Ultrasonic cleaning method
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United States of America Patent
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May 30, 2017
Grant Date -
Feb 25, 2016
app pub date -
Nov 3, 2015
filing date -
Jan 27, 2012
priority date (Note) -
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Abstract
A cleaning method involves: disposing in a cleaning liquid held in a cleaning tank an object to be cleaned; and ultrasonically vibrating the cleaning liquid via an intermediate medium in contact with the cleaning tank to clean said object, the ultrasonically vibrating involving: ultrasonically vibrating the cleaning liquid with the cleaning liquid and the intermediate medium allowing sonic velocities, respectively, having a first difference; and ultrasonically vibrating the cleaning liquid with the cleaning liquid and the intermediate medium allowing sonic velocities, respectively, having a second difference different from the first difference.
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