Method of electroless gold plating

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United States of America Patent

PATENT NO 9388497
SERIAL NO

14414655

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Abstract

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There is provided a method of electroless gold plating, wherein the method includes a step of forming an underlying alloy layer on a base material and a step of forming a gold plate layer directly on the underlying alloy layer by means of electroless reduction plating using a cyanide-free gold plating bath, wherein the method is characterized in that the underlying alloy layer is formed of an M1-M2-M3 alloy (where M1 is at least one element selected from Ni, Fe, Co, Cu, Zn and Sn, M2 is at least one element selected from Pd, Re, Pt, Rh, Ag and Ru, and M3 is at least one element selected from P and B).

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Patent Owner(s)

Patent OwnerAddress
TOYO KOHAN CO LTD2-18-1 HIGASHI-GOTANDA SHINAGAWA-KU TOKYO

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Mukai, Nobuaki Yamaguchi, JP 19 28

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