Prophylactic/therapeutic agents for atherosclerosis
CA 2289676 A1 · Owner: Chugai Seiyaku Kabushiki Kaisha · Inventors: Cynshi, Osamu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Preventives/remedies for arteriosclerosis containing as the active ingredient compounds represented by general formula (1) potential optically active , isomers thereof or pharmaceutically acceptable salts of the same. In said formula (1) R1 represents hydrogen or acyl; R2 represents lower alkyl; R3 represents hydrogen or lower alkyl; and R4 R5 and R6 represent each hydrogen, alkyl alkenyl, alkynyl or aryl, or R2 and R4 may form together with the oxygen atom a furan or dihydrofuran ring and R5 and R6 may form together , cycloalkyl on which at least one methylene is optionally substituted by oxygen, sulfur or alkylated nitrogen to give a heterocycle.
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 April 23, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 23, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 23, 2020.
- 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.