THERMALLY TREATED EXPANDED PERLITE
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United States of America Patent
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Issued Date -
Jan 7, 2016
app pub date -
Sep 15, 2015
filing date -
Aug 13, 2008
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Abstract
A thermally treated expanded perlite that can be coated or impregnated with at least one active material and the use of the thermally treated expanded perlite as a light-weight filtration media. Methods for forming thermally treated expanded perlite as well as methods for forming thermally treated perlite coated or impregnated with an active material are also disclosed.
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