Olin Hunt Specialty Products Inc.

Fry's Metals, Inc.

Olin Corporation

Anthony M Piano

Randolfo Galvez

Frank Polakovic

Glenn W Cupta

Bismuth coating protection for copper

Copper-containing surfaces, such as a copper surface for use in an electrical circuit, are protected by the provision of a bismuth coating.

Described herein is a process for treating the tooling holes or slots which have been coated with a carbon black dispersion in a nonconductive material which comprises removing said carbon black with an aqueous solution containing:

Process for preparing nonconductive substrates

In the process for electroplating the walls of through holes in a laminated printed wiring board comprised of at least one non-conducting layer laminated to at least two separate conductive metal layers, which comprises the steps:

Process for preparing the through hole walls of a printed wiring board

An improvement to the process for electroplating the walls of through holes in a laminated printed wiring board which comprises:

An improvement to the process for electroplating a conductive metal layer to the surface of a non-conductive material which comprises:

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Lodi, NJ, United States of America

Anthony M Piano