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Expired Canadian patentCanada

Crack prevention of implanted prostheses

CA 1295950 C · Owner: Corvita Corporation · Inventors: Pinchuk, Leonard

CIPO record

Overview

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

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Abstract From the Canadian patent

Crack Prevention of Implanted Prostheses Abstract of the Disclosure, Implantable devices for medical use are provided which have been subjected to treatmlent with a crack preventative composition that includes a silicone rubber such as poly(dimethyl siloxane). This treatment substantially prevents cracking of the implantable device after it is implanted.

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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 February 18, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 18, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 8, 1988
GrantedFebruary 18, 1992
Term endedFebruary 18, 2009
Patent numberCA 1295950 C
Classification (IPC)A61L27/00 +1 more

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedMarch 8, 1988Patent grantedFeb 18, 1992Term endedFeb 18, 2009

Sources & verification

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