Mobile bearing knee prosthesis
CA 2532877 C · Owner: Burstein, Albert · Inventors: Angibaud, Laurent; Hoyt, James Edward; Burstein, Albert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A knee prosthesis having a mobile may include a spherical radius interface comprised of a concave superior surface on a tibial tray (102) and a convex inferior surface on a tibial insert (104). The knee prosthesis may also include a spherical radius interface comprised of a convex superior surface on a tibial tray and a concave inferior surface on a tibial insert. The mobile bearing knee prosthesis can additionally include a bi-concave interface (e.g. having a "wave" like surface geometry).
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 19, 2004 and granted October 9, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 19, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 19, 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.