Electrowinning of direct metallization accelerators
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United States of America Patent
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Nov 29, 1994
Grant Date -
N/A
app pub date -
Sep 13, 1993
filing date -
Sep 13, 1993
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A specially controlled electrolytic process for regenerating for reuse solutions such as the post activator solution used in the direct metallization process for making printed circuit boards is disclosed whereby the contaminant tin level of the operating solution is controlled at desired levels.
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