Metal, ceramic, or ceramic-coated transaction card with window or window pattern and optional backlighting
US11669708B2 · kind B2 · utility
0Cited by
79References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 25, 2021 |
| Grant date | Jun 6, 2023 |
| Priority date | — |
| Expiry date | Mar 25, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K19/07747
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A transaction card includes at least one metal layer having one or more apertures therein. A light guide is disposed beneath the metal layer. The light guide has a light output and a light input. The light output is positioned to transmit light through at least the one or more apertures of the metal layer. At least one LED is positioned to transmit light into the light input of the light guide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.