Method for production of stable nicorandil preparation
CA 1285486 C · Owner: Iida, Yoshimitsu · Inventors: Iida, Yoshimitsu; Sumida, Shuji
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure:, A method for producing a stable preparation containing nicorandil, a saturated higher aliphatic acid or a saturated higher alcohol which is solid at ordinary temperatures, and optionally, an organic acid such as fumaric acid oxalic acid, salicylic acid, tartaric acid or glutaric acid is disclosed. Nicorandil is useful as a curative for various types of angina pectoris. However, it is unstable in humid conditions and under the compressive pressure exerted by punching operations in tablets making and, therefore the development, of a stable nicorandil preparation has been desired.
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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 July 2, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 2, 2008.
- 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.