Multi-stage nasal filter and method of tuning the filter to a predetermined most penetrating particle size
US10946224B2 · kind B2 · utility
2Cited by
16References
11Claims
0Family size
Inventor
Key dates
| Filing date | Mar 2, 2020 |
| Grant date | Mar 16, 2021 |
| Priority date | — |
| Expiry date | Mar 2, 2040 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2239/125
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Respiratory devices and methods for their manufacture and use are disclosed. The device features a resiliently deformable element configured to form a perimeter seal with the inner nostril wall and to swab the distal portion of the internal nostril region with a disinfectant during device installation. A first filter stage includes a first filter layer characterized by first geometric convolutions and a first MPPS1 value; and a second filter stage includes a second filter layer characterized by second geometric convolutions and a second MPPS2 value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.