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US10464003B2 · kind B2 · utility
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0References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 6, 2017 |
| Grant date | Nov 5, 2019 |
| Priority date | — |
| Expiry date | Jul 6, 2038 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2259/4508
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
There is provided a filter which includes a fiber layer and an adsorbent. The fiber layer includes fiber. The adsorbent is held in the fiber and adsorbs a chemical substance. The filter is divided into a plurality of sections by a fold. Each of the plurality of sections includes a first end portion positioned along the fold, a center portion adjacent to the first end portion, and a second end portion which counterposes the first end portion with the center portion interposed. The density of the adsorbent at the center portion is greater than the density of the adsorbent at the first end portion and at the second end portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.