Composite semipermeable membrane
US12161978B2 · kind B2 · utility
0Cited by
3References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 22, 2022 |
| Grant date | Dec 10, 2024 |
| 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 having a height of 10 nm or more, and in the fold structure, a ratio (T100/T25) is less than 0.95, where T25 is a thickness of the thin membrane in a region of 0% to 25% of the height of the protrusion and T100 is a thickness of the thin membrane in a region of 50% to 100% of the height of the protrusion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.