Spiral separation membrane element
US9504963B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 22, 2011 |
| Grant date | Nov 29, 2016 |
| Priority date | — |
| Expiry date | Nov 29, 2032 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2313/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A spiral separation membrane element (1A) includes: a wound body (3) including a separation membrane; a core tube (2) that penetrates the wound body (3) along the central axis of the wound body (3); and a joining portion (4) that joins the wound body (3) to the core tube (2) at at least one end face (3a) of the wound body (3). The joining portion (4) has a holding portion (41) disposed inwardly of the end face (3a) of the wound body (3) and an extending portion (42) formed integrally with the holding portion (41). The spiral separation membrane element (1A) further includes a restraining member (5A) that secures the extending portion (42) to the core tube (2).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.