Chemically active filter material
US6331351A · kind A · utility
57Cited by
13References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 22, 1999 |
| Grant date | Dec 18, 2001 |
| Priority date | — |
| Expiry date | Sep 22, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/249986
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention is an improved active filter material for use in removing target species such as NO.sub.x from a fluid stream. The filter of the present invention employs chemically active particles attached to a porous substrate by means of a polymer adhesive. A microporous layer is attached to at least one side of, or within, the porous substrate. The resulting filter material removes contaminates, such as dust, from the filter stream before the dust can clog active catalytic sites, as well as remove undesirable species by means of catalysis or reaction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.