Ethylene-vinyl alcohol hollow fiber membranes
US6793820B1 · kind B1 · utility
12Cited by
4References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 19, 2001 |
| Grant date | Sep 21, 2004 |
| Priority date | — |
| Expiry date | Jul 19, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2325/36
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
EVAL microporous hydrophilic hollow fiber membranes are formed from a casting dope that includes low and high molecular weight pore-formers. Post-fabrication treatment includes stretching, hot water soaking and crosslinking.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.