Semipermeable membrane cartridge for use with a pressure container
US4548714A · kind A · utility
35Cited by
3References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 11, 1983 |
| Grant date | Oct 22, 1985 |
| Priority date | — |
| Expiry date | Oct 11, 2003 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D67/0097
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An improvement in a membrane cartridge for insertion into a pressure-resistant container and having a central passageway holding a permeate collection tube. A cartridge is formed, at least in part, by a spiral winding of a laminate leaf comprising semipermeable membrane sheet material, permeate transfer sheet material, and porous grid sheet material. An extension on the leaf of the porous grid material is of sufficient length to encompass the circumference of the cartridge when the cartridge is positioned inside the container. The cartridge may have an outer wrapping of water-soluble sheet material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.