Device for the purification of exhaust gas
US7442346B2 · kind B2 · utility
5Cited by
7References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 1, 1994 |
| Grant date | Oct 28, 2008 |
| Priority date | — |
| Expiry date | Jul 20, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
As a device for the purification of exhaust gas, a three-way catalyst A purifying hydrocarbon, carbon monoxide and nitrogen oxide in the vicinity of theoretical air-fuel ratio is disposed at an upstream side of the exhaust gas and an adsorption catalyst B provided with zeolite effective for the adsorption of hydrocarbon is disposed at a downstream side of the exhaust gas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.