Hip joint prosthesis
CA 2220665 A1 · Owner: Schmidt, Mary Elizabeth · Inventors: Schmidt, Mary Elizabeth; Farrar, Richard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A joint prosthesis formed of a first and a second component. The articulation surfaces of the first component and the second component are both formed from a cobalt chromium alloy. The prosthesis is characterised in that the articulation surface of the first component or the second component is formed from a cobalt chromium alloy having less than 0.1% carbon by weight and the other, articulation surface is formed from a cobalt chromium alloy comprising at least 0.18% carbon by weight.
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 November 10, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 10, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 10, 2019.
- 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.