Port tube closure assembly
US6869653B2 · kind B2 · utility
14Cited by
128References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 8, 2001 |
| Grant date | Mar 22, 2005 |
| Priority date | — |
| Expiry date | Jan 8, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31931
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention provides a flowable material container closure assembly having a port tube and a membrane tube. The port tube (I) has a first layer and a second layer, (A) the first layer is a polymer blend and (B) the second layer is disposed coaxially within the first layer; and the membrane tube (II) is disposed coaxially within the port tube, the membrane tube has an outer layer, a core layer and an inner layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.