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Patent AT-E400449-T1: [Translated] ANTI-COUNTERFEIT SECURITY FEATURE WITH COLOR SHIPPING EFFECT

Published by National Center for Biotechnology Information (NCBI) | U.S. Department of Health & Human Services | Catalog Last Checked: July 31, 2026 at 09:34 PM | Dataset Last Updated: September 06, 2025
A tamper-proof security element includes at least one polymer spacer layer and two metal cluster layers. One or more of the layers, in addition to their function, fulfills a security feature in their color-shift set-up.

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