Customizable supplies for high temperature exposure monitoring
US12247884B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 22, 2021 |
| Grant date | Mar 11, 2025 |
| Priority date | — |
| Expiry date | Aug 17, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01K3/04
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An excess heat exposure indicator and methods for making the same are disclosed. The excess heat exposure indicator includes a print media substrate comprising an indicator region, a data region, at least one first thermochromic composition is provided on the substrate within the indicator region of the substrate, a second thermochromic composition is provided on the substrate within the data region, the second thermochromic composition configured to change color state from a third color state to a fourth color state when heated above a second temperature threshold, the indicator region is configured to be selectively treated with heat above the first temperature threshold to place a first portion of the indicator region in the second color state, different than the first color state, forming a visible indicia, the visible indicia configured to change appearance when the indicator region is subsequently exposed to a temperature above the first temperature threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.