Method of manufacturing a body having a gold pattern and body ma

Details Method of manufacturing a body having a gold pattern and body ma Method of manufacturing a body having a gold pattern and body ma

1977-08-29

1978-12-26

Tufariello, T. M.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

C25F 314

Patent

active

041315251

ABSTRACT:
The invention relates to a method of manufacturing a body having a gold pattern in which an etchant-resistant and electrically insulating masking layer is provided locally on the surface of a gold layer present on the body and parts of the surface of the gold layer not covered by the masking layer are subjected to a chemical etching treatment in an etching bath in which the gold pattern is formed. According to the invention, the gold layer during the chemical etching treatment is given a potential with respect to an electrode in the etching bath and this potential is adjusted to a value such that the etch rate is maintained at a rate no higher than the rate of the chemical etching treatment.

REFERENCES:
patent: 3267013 (1966-08-01), Mathias et al.
patent: 3325384 (1967-06-01), Frantzen
patent: 3418226 (1968-12-01), Marinace

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