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<http://webisa.webdatacommons.org/379721840>	<http://www.w3.org/ns/prov#value>	"Patent US6723161 - Method for oxidizing organic pigment - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More ??Sign inAdvanced Patent SearchPatentsA method for oxidizing an organic pigment including dispersing the pigment in an aqueous medium and exposing the dispersed pigment to ultrasonic radiation, whereby the exposed pigment exhibits from 3 to 10 microequivalents of carboxylic" .
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