367 A1 · Owner: Baker, Raymond · Inventors: Baker, Raymond; Stevenson, Gaeme I.; Rowley, Michael
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A class of 2,4-dioxo-1,2,3,4-tetrahydroquinoline derivatives, substituted at the 3-position by a range of carbonyl-containing substituents or by a fiveor six-membered heteroaromatic moiety, are selective noncompetitive antagonists of NMDA receptors and/or are antagonists of AMPA receptors, and are therefore of utility in the treatment of conditions such as, neurodegenerative disorders, convulsions or schizophrenia, which require the administration of an NMDA and/or AMPA antagonist.
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, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 28, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 28, 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.