Large pore synthetic polymer membranes
US6110369A · kind A · utility
24Cited by
36References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 29, 1997 |
| Grant date | Aug 29, 2000 |
| Priority date | — |
| Expiry date | Jul 29, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2325/34
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Highly asymmetric polymeric membranes with large pores which yield bubble points in the range of 0.5 to 25 psid and superior flow characteristics. The membranes can be cast from both metastable dispersions and from homogenous casting formulations. The technique of synthesis involves exposure of the cast membrane to humid air to create large surface pores on the exposed side.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.