Heat history indicator
US4753188A · kind A · utility
23Cited by
14References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 24, 1982 |
| Grant date | Jun 28, 1988 |
| Priority date | — |
| Expiry date | May 24, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01K11/06
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A process monitoring heat history indicator in the form of a mixture of a first particulate component with a first characteristic color and a second particulate component with a second characteristic color. The first component includes a solvent system which melts at one or more defined temperatures so that when the mixture is heated to a selected temperature, it melts and wets the surface of the second component.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.