Frequency selective security paper and method for manufacturing the same
US12271771B2 · kind B2 · utility
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7Claims
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Key dates
| Filing date | Jun 12, 2023 |
| Grant date | Apr 8, 2025 |
| Priority date | — |
| Expiry date | Jun 12, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H7/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention relates to a frequency selective security paper and a method for manufacturing the same. The frequency selective security paper according to an exemplary embodiment of the present invention may include: a drafting paper for forming a paper; a frequency resonator formed on one surface of the drafting paper and formed in a form of a meandering line or a capacitor so as to resonate to a designated frequency when passing through a security search device; and a coating liquid including the frequency resonator therein and formed on the drafting paper.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.