Compositions comprising nanoparticles of nsaid
CA 2212779 C · Owner: Elan Corporation, Plc · Inventors: Eickhoff W. Mark; Mueller, Karl R.; Engers, David A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A composition comprising a crystalline NSAID having polyvinylpyrrolidone adsorbed on the surface thereof in an amount sufficient to maintain an effective average particle size of less than about 1000 µm hygroscopic , sugar and sodium lauryl sulfate exhibit greatly reduced gastric irritation following oral administration and/or hastened onset of action due to the substantial redispersion of the solid formulation to nanoparticles in gastric fluid.
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 January 18, 1996 and granted May 6, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 18, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 18, 2018.
- 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.