Apparatus and process for polishing a substrate

Abrading – Machine – Reciprocating tool

Reexamination Certificate

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C451S159000, C451S170000, C451S163000

Reexamination Certificate

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06942554

ABSTRACT:
An apparatus for polishing a substrate with an optical surface. The apparatus contains a polishing pad and and a device for oscillating the polishing pad while simultaneously contacting it with at least 90 percent of said optical surface.

REFERENCES:
patent: 3534506 (1970-10-01), Soong et al.
patent: 3877177 (1975-04-01), Taniguchi
patent: 3889426 (1975-06-01), Blum
patent: 4232485 (1980-11-01), Eadon-Allen
patent: 4520596 (1985-06-01), Otto et al.
patent: 5403227 (1995-04-01), Franklin et al.
patent: 5447464 (1995-09-01), Franklin et al.
patent: 6390903 (2002-05-01), Takahashi et al.
patent: 6629882 (2003-10-01), Takahashi et al.

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