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Expired Canadian patentCanada

Highly crystalline cross-linked oxidation-resistant polyethylene

CA 2554777 C · Owner: Oral, Ebru · Inventors: Muratoglu, Orhun K.; Oral, Ebru

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

The present invention relates to methods for making highly crystalline crosslinked polymeric material, for example highly crystalline cross-linked ultrahigh molecular weight polyethylene (UHMWPE). The invention also provides methods of making antioxidant-doped highly crystalline cross-linked polymeric material using high pressure and high temperature crystallization processes medical implants made thereof, and materials used therein.

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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

  • Filed February 3, 2005 and granted October 9, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 3, 2025.
  • Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 3, 2005
GrantedOctober 9, 2012
Term endedFebruary 3, 2025
Patent numberCA 2554777 C
Classification (IPC)C08J3/00 +2 more

Timeline

Timeline From CIPO dates

2006200820102012201420162018202020222024Application filedFeb 3, 2005Patent grantedOct 9, 2012Term endedFeb 3, 2025

Sources & verification

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