Resist stripping process
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Aug 27, 2002
Issued Date -
N/A
app pub date -
Oct 3, 2000
filing date -
Feb 26, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A process for removing patterned negative working resist from the surface of a substrate during manufacture of printed wiring boards is disclosed. The process includes the steps of contacting the patterned resist with a stripping solution containing an alkalinity source as well as a source of ammonium ions. The stripping solution is characterized in that it does not contain volatile organic compounds (VOCs).
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