Oxygen sensors and their uses
US9222925B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 25, 2012 |
| Grant date | Dec 29, 2015 |
| Priority date | — |
| Expiry date | Jan 25, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/207497
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Oxygen sensors and their uses are disclosed, and more particularly to oxygen sensors for use in product packaging for storing an article in a packaging envelope under modified atmosphere conditions wherein the oxygen sensors comprise solid oxo-hydroxy metal ion materials, optionally modified with one or more ligands and/or optionally having polymeric structures. The sensors may be present in a hydrated, oxygen permeable matrix, for example formed from a material, such as gelatine. The sensors are useful in many technical fields, and find particular application in the field of food packaging as they are safely disposable (e.g. are environmentally friendly), cheap to manufacture, and provide detectable changes in the presence of oxygen that are easy to read.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.