Measuring and testing – Liquid analysis or analysis of the suspension of solids in a... – Content or effect of a constituent of a liquid mixture
Reexamination Certificate
2006-01-18
2010-10-05
Williams, Hezron (Department: 2856)
Measuring and testing
Liquid analysis or analysis of the suspension of solids in a...
Content or effect of a constituent of a liquid mixture
C210S500230, C029S595000
Reexamination Certificate
active
07805983
ABSTRACT:
A method for measuring the number of fine particles in ultrapure water includes subjecting the ultrapure water to internal pressure filtration through a hollow fiber membrane having a skin layer capable of trapping the fine particles in the ultrapure water at least on an inner surface thereof, exposing the inner surface of the hollow fiber membrane, and measuring the number of fine particles on the exposed inner surface.
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Akahira Kazunari
Endou Mutsuko
Ito Takashi
Kusano Tooru
Asahi Kasei Chemicals Corp.
Foley & Lardner LLP
Kolb Nathaniel
Nomura Micro Science Co., Ltd.
Williams Hezron
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