Alloy with interference thin film and method for making the same

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United States of America

PATENT NO 12077839
SERIAL NO

18239747

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Abstract

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This invention provides an alloy with an interference thin film and the method for making the same. In one embodiment, said alloy consists essentially of 55.0-78.0 wt % Au, 8.0-24.0 wt % Ag, 8.0-24.0 wt % Cu and 0.0-3.0 wt % deoxidizer, and said interference thin film is grown on a surface of said alloy and has a thickness of less than 200 nm; wherein said interference thin film exhibits a patination color.

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Patent Owner(s)

Patent OwnerAddress
CHOW SANG SANG JEWELLERY COMPANY LIMITEDG/F-2/F 4/F 229 NATHAN ROAD & 2/F-3/F 231 NATHAN ROAD HONG KONG

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Cheung, Wai Kei Hong Kong, CN 5 0
Mak, Shuk Kwan Hong Kong, CN 7 2
Tong, Candice Wing Jong Hong Kong, CN 2 0

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