PM 2.5 mask
US10322303B2 · kind B2 · utility
6Cited by
1References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 26, 2015 |
| Grant date | Jun 18, 2019 |
| Priority date | — |
| Expiry date | Feb 14, 2038 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA41D13/1192
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A mask against atmospheric PM 2.5 includes a mask body and a filter layer located in the mask body. The filter layer includes a carbon nanotube structure. The carbon nanotube structure includes a plurality of carbon nanotube films stacked and crossed with each other. The carbon nanotube structure includes a plurality of micropores. A diameter of the micropores ranges from about 1 micrometer to about 2.5 micrometers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.