Laminated nonwoven fabric, air purifier, and manufacturing method of laminated nonwoven fabric
US10173158B2 · kind B2 · utility
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10Claims
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Key dates
| Filing date | May 27, 2016 |
| Grant date | Jan 8, 2019 |
| Priority date | — |
| Expiry date | May 27, 2036 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B2307/732
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A laminated nonwoven fabric includes a first nonwoven fabric and a second nonwoven fabric. The first nonwoven fabric contains charged first fibers. The second nonwoven fabric contains second fibers, and is laminated on the first nonwoven fabric. A fiber diameter of the first fibers is larger than a fiber diameter of the second fibers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.