Oral drug delivery system
CA 2473847 A1 · Owner: Stokes, Alistair · Inventors: Stokes, Alistair; Flahive, Eamon; Tucker, Mark Rupert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There is disclosed an oral delivery system which comprises: a sachet at least , partially formed from at least one microporous or permeable membrane and , defining a cavity; a physiologically active substance dissolved or dispersed in a liquid or gel, within the cavity, the microporous or permeable membrane being in contact with the liquid or gel and being permeable to the physiologically active substance in the liquid or gel; and an encapsulating layer surrounding the sachet; characterised in that either: a) the membrane is hydrophilic and the contents of the sachet are hydrophobic; or b) the membrane is hydrophobic and the contents of the sachet are hydrophilic; whereby in , use, …
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 February 4, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 4, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 4, 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.