Plastic and nonmetallic article shaping or treating: processes – Disparate treatment of article subsequent to working,... – Effecting temperature change
Reexamination Certificate
2005-05-10
2010-11-16
Daniels, Matthew J. (Department: 1791)
Plastic and nonmetallic article shaping or treating: processes
Disparate treatment of article subsequent to working,...
Effecting temperature change
C264S488000, C623S022210
Reexamination Certificate
active
07833452
ABSTRACT:
The present invention relates to methods for making oxidation resistant medical devices that comprise polymeric materials, for example, ultra-high molecular weight polyethylene (UHMWPE). The invention also provides methods of making antioxidant-doped medical implants, for example, doping of medical devices containing cross-linked UHMWPE with vitamin E by diffusion, post-doping annealing, and materials used therein.
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Muratoglu Orhun K.
Spiegelberg Stephen H.
Cambridge Polymer Group, Inc.
Daniels Matthew J.
Perkins Coie LLP
The General Hospital Corporation
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