Composite fibrous filters
US5496627A · kind A · utility
36Cited by
11References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 16, 1995 |
| Grant date | Mar 5, 1996 |
| Priority date | — |
| Expiry date | Jun 16, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/68
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Disclosed are novel composite fibrous structures which have utility as filters. These composite structures have at least two layers. The first layer is a nonwoven fibrous structure made from uniquely grooved fibers. The second layer is of a fibrous material that offers high filter efficiency.. The first layer has significantly lower pressure drop and higher dust holding capacity than the second layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.