Apparatus and method using an electric field for creating uniform nanofiber patterns on nonconductive materials to enhance filtration and for embedment of fibers into materials for other applications
US10188973B2 · kind B2 · utility
2Cited by
33References
20Claims
0Family size
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Key dates
| Filing date | Dec 6, 2013 |
| Grant date | Jan 29, 2019 |
| Priority date | — |
| Expiry date | Apr 5, 2034 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2239/069
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A filtration device including a base filtration material having openings for fluid flow there through and a filtration medium. The filtration medium includes a plurality of patterned nanofibers formed on the base filtration material. The filtration medium has a figure of merit greater than 30 kPa−1, where the figure of merit is given by −Log (Pt)/ΔP, where Pt is the fractional penetration of a specific aerosol particle diameter and ΔP is a pressure drop across the filtration medium corresponding to a face velocity of 5.3 cm/s and particle size of 0.3 microns.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.