Long-acting diclofenac sodium preparation
CA 1319616 C · Owner: Kasai, Syuichi · Inventors: Kasai, Syuichi; Iwasa, Akira; Okada, Minoru
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A long-acting diclofenac sodium preparation is disclosed. The preparation comprises a sustained-release diclofenac sodium component which is prepared by coating a sustained-release coat onto a pharmaceutical composition comprising diclofenac sodium and an organic acid. It can decrease the maximum blood concentration of diclofenac by suppressing and controlling the rate of release of diclofenac sodium and maintain the blood concentration of diclofenac constant for a considerably long period of time. The risk of side-effect occurrences is reduced and patients are released from the obligation to take the medicine frequently.
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 June 29, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 29, 2010.
- 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.