Exhaust gas purifying catalyst
US8609578B2 · kind B2 · utility
2Cited by
29References
16Claims
0Family size
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Key dates
| Filing date | Jun 30, 2009 |
| Grant date | Dec 17, 2013 |
| Priority date | — |
| Expiry date | Dec 7, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An exhaust gas purifying catalyst is constituted by: noble metal particles (1); first compounds (2) which support the noble metal particles (1); second compounds (3) different in type from the first compounds (2); and oxides (4) which surround the noble metal particles (1), the first compounds (2) and the second compounds (3). A median diameter of the first compounds (2) and a median diameter of the second compounds (3) satisfy a relationship of a following inequality:median diameter of first compounds<median diameter of second compounds.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.