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US 4,379,738 AGranted
Electroplating zinc
AssigneeBell Telephone Laboratories, Incorporated
InventorPaul A. Kohl
Life of this patent
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Abstract
An electroplating process is described for plating various metals and alloys in which certain organic substances are added to the plating solution. This permits high plating rates with excellent plating results, including smooth bright finishes, freedom from dendritic growth and constant plating thickness over wide areas.
Claims6
A process for electroplating metallic substances consisting essentially of zinc comprising the step of passing current through an anode, aqueous plating solution and cathode characterized in that the plating bath comprises an heterocyclic additive consisting essentially of phenolphthalein.
Dependencies are inferred from the claim text.