Metallic materials with embedded luminescent particles
US9567688B2 · kind B2 · utility
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16References
10Claims
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Key dates
| Filing date | Oct 13, 2015 |
| Grant date | Feb 14, 2017 |
| Priority date | — |
| Expiry date | Oct 13, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12493
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Formation of an authentication element by deposition of a metal layer with embedded particles on a metal substrate, wherein the embedded particles are configured to convert energy from one wavelength to another. The embedded particles may be upconverters, downconverters, or phosphorescent phosphors, which can be detected and measured with analytical equipment when deposited in the metal layer. A metal substrate may include coinage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.