ELECTRET COARSE POWDER
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United States of America Patent
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app pub date -
Feb 26, 2013
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Feb 17, 2010
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Abstract
The subject invention provides electret coarse powder useful as electrophoretic particles for a large-screen display. The electret coarse powder is obtained by irradiating a fluorine-containing resin sheet with an electron beam or a radial ray to convert the fluorine-containing resin sheet into an electret sheet, and pulverizing the electret sheet.
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