Plastic and nonmetallic article shaping or treating: processes – Vacuum treatment of work – To degas or prevent gas entrapment
Reexamination Certificate
2006-01-24
2006-01-24
Staicovici, Stefan (Department: 1732)
Plastic and nonmetallic article shaping or treating: processes
Vacuum treatment of work
To degas or prevent gas entrapment
C264S139000, C264S255000, C264S257000, C264S258000, C264S324000, C156S245000
Reexamination Certificate
active
06989117
ABSTRACT:
A method of making a polishing pad having a body comprising fibers embedded in a matrix polymer formed by a reaction of polymer precursors. The fibers define interstices, and the precursors fill these interstices substantially completely before completion of the reaction. The method comprising placing the fibers and the precursors in a cavity of a mold for shaping the polishing pad; applying a differential pressure across a mold cavity, where the differential pressure and the amount of precursors are sufficient to cause the precursors to fill the interstices substantially completely before completion of the reaction; and applying sufficient heat to the mold to at least partially cure the polishing pad by causing the precursors to react.
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Billings Scott Clayton
Chen Shyng-Tsong
Chi Hsu Oscar Kai
Davis Kenneth
Gilbride David S.
Connolly Bove & Lodge & Hutz LLP
International Business Machines - Corporation
Staicovici Stefan
Trepp, Esq. Robert M.
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