Apparatus for selectively applying a metal coating to the metall

Details Apparatus for selectively applying a metal coating to the metall Apparatus for selectively applying a metal coating to the metall

1976-04-06

1977-08-16

Tufariello, T. M.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204198, 204297R, C25D 1706, C25D 1718, C25D 1728

Patent

active

040424804

ABSTRACT:
A process and a device for selectively applying a metal coating, more particularly of a precious metal such as gold, to the metal parts of electrical components such as transistors, diodes and similar elements passed through an insulator means are provided for immersing the parts to be coated in a chemically active electrolyte and the parts not to be coated in a chemically inactive electrolyte and connecting the two electrolytes to the opposite polarities of the current source.

REFERENCES:
patent: 3658663 (1972-04-01), Fukanuma et al.
patent: 3897323 (1975-07-01), Schlotthauer

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