Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – Shaping against forming surface
Reexamination Certificate
2006-04-12
2009-06-16
Berman, Susan W (Department: 1796)
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
Shaping against forming surface
C264S320000, C264S331190, C264S331210, C264S331110, C264S331170
Reexamination Certificate
active
07547405
ABSTRACT:
Solid-state deformation processing of crosslinked high molecular weight polymers such as UHMWPE, for example by extrusion below the melt transition, produces materials with a desirable combination of physical and chemical properties. Crosslinked bulk materials are heated to a compression deformable temperature, and pressure is applied to change a transverse dimension of the material. After cooling and stress relieving, a treated bulk material is obtained that has enhanced tensile strength in the axial direction orthogonal to the dimension change. In preferred embodiments, medical implant bearing materials are machined from the treated bulk material with the in vivo load bearing axis substantially parallel or coincident with the axial direction of the treated bulk material.
REFERENCES:
patent: 2948666 (1960-08-01), Lawton
patent: 3362897 (1968-01-01), Lawton
patent: 3563870 (1971-02-01), Tung et al.
patent: 3886056 (1975-05-01), Kitamaru et al.
patent: 3956253 (1976-05-01), Braun
patent: 4055862 (1977-11-01), Farling
patent: 4171338 (1979-10-01), Mason
patent: 4224696 (1980-09-01), Murray et al.
patent: 4265959 (1981-05-01), Sano et al.
patent: 4281420 (1981-08-01), Raab
patent: 4348350 (1982-09-01), Meier et al.
patent: 4390666 (1983-06-01), Moriguchi et al.
patent: 4582656 (1986-04-01), Hoffmann
patent: 4586995 (1986-05-01), Randall et al.
patent: 4587163 (1986-05-01), Zachariades
patent: 4636340 (1987-01-01), Itaba et al.
patent: 4655769 (1987-04-01), Zachariades
patent: 4668577 (1987-05-01), Ohta et al.
patent: 4747990 (1988-05-01), Gaussens et al.
patent: 4778633 (1988-10-01), Kiang et al.
patent: 4902460 (1990-02-01), Yagi et al.
patent: 5030402 (1991-07-01), Zachariades
patent: 5030487 (1991-07-01), Rosenzweig
patent: 5037928 (1991-08-01), Li et al.
patent: 5066755 (1991-11-01), Lemstra
patent: 5130376 (1992-07-01), Shih
patent: 5160464 (1992-11-01), Ward et al.
patent: 5169589 (1992-12-01), Francoeur et al.
patent: 5200439 (1993-04-01), Asanuma
patent: 5204045 (1993-04-01), Courval et al.
patent: 5210130 (1993-05-01), Howard, Jr.
patent: 5234652 (1993-08-01), Woodhams et al.
patent: 5266246 (1993-11-01), Johnson et al.
patent: 5276079 (1994-01-01), Duan et al.
patent: 5358529 (1994-10-01), Davidson
patent: 5405393 (1995-04-01), Falkenstrom
patent: 5414049 (1995-05-01), Sun et al.
patent: 5428079 (1995-06-01), Bastiaansen et al.
patent: 5439949 (1995-08-01), Lucas et al.
patent: 5449745 (1995-09-01), Sun et al.
patent: 5466530 (1995-11-01), England et al.
patent: 5478906 (1995-12-01), Howard, Jr.
patent: 5505900 (1996-04-01), Suwanda et al.
patent: 5508319 (1996-04-01), DeNicola, Jr. et al.
patent: 5543471 (1996-08-01), Sun et al.
patent: 5552104 (1996-09-01), DeNicola, Jr. et al.
patent: 5577368 (1996-11-01), Hamilton et al.
patent: 5650485 (1997-07-01), Sun et al.
patent: 5684124 (1997-11-01), Howard, Jr. et al.
patent: 5709020 (1998-01-01), Pienkowski et al.
patent: 5728748 (1998-03-01), Sun et al.
patent: 5824411 (1998-10-01), Shalaby et al.
patent: 5879400 (1999-03-01), Merrill et al.
patent: 6017975 (2000-01-01), Saum et al.
patent: 6048480 (2000-04-01), Doyle
patent: 6143232 (2000-11-01), Rohr
patent: 6146426 (2000-11-01), Doyle
patent: 6165220 (2000-12-01), McKellop et al.
patent: 6168626 (2001-01-01), Hyon et al.
patent: 6174934 (2001-01-01), Sun et al.
patent: 6184265 (2001-02-01), Hamilton et al.
patent: 6228900 (2001-05-01), Shen et al.
patent: 6242507 (2001-06-01), Saum et al.
patent: 6245276 (2001-06-01), McNulty et al.
patent: 6281264 (2001-08-01), Salovey et al.
patent: 6316158 (2001-11-01), Saum et al.
patent: 6355215 (2002-03-01), Poggie et al.
patent: 6365089 (2002-04-01), Krebs et al.
patent: 6372814 (2002-04-01), Sun et al.
patent: 6395799 (2002-05-01), Johnson
patent: 6432349 (2002-08-01), Pletcher et al.
patent: 6458727 (2002-10-01), Jones et al.
patent: 6464926 (2002-10-01), Merrill et al.
patent: 6494917 (2002-12-01), McKellop et al.
patent: 6503439 (2003-01-01), Burstein
patent: 6547828 (2003-04-01), Scott et al.
