Multilayer colourimetric indicator
US12372399B2 · kind B2 · utility
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4References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 2, 2021 |
| Grant date | Jul 29, 2025 |
| Priority date | — |
| Expiry date | Jun 6, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J1/0488
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus 5 comprises a first layer 20 comprising a colourimetric indicator; and a second layer 30 provided on at least a portion 22 of the first layer 20, at least a portion of the second layer 30 being configured to block and/or absorb a radiation to which the indicator is sensitive or reactive and being configured to be substantially transparent to visible light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.