Exhaust gas purification catalyst
US10344655B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Oct 7, 2015 |
| Grant date | Jul 9, 2019 |
| Priority date | — |
| Expiry date | Oct 7, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An exhaust gas purification catalyst having an excellent exhaust partition ability while reducing the increase in pressure loss. Exhaust gas purification catalyst includes a substrate having a wall-flow structure with partition wall, upstream coating section formed in portions of partition wall facing entrance cell, from exhaust inlet-side end in the extending direction of partition wall, and downstream coating section formed in portions of partition wall facing exit cell, from exhaust outlet-side end in the extending direction, having a length shorter than the entire length Lw of the partition wall. In downstream coating section, a catalytic metal is concentrated in the surface layer in contact with exit cell.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.