Radiopaque polymeric stents
CA 2647021 C · Owner: Kohn, Joachim B. · Inventors: Schmid, Eric; Zeltinger, Joan; Brandom, Donald K.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Preferred embodiments of the present invention relate to polymeric medical devices such as stents. More particularly, the polymeric compositions disclosed herein comprise halogen-containing tyrosine-derived diphenols, optionally in conjunction with other groups such as dicarboxylic acids and/or poly(alkylene oxide) such that the medical devices made from these polymeric compositions are bioresorbable and inherently radiopaque and exhibit physicomechanical properties consistent with the intended uses of such devices.
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 September 27, 2004 and granted February 12, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 27, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 27, 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.