Metamaterials technology for ore tracking
US11922252B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 14, 2021 |
| Grant date | Mar 5, 2024 |
| Priority date | — |
| Expiry date | Jun 11, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06N20/00
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The present invention is generally directed to systems, materials, and methods for ore tracking. In particular, the invention relates to metamaterial RFID tags that are chip-free and comprise RF metamaterials to produce unique spectral features when illuminated with microwave radiation. In one or more embodiments of the present invention, each of the metamaterial RFID tags includes one or more tag units that have a particular spectral response representing a one-bit code. As a result, each tag may comprise a specific code that is “assembled” from a plurality of tag units in a modular fashion. One or more embodiments of the present invention further includes a blast-tolerant package for one or more of the metamaterial RFID tags that enables such tags to survive blasting, crushing, and/or other forces inherent in mine operations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.