A method to improve surface properties of pharmaceutical tablets
CA 2484641 A1 · Owner: Akzo Nobel N.V. · Inventors: Grintjes, Lambertus Pedro Everhardus; Van Lare, Coert Elisabeth Johannes; De Haan, Pieter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention provides a method to improve surface properties of tablets having a matrix consisting of at least 55% of a cellulose ether characterised , in that the method comprises briefly exposing the tablets to a hydrous solvent.
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 April 29, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 29, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 29, 2025.
- 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.