Abrading – Work holder – Vacuum
Reexamination Certificate
2007-05-22
2007-05-22
Rose, Robert A. (Department: 3723)
Abrading
Work holder
Vacuum
C269S021000
Reexamination Certificate
active
11116349
ABSTRACT:
A thin wafer carrying device includes a laminated board made of layers of compound material so that the thin wafer is put on the circular board. The compound material includes reinforcement material and high-polymer resin. A metal film good in electric conductivity is coated to the compound material. The compound material has been used in printed circuit boards. The carrying device includes a plurality of tiny holes and a vacuum system located beneath the circular board. The thin wafer is attracted on the carrying device by the method of vacuum and is convenient to be tested, processed and transported.
REFERENCES:
patent: 3811182 (1974-05-01), Ryan et al.
patent: 3949295 (1976-04-01), Moorshead
patent: 6019164 (2000-02-01), Getchel et al.
patent: 6386191 (2002-05-01), Yoshimura et al.
Lowe Hauptman & Berner LLP
Rose Robert A.
WIN Semiconductors Corp.
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