Composite semipermeable membrane
US12186711B2 · kind B2 · utility
0Cited by
3References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 22, 2022 |
| Grant date | Jan 7, 2025 |
| Priority date | — |
| Expiry date | Apr 22, 2042 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02A20/131
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention relates to a composite semipermeable membrane including: a support membrane; and a separation functional layer provided on the support membrane, in which the separation functional layer includes a thin membrane, the thin membrane has a fold structure including a plurality of protrusions, an actual length L of the thin membrane per 1 μm length of the support membrane in a cross-sectional direction perpendicular to a membrane surface is 3.0 μm or more, and a thickness of the thin membrane in the protrusion is 15 nm or more.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.