Advanced fabric technology and filters
US10182946B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Oct 28, 2014 |
| Grant date | Jan 22, 2019 |
| Priority date | — |
| Expiry date | Apr 29, 2035 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2239/0421
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A filter material for entrapping particles and actively affecting the trapped particles within the filter. The fabric has a blend of hydrophilic superabsorbent fibers and non-superabsorbent hydrophilic fibers that is sufficiently porous as to allow gaseous flow through the fabric. The fabric having a thickness and the fabric has as a coating of a mixture of a chemically or physically active compound and a liquid carrier forming an active composition on both the outer surface of the hydrophilic superabsorbent fibers, and the hydrophilic superabsorbent fibers have a central volume also retaining the active composition. The central volume of the hydrophilic superabsorbent fibers acting as a reservoir for replacement of the active compound into the coating when concentration of active compounds in the coating are reduced to a concentration less than concentrations of the active compound within the central volume; and the liquid carrier is an aqueous liquid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.