Novel naphthyridine derivatives
CA 2272068 A1 · Owner: Sumitomo Pharmaceuticals Company Limited · Inventors: Ioriya, Katsuhisa; Muraoka, Masami; Yagi, Hideki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Naphthyridine derivatives of general formula (I) and acid addition salts thereof, which exhibit an inhibitory activity against acyl-CoA cholesterol acyltransferase and therefor are useful as preventive and therapeutic agents for hyperlipemia, arteriosclerosis and diseases relate thereto: wherein A is an optionally substituted pyridine ring; X is -N(R2)-CO- (wherein R2 is hydrogen, alkyl, substituted alkyl or the like); Z is a free bond -NH-, C1 or , C2 alkylene or -CH=CH-; Y is aryl or substituted aryl; and L is alkyl substituted alkyl, aryl, substituted aryl or the like.
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 November 25, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 25, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 25, 2019.
- 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.