Catalyzed filter for treating exhaust gas
US9687786B2 · kind B2 · utility
5Cited by
33References
22Claims
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 inlet side of the substrate, wherein the catalyst composition has a d50 particle size distribution, wherein the d50 particle size distribution is less than the mean pore size divided by 4.9, and wherein the outlet side is substantially free of a catalyst coating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.