Exhaust gas-purifying catalyst
US8133839B2 · kind B2 · utility
1Cited by
7References
21Claims
0Family size
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Key dates
| Filing date | Jun 2, 2006 |
| Grant date | Mar 13, 2012 |
| Priority date | — |
| Expiry date | Mar 15, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An exhaust gas-purifying catalyst (1) contains a rare-earth element, an alkaline-earth element, zirconium and a precious metal, wherein an atomic ratio of the alkaline-earth element with respect to a sum of the rare-earth element and the zirconium is 10 atomic % or more, a part of the rare-earth element and a part of zirconium form a composite oxide with at least a part of the alkaline-earth element, and the composite oxide and a part of the precious metal form a solid solution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.