Encoding method and decoding method using metal nanostructures
US10967666B2 · kind B2 · utility
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Key dates
| Filing date | Apr 27, 2018 |
| Grant date | Apr 6, 2021 |
| Priority date | — |
| Expiry date | May 28, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2207/101
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present disclosure relates to an encoding method and a decoding method using a chiral metal nanostructure. The encoding method according to an aspect of the present disclosure includes preparing a plurality of metal nanostructures having a chiral structure; obtaining the optical data of the plurality of metal nanostructures, and preparing a security medium including the plurality of metal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.