Dual-radius acetabular cup component
CA 2006274 C · Owner: Lyons, Matthew V. · Inventors: Zarnowski, Alfred J.; Figgie, Harry E. Iii; Lyons, Matthew V.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An acetabular cup has a shell component with an outer surface including a first spherical surface portion and a second spherical surface portion, and an acetabulum is prepared with an inner surface having a spherical configuration complementary to the second spherical surface portion of the shell component the, radius of the first spherical surface portion being slightly greater than the radius of the second spherical surface portion such that upon nesting of the second spherical surface portion of the shell component in contiguous relationship with the inner surface of the acetabulum, the first spherical surface portion engages the inner surface of the acetabulum in an interference fit to …
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 December 21, 1989 and granted August 24, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 21, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 21, 2011.
- 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.