Printable oxygen sensing composition
US9459241B2 · kind B2 · utility
2Cited by
7References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 18, 2008 |
| Grant date | Oct 4, 2016 |
| Priority date | — |
| Expiry date | Feb 20, 2030 |
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.