Nonwoven fabric, and dust collecting filter, medium of microorganism or biological tissue, and cosmetic article, each having the same
US10328665B2 · kind B2 · utility
1Cited by
1References
6Claims
0Family size
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Key dates
| Filing date | Dec 8, 2016 |
| Grant date | Jun 25, 2019 |
| Priority date | — |
| Expiry date | Jun 8, 2037 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B2305/026
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A nonwoven fabric contains a plurality of fibers having average fiber diameter Dave in a range from 10 nm to 3 μm, inclusive. The nonwoven fabric has a plurality of fusion portions among the plurality of fibers. The nonwoven fabric has a first principal surface and a second principal surface on an opposite side to the first principal surface. Average number Nh of the fusion portions observed per 500 μm2 on the first principal surface is six or more.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.