Plastic article or earthenware shaping or treating: apparatus – With mechanical means forming or expanding pores
Reexamination Certificate
2011-01-04
2011-01-04
Ewald, Maria Veronica D (Department: 1791)
Plastic article or earthenware shaping or treating: apparatus
With mechanical means forming or expanding pores
C425S81700C, C425S144000, C425S149000, C264S051000, C264S052000
Reexamination Certificate
active
07862316
ABSTRACT:
Foamed thermoplastic polymeric mechanical planarization polishing pads (“MP pads”) made with supercritical fluids are presented. A supercritical fluid foaming agent is dissolved in a thermoplastic polymer. A rapid change in the solubility and volume of the supercritical fluid foaming agent in the thermoplastic polymer results in foaming of the thermoplastic polymer. Foamed thermoplastic polymeric MP pads are advantageously both significantly and uniformly porous.
REFERENCES:
patent: 4737526 (1988-04-01), Mukaiyama et al.
patent: 4927432 (1990-05-01), Budinger et al.
patent: 5158986 (1992-10-01), Cha et al.
patent: 5334356 (1994-08-01), Baldwin et al.
patent: 5358675 (1994-10-01), Campbell et al.
patent: 5584146 (1996-12-01), Shamouillan et al.
patent: 5866053 (1999-02-01), Park et al.
patent: 5957757 (1999-09-01), Berman
patent: 6126532 (2000-10-01), Sevilla et al.
patent: 6169122 (2001-01-01), Blizard et al.
patent: 6217426 (2001-04-01), Tolles et al.
patent: 6231942 (2001-05-01), Blizard et al.
patent: 6235380 (2001-05-01), Tupil et al.
patent: 6248810 (2001-06-01), St. Clair et al.
patent: 6284810 (2001-09-01), Burnham et al.
patent: 6293852 (2001-09-01), Roberts et al.
patent: 6294115 (2001-09-01), Blizard et al.
patent: 6306019 (2001-10-01), Finkelman
patent: 6322347 (2001-11-01), Xu
patent: 6325703 (2001-12-01), Cook et al.
patent: 6818301 (2004-11-01), Obeng et al.
Website contents of Trexel, Inc. (http://www.trexel.com) as of Aug. 8, 2002.
D. F. Baldwin et al., “An Extrusion System for the Processing of Microcellular Polymer Sheets: Shaping and Cell Growth Control,” Polymer Engineering and Science, May 1996, vol. 36, No. 10, pp. 1425-1435.
D Ewald Maria Veronica
Micro)n Technology, Inc.
Wells St. John P.S
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