Medicaments in sustained release unit dose form
CA 1258232 A · Owner: Sanofi-Synthelabo, Inc. · Inventors: Langridge, John R.; Harrison, Paul J.; Potter, Christopher J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Sustained-release compositions for oral administration comprising medicament-coated nonpareils surrounded by a sustaining coating of at least three admixed polymers afford exceptionally good plasma levels of the medicament.
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 8, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 8, 2006.
- 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.