Printable oxygen sensing composition
US10247712B2 · kind B2 · utility
0Cited by
9References
16Claims
0Family size
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Key dates
| Filing date | Sep 1, 2016 |
| Grant date | Apr 2, 2019 |
| Priority date | — |
| Expiry date | Jul 28, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24802
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An ink composition comprising an oxygen sensitive dye capable of fluorescing in a manner proportional to oxygen content; and a polymer matrix for the dye, the polymer matrix having units with pendant sulphonic acid or phosphonic acid groups or salts or esters of such groups, can be used with an appropriate meter to measure the oxygen content of packages in a non-invasive manner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.