Card – picture – or sign exhibiting – Check – label – or tag – Coin or token type
Patent
1983-06-13
1985-03-19
Rutledge, L. Dewayne
Card, picture, or sign exhibiting
Check, label, or tag
Coin or token type
428672, 428629, 428680, 148 315, B32B 1502
Patent
active
045050600
ABSTRACT:
A process for producing a composite material comprising a base having a nickel surface and a gold layer metallurgically bonded to the nickel of the base and having sufficient nickel to increase the hardness of the gold layer but insufficient to significantly destroy the distinctive color of the gold layer comprises depositing the gold layer on the nickel and annealing the composite structure to provide the metallurgical bond between the nickel and gold and to interdiffuse said metals, and the composite structure obtained by said process. The composite material is particularly useful as a coinage structure.
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Bell James A. E.
Conard Bruce R.
Hope Douglas A.
Inco Limited
Kenny Raymond J.
Leff Miriam W.
Rutledge L. Dewayne
Zimmerman John J.
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