Catheter injectable depot compositions and uses thereof
CA 2467239 A1 · Owner: Alza Corporation · Inventors: Wright, Jeremy Corwin; Chen, Guohua; Spaltro, John J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Catheter injectable depot compositions are provided that include a bioerodible, biocompatible polymer, a solvent having miscibility in water of less than or equal to 7 wt.% at 25~C, in an amount effective to plasticize the polymer and form a gel therewith, a thixotropic agent and a beneficial agent. , The solvent comprises an aromatic alcohol an ester of an aromatic acid, an , aromatic ketone or mixtures thereof. The compositions are have substantially improved the shear thinning behavior and reduced injection force rendering , the compositions readily implanted beneath a patient's body surface by injection.
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 14, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 14, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 14, 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.