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Expired Canadian patentCanada

Prosthesis with enhanced surface finish

CA 1317702 C · Owner: Bristol-Myers Company · Inventors: Zolman, Arden Rex; Crowninshield, Roy D.

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

An orthopaedic prosthesis for implantation with a bone cement composition, the prosthesis including a polymer coating and a textured surface underneath at least a portion of the polymer coating. The textured surface, which is visible to the eye without magnification, beneath the polymer coating enhances or increases the surface shear and tensile strength of the prosthesis.

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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

  • Granted May 18, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 18, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 27, 1988
GrantedMay 18, 1993
Term endedMay 18, 2010
Patent numberCA 1317702 C
Classification (IPC)A61F2/32 +2 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedJan 27, 1988Patent grantedMay 18, 1993Term endedMay 18, 2010

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.