Oxygen absorbent packet
US4579223A · kind A · utility
79Cited by
4References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 27, 1984 |
| Grant date | Apr 1, 1986 |
| Priority date | — |
| Expiry date | Jan 27, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/23
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
An oxygen absorbent packet comprising an oxygen absorbent packaged and sealed in a double packaging material 6 comprised of a gas-permeable outer material layer 1 composed of a plastic film or transparent paper, a gas-permeable sealing layer 2, an inner material layer 3 composed of gas-permeable paper or nonwoven cloth, and a gas-permeable sealing layer 4, and also containing an air layer 5 between layers and 1 and 2 or between layers 2 and 3.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.