Catalyzed filter for treating exhaust gas
US9687785B2 · kind B2 · utility
8Cited by
34References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 30, 2014 |
| Grant date | Jun 27, 2017 |
| Priority date | — |
| Expiry date | May 30, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Provided is a diesel particulate filter capable of removing soot from an exhaust gas while operating at low backpressure, the filter comprising (a) a wall-flow filter substrate having a mean pore size, an inlet side, an outlet side, and a porous interior between the inlet and outlet sides; and (b) a catalyst composition coated from the outlet side of the substrate, wherein the catalyst composition has a d50 particle size distribution, wherein the d50 particle size distribution is greater than or equal to the mean pore size divided by 4.9, and wherein the inlet side is substantially free of a catalyst coating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.