Method of detecting the permeability of an object to oxygen
US5316949A · kind A · utility
16Cited by
12References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 10, 1992 |
| Grant date | May 31, 1994 |
| Priority date | — |
| Expiry date | Dec 10, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/209163
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of detecting the permeability of an article to oxygen is disclosed. A fluorescent redox indicator, preferably riboflavin, is dispersed in a carrier and placed on an impermeable substrate. The article to be measured is placed adjacent to the carrier. Residual oxygen is removed, the redox indicator is photoreduced, the article and carrier are exposed to oxygen, and the indicator is exposed to UV light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.