US 6,818,020 C1 (1,544th)
Non-oxidizing polymeric medical implant
Deh-Chuan Sun, Allendale, NJ (US); and Casper F. Stark, Allendale, NJ (US)
Filed by Deh-Chuan Sun, Allendale, NJ (US); and Casper F. Stark, Allendale, NJ (US)
Assigned to HOWMEDICA OSTEONICS CORP., Mahwah, NJ (US)
Reexamination Request No. 95/000,428, Jan. 22, 2009.
Reexamination Certificate for Patent 6,818,020, issued Nov. 16, 2004, Appl. No. 10/461,636, Jun. 13, 2003.
Application 08/439,028 is a division of application No. 08/320,705, filed on Oct. 7, 1994, granted, now 5,449,745.
Application 08/320,705 is a division of application No. 08/070,074, filed on Jun. 1, 1993, granted, now 5,414,049.
Application 95/000,428 is a continuation of application No. 10/041,118, filed on Jan. 8, 2002, granted, now 6,664,308.
Application 10/041,118 is a continuation of application No. 09/604,868, filed on Jun. 28, 2000, granted, now 6,372,814.
Application 09/604,868 is a continuation of application No. 09/012,345, filed on Jan. 23, 1998, granted, now 6,174,934.
Application 09/012,345 is a continuation of application No. 08/733,067, filed on Oct. 16, 1996, granted, now 5,728,748.
Application 08/733,067 is a continuation of application No. 08/439,028, filed on May 11, 1995, granted, now 5,650,485.
Inter Partes Reexamination Certificate issued on Aug. 10, 2018.
Int. Cl. A61L 27/00 (2006.01); A61L 2/08 (2006.01); A61L 27/16 (2006.01); A61L 29/04 (2006.01); A61L 31/04 (2006.01); B29C 35/08 (2006.01); B29C 43/00 (2006.01); B29C 43/16 (2006.01); A61L 15/60 (2006.01); B29K 23/00 (2006.01); B29L 31/00 (2006.01); B29K 105/00 (2006.01)
CPC A61L 2/081 (2013.01) [A61L 2/08 (2013.01); A61L 2/082 (2013.01); A61L 2/087 (2013.01); A61L 15/60 (2013.01); A61L 27/16 (2013.01); A61L 29/041 (2013.01); A61L 31/048 (2013.01); B29C 35/0805 (2013.01); B29C 43/00 (2013.01); B29C 43/16 (2013.01); B29C 2035/085 (2013.01); B29K 2023/0683 (2013.01); B29K 2105/253 (2013.01); B29K 2995/0087 (2013.01); B29K 2995/0089 (2013.01); B29L 2031/7532 (2013.01); Y10S 522/915 (2013.01); Y10S 525/937 (2013.01); Y10S 623/901 (2013.01)]
AS A RESULT OF REEXAMINATION, IT HAS BEEN DETERMINED THAT:
Claims 1-12 are cancelled.
1. A medical implant comprising an irradiated ultra-high molecular weight polyethylene having a weight average molecular weight greater than 400,000 and a solubility of less than 80.9% in trichlorobenzene.