Membranes
US4217200A · kind A · utility
76Cited by
4References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 9, 1978 |
| Grant date | Aug 12, 1980 |
| Priority date | — |
| Expiry date | Aug 9, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02A20/124
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
According to the present invention there is provided a novel type of membrane unit for use in electrodialysis comprising a heat-sealable frame framing and forming an integral entity with an electrodialysis membrane. The frame may be a regular frame, or a two-frame structure framing a single membrane. The invention further relates to electrodialysis devices such as stacks, bags, cells, spiral units and the like based on such membrane units, which are hermetically bonded by heat-sealing to similar units or to polymeric or other members.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.