Surface tension driven filtration
US11305236B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 4, 2020 |
| Grant date | Apr 19, 2022 |
| Priority date | — |
| Expiry date | Sep 4, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/491
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Disclosed is a device for extracting a filtrate from a liquid sample that includes one or more filtration membranes and, in physical contact with a portion of the downstream surface(s) of the filtration membrane(s), a soluble matrix possessing a capillary drawing force sufficient to draw filtrate through the at least one filtration membrane and into the soluble matrix, causing the soluble matrix to at least partially dissolve or disintegrate in the filtrate, whereby the filtrate is released. Various configurations, including device configurations having two filtration membranes with a soluble matrix in between or having a tubular filtration membrane at least partially surrounding or surrounded by a soluble matrix are described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.