Media for hot gas filtration
US8652230B2 · kind B2 · utility
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14References
1Claims
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Key dates
| Filing date | Dec 8, 2011 |
| Grant date | Feb 18, 2014 |
| Priority date | — |
| Expiry date | Jan 28, 2032 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D39/14
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A filter fabric having improved filtering properties for hot gas filtration containing a nonwoven aramid mat The mat has a basis weight of at least 9.7 ounces per square yard (330 grams per square meter) and is characterized by a pore size distribution in which the number of pores in a given range as measured by ASTM F316-03 test method is plotted against pore size. In a preferred embodiment, the percentage of pores having a size in between 10 and 26 microns is greater than 50% while the percentage of pores having a size of greater than 50 microns is less than 0.5%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.