Ink composition
US10583666B2 · kind B2 · utility
0Cited by
7References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 10, 2015 |
| Grant date | Mar 10, 2020 |
| Priority date | — |
| Expiry date | Sep 19, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01K11/16
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to an inkjet ink including a photo-chromic colorant and a UV absorber. The ink may be used as a time-temperature indicator and is particularly useful in packaging food and/or drink to provide an indication of the quality of the contents.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.