Implants for controlled release of pharmaceutically active principles and method for making same
CA 2291659 A1 · Owner: Debio Recherche Pharmaceutique S.A. · Inventors: Gurny, Robert; Rothen-Weinhold, Alexandra; Heimgartner, Frederic
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns an implant for the controlled release of at least one pharmaceutically active principle comprising: a core containing at least an active principle; and a sheath enclosing said core characterised in that said sheath consists of at least a polymeric film applied around said core. The invention also concerns a method for preparing such an implant characterised in that it consists in making a core containing at least an active principle in preparing at least a polymeric film in applying said polymeric film(s) around said core by juxtaposing and/or superposing them and in sterilising the resulting implant.
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 June 2, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 2, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 2, 2020.
- 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.