Silver ternary alloy
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United States of America Patent
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N/A
Issued Date -
Jan 11, 2007
app pub date -
Jun 1, 2004
filing date -
Jun 3, 2003
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A firestain and tarnish-resistant ternary alloy of silver, copper and germanium contains from more than 93.5 wt % to 95.5 wt % Ag, from 0.5 to 3 wt % Ge and the remainder, apart from incidental ingredients (if any), impurities and grain refiner, copper. In order to further protect an article made from the alloy, it may be surface treated with an alkanethiol, alkyl thioglycollate, dialkyl sulphide or dialkyl disulphide.
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