Controlled-release of an active substance into a high fat environment
CA 2508722 A1 · Owner: Bend Research, Inc. · Inventors: Chidlaw, Mark Brian; West, James Blair; Friesen, Dwayne Thomas
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A controlled release delivery composition which can be administered to a high fat use environment such as the human gastrointestinal tract following a high fat meal. The delivery composition is embodied as a core surrounded by an asymmetric polymeric membrane. In a preferred embodiment the asymmetric , polymeric membrane is cellulose acetate.
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 November 28, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 28, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 28, 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.