Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – With rotor
Patent
1995-09-18
1998-03-03
Karlsen, Ernest F.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
With rotor
250302, G01N 130
Patent
active
057239762
ABSTRACT:
Minute defects in an encapsulated electronic component are detected by immersing the component in an aqueous solution of a water-soluble fluorescent substance having the property of fluorescing when moistened and stopping fluorescing when dry. The solution is allowed to permeate into minute defects of the component whereupon the component is opened. The defects are detected by observing an image of the component while moistening and drying the component to detect fluorescing and stopping fluorescing.
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Norimatsu Tetsuo
Yoshida Toshiaki
Blecker Ira D.
International Business Machines - Corporation
Karlsen Ernest F.
Kobert Russell M.
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