Ultra-thin integral composite membrane
US6254978A · kind A · utility
75Cited by
24References
60Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 8, 1998 |
| Grant date | Jul 3, 2001 |
| Priority date | — |
| Expiry date | Jul 8, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31544
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An integral composite membrane is provided including a porous polymeric membrane impregnated with a perfluoro ion exchange material to make the micropores of the membrane occlusive and a surfactant having a molecular weight greater than 100 wherein the thickness of the composite membrane is less than 0.025 mm. Methods for making and regenerating the integral composite membrane are also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.