BLACK PLATED SUBSTRATE
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United States of America Patent
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Issued Date -
Jan 11, 2024
app pub date -
Dec 10, 2021
filing date -
Dec 11, 2020
priority date (Note) -
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Abstract
The present invention relates to a black plated substrate comprising a base-substrate and deposited thereon a layer stack, wherein the layer stack comprises a black chromium plating layer comprising on its surface a conversion layer having a depth of 30 nm or more, characterized in that the conversion layer does not comprise metallic chromium or comprises metallic chromium only up to 2 at.-%, based on the element chromium and the total number of chromium atoms in the conversion layer.
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