In-situ randomization and recording of wafer processing...

Data processing: generic control systems or specific application – Specific application – apparatus or process – Article handling

Reexamination Certificate

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C414S801000, C414S806000, C414S937000

Reexamination Certificate

active

06862495

ABSTRACT:
Wafer order is randomized in-situ by use of a separate wafer staging area and randomly shuffling wafers to and from this staging area to shuffle the processing order of the wafer lot. Positional data is captured for each wafer at both the send and receive ends of the process.

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patent: 6180424 (2001-01-01), Tigelaar et al.
patent: 6213708 (2001-04-01), Allen
patent: 6336086 (2002-01-01), Perez et al.
patent: 6599763 (2003-07-01), Reyes et al.
patent: 6684125 (2004-01-01), Kahn et al.

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