Nickel-free grey gold alloy
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United States of America Patent
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Sep 7, 2004
Grant Date -
Sep 12, 2002
app pub date -
Nov 12, 2001
filing date -
Dec 14, 1998
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A nickel-free white gold alloy comprises, expressed by weight, in addition to between 75% and 76% Au and between 5% and 14% Pd, between 7% and 17% of Cu, the proportion of Cu being approximately inversely proportional to that of Pd, and the balance being formed by at least one of the elements Ir, In, Ag, Zn, Ga, Re, Zr, Nb, Si, Ta and Ti.
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