Fluoropolymer membrane
US7378020B2 · kind B2 · utility
13Cited by
34References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 23, 2003 |
| Grant date | May 27, 2008 |
| Priority date | — |
| Expiry date | Jan 8, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S264/47
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A porous fluoropolymer membrane comprising a first surface, a second surface, nodes and free fibrils, wherein one of the first and second surfaces has a greater number of free fibrils per unit area of the surface than the other of the first and second surfaces, is disclosed. A process for preparing porous fluoropolymer membranes is also disclosed, comprising splitting a thicker membrane in a dimension different from, e.g., perpendicular to, its thickness dimension.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.