Substrate polishing apparatus

Abrading – Abrading process – Glass or stone abrading

Reexamination Certificate

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Reexamination Certificate

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06951507

ABSTRACT:
A chemical mechanical polishing apparatus includes a rotating plate on which a substrate received, and a polishing pad which moves across the substrate as it rotates on the plate to polish the substrate. The load of the pad against the substrate, and the rotary speed of the plate, may be varied to control the rate of material removed by the pad.

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