Electricity: measuring and testing – Fault detecting in electric circuits and of electric components – Of individual circuit component or element
Reexamination Certificate
2006-08-04
2009-02-24
Nguyen, Ha Tran T (Department: 2829)
Electricity: measuring and testing
Fault detecting in electric circuits and of electric components
Of individual circuit component or element
Reexamination Certificate
active
07495460
ABSTRACT:
A wafer holding body used for a wafer prober for testing a semiconductor wafer includes a chuck top having a conductive layer on a surface thereof and a support body supporting the chuck top. The support body has a base portion opposing the chuck top and a side portion extending from the perimeter of the base portion to the chuck top to support the chuck top. A cavity portion is formed between the chuck top and the base portion of the support body. A reflection plate is provided in the cavity portion. A heater unit and a wafer prober includes the wafer holding body.
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Japanese Office Action, with English translation, issued in Japanese Patent Application No. JP 2005-227333, mailed Jul. 1, 2008.
Itakura Katsuhiro
Nakata Hirohiko
Natsuhara Masuhiro
McDermott Will & Emery LLP
Nguyen Ha Tran T
Nguyen Tung X
Sumitomo Electric Industries Ltd.
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