Fluorescent security ink using carbon nanotubes
US7682523B2 · kind B2 · utility
20Cited by
6References
14Claims
0Family size
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Key dates
| Filing date | Sep 2, 2004 |
| Grant date | Mar 23, 2010 |
| Priority date | — |
| Expiry date | Jul 5, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/25
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention is directed toward fluorescent inks and markers comprising carbon nanotubes. The present invention is also directed toward methods of making such inks and markers and to methods of using such inks and markers, especially for security applications (e.g., anti-counterfeiting). Such inks and markers rely on the unique fluorescent properties of semiconducting carbon nanotubes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.