Asymmetric membranes
US9005496B2 · kind B2 · utility
2Cited by
33References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 1, 2012 |
| Grant date | Apr 14, 2015 |
| Priority date | — |
| Expiry date | Mar 5, 2033 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2325/04
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Asymmetric membranes comprising a first asymmetric porous zone including a first porous asymmetry that increases from the first exterior surface through the first porous zone of the bulk, and a second asymmetric porous zone including a second porous asymmetry that increases from the second exterior surface through the second porous zone of the bulk, wherein the first average pore size is larger than the second average pore size, as well as methods of making and using the membranes, are disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.