Coating apparatus – Immersion or work-confined pool type – With tank structure – liquid supply – control – and/or...
Patent
1984-06-21
1985-08-06
Smith, John D.
Coating apparatus
Immersion or work-confined pool type
With tank structure, liquid supply, control, and/or...
210205, 210207, 427306, C23C 302
Patent
active
045328870
ABSTRACT:
A method and apparatus for extending the useful life of an acqueous acid chloride solution that serves as a protective bath for an activator dip bath such as used in electroless copper plating. Means are provided for recirculating the acidic chloride solution over metallic tin to precipitate copper ions from the solution. The precipitated copper is filtered from the solution to extend its useful life.
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patent: 3669853 (1972-06-01), Beach
patent: 3694250 (1972-09-01), Grunwald
patent: 3819497 (1974-06-01), Grunwald
patent: 3865623 (1975-02-01), Allen
patent: 3905827 (1975-09-01), Goffredo
patent: 3922208 (1975-11-01), Cordone
General Motors Corporation
Smith John D.
Wallace Robert J.
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