The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 07, 2017
Filed:
Oct. 11, 2013
Applicant:
Biomet Manufacturing, Llc, Warsaw, IN (US);
Inventors:
Jordan H. Freedman, Fort Wayne, IN (US);
David W. Schroeder, Winona Lake, IN (US);
Assignee:
Biomet Manufacturing, LLC, Warsaw, IN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C 71/02 (2006.01); B29B 13/02 (2006.01); B29C 35/02 (2006.01); B29C 47/00 (2006.01); B29K 23/00 (2006.01); B29K 105/00 (2006.01); B29L 31/06 (2006.01); B29C 35/08 (2006.01);
U.S. Cl.
CPC ...
B29C 71/02 (2013.01); B29B 13/02 (2013.01); B29C 35/0227 (2013.01); B29C 47/0004 (2013.01); B29C 47/0071 (2013.01); C08J 7/08 (2013.01); B29C 2035/085 (2013.01); B29C 2035/0844 (2013.01); B29C 2035/0877 (2013.01); B29C 2071/022 (2013.01); B29K 2023/0683 (2013.01); B29K 2105/253 (2013.01); B29K 2105/255 (2013.01); B29K 2995/0094 (2013.01); B29K 2995/0096 (2013.01); B29L 2031/06 (2013.01);
Abstract
Heat treating UHMWPE by applying pressure with radial constraint at suitable times during a heating protocol reduces or eliminates cavitation, which is otherwise observed to occur when the UHMWPE is heated to a temperature above 300° C. Heat treated UHMWPE can undergo subsequent processing involving crosslinking, deformation, doping with antioxidant, and homogenizing or annealing. Heating during these steps can be carried out even above the onset melt temperature of the UHMWPE without loss of physical properties.