Exhaust gas purifying catalyst
US9833771B2 · kind B2 · utility
13Cited by
1References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 11, 2014 |
| Grant date | Dec 5, 2017 |
| Priority date | — |
| Expiry date | Nov 11, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The exhaust gas purifying catalyst presented here includes a substrate and a catalyst coat layer formed on the surface of the substrate. The catalyst coat layer is formed in a laminate structure having two layers, with a first layer being nearer to the surface of the substrate and a second layer being relatively further from this surface. The second layer includes a carrier and a noble metal supported on the carrier. The first layer is a noble metal-free layer that does not contain a noble metal but does contain an OSC material having oxygen storage capacity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.