Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – Plural sequential shaping or molding steps on same workpiece
Reexamination Certificate
2011-05-31
2011-05-31
Gupta, Yogendra N (Department: 1744)
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
Plural sequential shaping or molding steps on same workpiece
C264S293000, C264S496000
Reexamination Certificate
active
07951319
ABSTRACT:
Methods for changing the shape of a surface of an article are disclosed. The methods may include providing a liquid polymer precursor, casting the precursor against a first tool assembly, curing the precursor to form a shape memory polymer substrate, deforming one or more surfaces of the substrate, and mobilizing the shape memory polymer to shift the deformed surface of the substrate from a deformed shape to a pre-set shape.
REFERENCES:
patent: 4420527 (1983-12-01), Conley
patent: 4783141 (1988-11-01), Baba et al.
patent: 5091483 (1992-02-01), Mazurek et al.
patent: 5244288 (1993-09-01), Nagaoka et al.
patent: 5264278 (1993-11-01), Mazurek et al.
patent: 5506300 (1996-04-01), Ward et al.
patent: 5514730 (1996-05-01), Mazurek et al.
patent: 5589246 (1996-12-01), Calhoun et al.
patent: 5889118 (1999-03-01), Delgado et al.
patent: 6092465 (2000-07-01), Agronin
patent: 6288842 (2001-09-01), Florczak et al.
patent: 6388043 (2002-05-01), Langer et al.
patent: 6986855 (2006-01-01), Hood et al.
patent: 7068434 (2006-06-01), Florczak et al.
patent: 7253958 (2007-08-01), Aizenberg et al.
patent: 0 363 919 (1990-01-01), None
patent: 0404004 (1990-12-01), None
patent: 0 688 351 (1997-08-01), None
patent: 1065153 (1989-03-01), None
patent: 3068610 (1991-03-01), None
patent: 3068611 (1991-03-01), None
patent: 4309583 (1992-11-01), None
patent: WO 97/46631 (1997-12-01), None
patent: WO 9942147 (1999-08-01), None
patent: WO 03093341 (2003-11-01), None
Kim et al., “Polyurethanes having shape memory effects”,Polymer, vol. 37 No. 26, pp. 5781-5793, 1996.
Lendlein et al., “AB-polymer networks based on oligo(ε-caprolactone) segments showing shape-memory properties”,PNAS, vol. 98 No. 3, pp. 842-847, 2001.
Lendlein and Kelch, “Shape-memory polymers”,Angew. Chem. Int. Ed.2002, 41, 2034-2057.
Lendlein and Langer, “Biodegradable, elastic shape-memory polymers for potential biomedical applications”,Science, vol. 296, pp. 1673-1676, 2002.
Mazurek et al., “Novel materials based on silicone-acrylate copolymer networks”,Journal of Applied Polymer Science, vol. 80, pp. 159-180, 2001.
Factiva WireWatch Message, “Shape-memory polymers offer new twist on applications”,Modern Plastics International, Chemical Business NewsBase, Apr. 24, 2003.
U.S. Appl. No. 11/399,695, filed Apr. 6, 2006, Florczak et al.
U.S. Appl. No. 11/248,950, filed Oct. 11, 2005, Endle et al.
U.S. Appl. No. 11/495,999, filed Jul. 28, 2006, Dunn et al.
Lendlein et al., “Shape-Memory Polymers as Stimuli-Sensitive Implant Materials”,Clinical Hemorheology and Microcirculation, vol. 32 No. 2, pp. 105-116, 2005.
Bryan William J
Galkiewicz Robert K.
Mazurek Mieczyslaw H.
Olofson Jeffrey M.
Sherman Audrey A.
3M Innovative Properties Company
Gallo Elizabeth A.
Grun Robert J
Gupta Yogendra N
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