Modified release dosage forms
CA 2461656 A1 · Owner: Sowden, Harry S. · Inventors: Lee, Der-Yang; Sowden, Harry S.; Thomas, Martin
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In one embodiment a dosage form comprises at least one active ingredient and a molded matrix which comprises 10100% of a material having a melting point of less than about 100 degrees C selected from the stamp consisting of thermoplastic polyalkylene oxides, low melting hydrophobic materials thermoplastic polymers, thermoplastic starches and combinations thereof and , the matrix is capable of providing modified release of the active ingredient upon contacting of the dosage form with a liquid medium. The dosage form may additionally comprise uncoated particles which may contain at least one active ingredient. In another embodiment, a dosage form comprises at least one active …
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 September 28, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 28, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 28, 2024.
- 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.