Non-spherical acetabular cup for total hip replacement
CA 2133718 A1 · Owner: Hori, Roy Y. · Inventors: Hori, Roy Y.; Shetty, H. Ravindranath; Ottersberg, Walter H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The device is a prosthetic cup prosthesis providing a surface for articulation of the spherical head of a joint arthroplasty. The articulating surface of the cup is the surface of revolution of an arc intersecting the cup equatorial plane and its polar axis having a, center of curvature translated from the spherical center of the cup rotated about the cup's polar axis.
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 October 5, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 5, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 5, 2016.
- 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.