Selectively permeable membrane on hollow cord
US3948781A · kind A · utility
13Cited by
3References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 10, 1974 |
| Grant date | Apr 6, 1976 |
| Priority date | — |
| Expiry date | May 10, 1994 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D69/1071
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A selectively-permeable tubular element is provided which comprises an essentially tubular sheath of uniform textile material, the whole of which has been heated to a uniform temperature such that the sheath can subsequently be bent in an arc of radius of curvature not exceeding about 10 cm while retaining substantially circular cross-section, with a selectively permeable membrane applied to the sheath.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.