Expired Canadian patentCanada
Bioadhesive pharmaceutical composition for the controlled release of active ingredients
CA 2193454 C · Owner: Rault, Isabelle · Inventors: Pichon, Gerald; Rault, Isabelle
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
his invention consists of a new bioadhesive pharmaceutical mixture that permits the prolonged release of active ingredients administered orally or transmucosally.
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 December 19, 1996 and granted July 24, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 19, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 19, 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.
FiledDecember 19, 1996
GrantedJuly 24, 2001
Term endedDecember 19, 2016
Patent numberCA 2193454 C
Classification (IPC)A61K47/32 +1 more
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.