Patent classifications
H
ELECTRICITY
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H05
ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
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H05K
PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
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2203/00
Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
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H05K2203/07
Treatments involving liquids, e.g. plating, rinsing
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H05K2203/0779
characterised by the specific liquids involved
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H05K2203/0786
Using an aqueous solution, e.g. for cleaning or during drilling of holes
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H05K2203/0793
Aqueous alkaline solution, e.g. for cleaning or etching
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