patent: 6562540 (2003-05-01), Saum et al.
patent: 6641617 (2003-11-01), Merrill et al.
patent: 6664308 (2003-12-01), Sun et al.
patent: 6686437 (2004-02-01), Buchman et al.
patent: 6692679 (2004-02-01), McNulty et al.
patent: 6709464 (2004-03-01), Scott et al.
patent: 6726727 (2004-04-01), Scott et al.
patent: 6786933 (2004-09-01), Merrill et al.
patent: 6800670 (2004-10-01), Shen et al.
patent: 6818020 (2004-11-01), Sun et al.
patent: 6818172 (2004-11-01), King et al.
patent: 6852772 (2005-02-01), Muratoglu et al.
patent: 6905511 (2005-06-01), Wang et al.
patent: 2001/0049401 (2001-12-01), Salovey et al.
patent: 2002/0007219 (2002-01-01), Merrill et al.
patent: 2002/0156536 (2002-10-01), Harris et al.
patent: 2003/0013781 (2003-01-01), Merrill et al.
patent: 2003/0045603 (2003-03-01), Salovey et al.
patent: 2003/0105182 (2003-06-01), Merrill et al.
patent: 2003/0119935 (2003-06-01), Merrill et al.
patent: 2003/0125513 (2003-07-01), King
patent: 2003/0137081 (2003-07-01), Pitkanen
patent: 2003/0139555 (2003-07-01), Hubbard et al.
patent: 2003/0158287 (2003-08-01), Salovey et al.
patent: 2003/0208278 (2003-11-01), Richard
patent: 2003/0212161 (2003-11-01), McKellop et al.
patent: 2003/0229155 (2003-12-01), Wang et al.
patent: 2004/0132856 (2004-07-01), Merrill et al.
patent: 2004/0208841 (2004-10-01), Salovey et al.
patent: 2004/0266902 (2004-12-01), Shen et al.
patent: 2005/0006821 (2005-01-01), Merrill et al.
patent: 2005/0010288 (2005-01-01), Merrill et al.
patent: 2005/0043431 (2005-02-01), Wang et al.
patent: 2005/0043815 (2005-02-01), King et al.
patent: 2005/0048096 (2005-03-01), Shen et al.
patent: 2005/0056971 (2005-03-01), Merrill et al.
patent: 2005/0059750 (2005-03-01), Sun et al.
patent: 2005/0069696 (2005-03-01), King et al.
patent: 2005/0096749 (2005-05-01), Merrill et al.
patent: 1 257 745 (1989-07-01), None
patent: 19914571 (2001-01-01), None
patent: 0 729 981 (2002-03-01), None
patent: 1334993 (2003-08-01), None
patent: 57-211347 (1982-12-01), None
patent: 62-243634 (1987-10-01), None
patent: 02-175137 (1990-07-01), None
patent: 04-198201 (1992-07-01), None
patent: 05-507748 (1993-11-01), None
patent: 91 022222 (1997-05-01), None
patent: WO 93/10953 (1993-06-01), None
patent: WO 95/06148 (1995-03-01), None
patent: WO 98/01085 (1998-01-01), None
patent: WO 98/14223 (1998-04-01), None
patent: WO 03/049930 (2003-06-01), None
“Researchers Get Awards for Orthopaedic Research”, The American Academy of Orthopaedic Surgeons, News Release. (Mar. 19, 1998), available at http://www.aaos.org/wordhtml/press/98press/kappa.htm. (4 pages).
“Researchers to Get Kappa Delta Awards for Achievements” The American Academy of Orthopaedic Surgeons, Academy News. (Mar. 19, 1998), available at http://www.aaos.org/wordhtml/98news/kappa.htm. (3 pages).
Appleby et al. “Post-Gamma Irradiation Cross-linking of Polyethylene Tape by Acetylene Treatment” Journal of Materials Science. vol. 29 (1994) p. 227-231.
Appleby et al. “Property Modification of Polyethylene Tapes by Acetylene-Sensitized Gamma Irradiation” Journal of Materials Science. vol. 29 (1994) p. 151-156.
Bhateja et al. “Radiation-Induced Crystallinity Changes in Polyethylene Blends” Journal of Materials Science. vol. 20 (1985) p. 2839-2845.
Bhateja, S. “Radiation-Induced Crystallinity Changes in Linear Polyethylene” Journal of Polymer Science: Polymer Physics Edition. vol. 21 (1983) p. 523-536.
Bhateja, S. “Radiation-Induced Crystallinity Changes in Linear Polyethylene: Influence of Aging” Journal of Applied Polymer Science. vol. 28 (1983) p. 861-872.
Bhateja, S. “Radiation-Induced Crystallinity Changes in Pressure-Crystallized Ultrahigh Molecular Weight Polyethylene” J. Macromol. Sci. Phys. B22(1) (1983) p. 159-168.
Bowman, J. “The Processing and Properties of γ-Irradiated HDPE Granules” Intern. Polymer Processing III. (1988) p. 211-220.
Chen et al. “Radiation-Induced Crosslinking: II. Effect on the Crystalline and Amorphous Densities of Polyethylene&#
Freedman Jordan H.
Gunter James E.
Hawkins H. Gene
Salyer Brian D.
Schroeder David Wayne
Berman Susan W
Biomet Manufacturing Corp.
Harness Dickey
LandOfFree
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