Exhaust gas purification apparatus
US10125650B1 · kind B1 · utility
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4References
22Claims
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Key dates
| Filing date | Dec 8, 2017 |
| Grant date | Nov 13, 2018 |
| Priority date | — |
| Expiry date | Dec 8, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An engine exhaust gas purification apparatus includes a three way catalyst disposed on an exhaust line, and which transforms harmful materials in exhaust gas to harmless materials by an oxidation-reduction reaction. The three way catalyst includes a first catalyst layer, a second catalyst layer, and a third catalyst layer laminated from an upper portion on a cordierite carrier, and the first catalyst layer comprises at least one platinum group metal and an oxygen non-storage material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.