Evacuatable, heat sealable package and method of using the same
US6550223B2 · kind B2 · utility
9Cited by
23References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 2, 2001 |
| Grant date | Apr 22, 2003 |
| Priority date | — |
| Expiry date | Mar 2, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D81/2023
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
Vacuum packaging methods and materials are claimed. The materials are fusible and can form a part of a heat seal closure for non-rigid and semi-rigid packages. The methods are suitable for packages containing materials generally, and are well suited for those containing granular materials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.