Methods for making oxidation resistant polymeric material
CA 2565849 C · Owner: Cambridge Polymer Group, Inc. · Inventors: Muratoglu, Orhun K.; Spiegelberg, Stephen H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to methods for making oxidation resistant medical devices that comprise polymeric materials for example, ultra-high , molecular weight polyethylene (UHMWPE). The invention also provides methods of making antioxidant-doped medical implants for example, doping of medical , devices containing cross-linked UHMWPE with vitamin E by diffusion post-, doping annealing, and materials used therein.
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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 May 10, 2005 and granted January 29, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 10, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.