Granulates for multiparticulate controlled-release oral compositions
CA 2005992 A1 · Owner: Groenendaal, Jan W. · Inventors: Groenendaal, Jan W.; Vork, Edoaldus; De Ronde, Hendrikus A. G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Granulates for multiparticulate controlled-release oral compositions comprising biologically active substance in solid dispersion with an acid-resistance and/or releaselimiting compound, the solid dispersion being mixed with water-insoluble carrier particles, and the preparation of such granulates, Preferred biologically active substance are corticosteroids, non-steroidal anti-inflammatory drugs and bismuth compounds. The granules have a preferred particle size of less than 1 mm.
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 December 19, 1989. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 19, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 19, 2011.
- 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.