Catalyzed soot filter
US7438739B2 · kind B2 · utility
5Cited by
26References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 26, 2005 |
| Grant date | Oct 21, 2008 |
| Priority date | — |
| Expiry date | Nov 12, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S264/48
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An improved catalyzed soot filter is comprised of a porous ceramic having, on at least a portion of the porous ceramic, an amorphous catalytic phase comprised of an alkali containing oxide glass having therein Si, Al or combination thereof. The improved catalyzed soot filter may be formed by contacting a porous ceramic such as mullite, silcon carbide or cordierite with an alkali containing compound that is a silicate, aluminate or alumino-siliicate and heating to a temperature sufficient to form an amorphous catalytic phase fused to at least a portion of the porous ceramic.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.