Controlled release compositions
CA 2533592 C · Owner: Surmodics Pharmaceuticals, Inc. · Inventors: Cook, Gary P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The compositions disclosed herein are for use as controlled release therapeutics for the treatment of a wide variety of diseases. In particular the compositions provide water soluble bioactive agents organic ions and , polymers where the bioactive agent is efficiently released over time with minimal degradation products. The resulting controlled release composition is capable of administration in a decreased dose volume due to the high drug content and predominance of non-degraded bioactive agent after release. Additionally, the compositions, of the present invention are capable of long term, sustained releases.
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 July 15, 2004 and granted November 10, 2015. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 15, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 15, 2026.
- 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.