Filter catalyst
US7781371B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 7, 2005 |
| Grant date | Aug 24, 2010 |
| Priority date | — |
| Expiry date | Oct 17, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A filter catalyst of the present invention is comprised of a catalyst-supporting substrate 1, and catalytic portions 5, 6 for purifying an exhaust gas. The catalytic portions includes the first catalytic portion 5 for purifying HC, CO and NOx, and the second catalytic portion 6 for purifying the particulates. The first catalytic portion 5 is formed on a surface of at least a portion of the cellular wall 40, and the second catalytic portion 6 is formed on an inside surface of the pores. In the filter catalyst of the present invention purifying ability of the exhaust gas is increased, and the filter catalyst of the present invention can suppress rise of the pressure loss of the exhaust gas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.