Virus removal membrane
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United States of America Patent
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Nov 10, 2020
Grant Date -
Feb 2, 2017
app pub date -
Apr 10, 2015
filing date -
Apr 11, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
A virus removal membrane is formed from a hydrophilized synthetic polymer, in which, when a solution containing gold colloids having a diameter of 20 nm is applied through a primary surface to the virus removal membrane to allow the virus removal membrane to capture the gold colloids for measurement of brightness in a cross section of the virus removal membrane, a value obtained by dividing a standard deviation of a value of an area of a spectrum of variation in the brightness by an average of the value of the area is 0.01 or more and 1.5 or less; and a thickness of a portion, where gold colloids having a diameter of 20 nm or more and 30 nm or less are captured, in the cross section of the virus removal membrane in a wet state is 10 μm or more and 30 μm or less.
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