Graphene-based micro-scale identification system
US10157338B2 · kind B2 · utility
1Cited by
1References
18Claims
0Family size
Assignee
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Key dates
| Filing date | May 4, 2016 |
| Grant date | Dec 18, 2018 |
| Priority date | — |
| Expiry date | May 4, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K19/06046
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A system for labeling an object uses at least one object label made from a material that absorbs and reflects incident energy uniformly across all wavelengths of incident energy at a ratio proportional to a thickness of the material and that includes a pattern having variations in the thickness of the material along at least one of two orthogonal directions across the label. An interrogator directs a predetermined wavelength of radiation to the at least one label, and a reader to receives reflected radiation from the label at the predetermined wavelength and interprets the reflected radiation to recognize the pattern.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.