Oxygen detector sheet and oxygen detecting agent using the same, and method for manufacturing oxygen detector sheet
US7921798B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 26, 2005 |
| Grant date | Apr 12, 2011 |
| Priority date | — |
| Expiry date | Feb 11, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/207497
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The oxygen detecting device (10) of the present invention includes an oxygen detector sheet having a sheet carrier (13) having a porous inorganic material filled therein which has been impregnated with an oxygen detecting fluid, and a film (11) having a predetermined oxygen transmittance for covering and sealing the sheet carrier (13). Since the sheet having the porous inorganic material filled therein is adopted, the oxygen detecting device has an excellent light resistance, leading to clear recognition of coloration for a long period of time. Because of excellent light resistance, the device keeps excellent property even after long exposure to a fluorescent lamp in a display case for displaying foods. Thus the device is suitable for checking quality of commercial products.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.