Reinforced, three zone microporous membrane
US6264044A · kind A · utility
80Cited by
17References
75Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 18, 1998 |
| Grant date | Jul 24, 2001 |
| Priority date | — |
| Expiry date | Mar 18, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B2307/72
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A three zone, reinforced, continuous, geometrically symmetrical microporous membrane including a porous support material encapsulated within a middle zone disposed between an upper zone and a lower zone wherein at least one of the three zones has a pore size at least about twenty (20%) percent greater than the pore size of the other two zones is disclosed. Apparatus and methods for fabricating three zone reinforced, continuous, geometrically symmetrical, microporous membrane are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.