Carbostyril compounds, compositions containing same and processes for preparing same
CA 1209575 A · Owner: Otsuka Pharmaceutical Co. Ltd. · Inventors: Nakagawa, Kazuyuki; Ogawa, Hidenori; Yang, Yung-Hsiung
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A carbostyril compound of the formula (I) (I), wherein R1, R2 and R3 are as defined or its pharmaceutically acceptable salt, composition containing the compound and processes for preparing same are disclosed. The compound is: useful as a cardiotonic agent.
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
- Granted August 12, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 12, 2003.
- 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.