Reversed phase membranes
US4781873A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 17, 1986 |
| Grant date | Nov 1, 1988 |
| Priority date | — |
| Expiry date | Nov 17, 2006 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2325/36
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A reversed phase analogue of at least part of a first membrane having substantially interconnected pores is formed by first filling at least some of the pores of the first membrane with a fluid that will form the analogue membrane and then forming the analogue membrane in the pores of the first membrane. The first membrane is then removed from the analogue membrane. The structure of the analogue membrane is of different morphology from that of the first membrane and the reversed phase nature arises because it is the pores of the first membrane which lead to the formation of the walls of the reversed phase membrane and it is the walls of the pores of the first membrane which lead to the formation of the pores of the reverse phase membrane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.