Radiant energy – Inspection of solids or liquids by charged particles
Reexamination Certificate
2006-12-04
2009-02-03
Vanore, David A. (Department: 2881)
Radiant energy
Inspection of solids or liquids by charged particles
C250S307000, C250S310000, C250S311000, C250S442110, C250S492200
Reexamination Certificate
active
07485858
ABSTRACT:
An object of the present invention is to provide a suitable method of observing a wafer edge by using an electron microscope. The electron microscope includes a column which can take an image in being tilted, and thus allows a wafer edge to be observed from an oblique direction.
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Hirai Takehiro
Obara Kenji
Hitachi High-Technologies Corporation
McDermott Will & Emery LLP
Purinton Brooke
Vanore David A.
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