Bioactive surface layer, particularly for medical implants and prostheses
CA 2442582 C · Owner: Gasser, Beat · Inventors: Frauchiger, Vinzenz M.; Schlottig, Falko; Textor, Marcus
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A bioactive surface layer is provided, which may be used in a medical implant or , a prosthesis. The bioactive surface layer is preferably applied to a valve metal or , alloy thereof, or a barrier-forming metal coating. A bioactive surface layer comprising, a metal oxide portion in an amount of 25 to 95 atomic percent of a metallic base material and a variable proportion consisting of calcium phosphate , phases, wherein the layer is porous has a thickness of between 0.1 and 50.0 µm , and further comprises amorphous or nanocrystalline calcium phosphates having a Ca/P ratio in a range of between 0.5 and 2.0 over the surface layer; wherein the Ca-ions and PO4-ions are embedded in the …
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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 April 2, 2001 and granted January 4, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 2, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 2, 2023.
- 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
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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.