Method for enhancing the adhesion of a layer for the protection of silver against tarnishing on a substrate comprising a silver surface

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United States of America Patent

PATENT NO 11345993
APP PUB NO 20200095673A1
SERIAL NO

16572203

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Abstract

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A method is described for protecting a silver surface against tarnishing. This involves depositing a layer of a silver-copper alloy on a substrate, which may be a silver substrate. The alloy comprises between 0.1 wt % and 10 wt % of copper relative to the total weight of the alloy. At least one layer of a metal oxide or a nitride having a thickness in a range of 1 nm to 200 nm is deposited on the alloy to protect against tarnishing. The presence of copper in the silver-copper alloy enhances the alloy's adhesion without altering the silver color.

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Patent Owner(s)

Patent OwnerAddress
THE SWATCH GROUP RESEARCH AND DEVELOPMENT LTDRUE DES SORS 3 2074 MARIN 2074

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Faure, Cedric Cortaillod, CH 10 52
Manasterski, Christian Colombier, CH 7 3
Spassov, Vladislav Praz, CH 9 78

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