Thermochromic indicator
US8911861B2 · kind B2 · utility
4Cited by
21References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 11, 2009 |
| Grant date | Dec 16, 2014 |
| Priority date | — |
| Expiry date | Dec 11, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/2139
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A thermochromic indicator includes a coating on the substrate. The coating comprising a solid crystalline particles having a melting point of 0-130° C. At temperatures below the melting point, the coating is opaque. At temperatures above the melting point, the coating becomes translucent. The change in opacity can be reversible or irreversible.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.