Exhaust gas purifying apparatus for an internal combustion engine
US6517784B1 · kind B1 · utility
5Cited by
5References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 7, 2000 |
| Grant date | Feb 11, 2003 |
| Priority date | — |
| Expiry date | Jun 7, 2020 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01N2330/06
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Exhaust gas from internal combustion engines is treated with catalyst comprising an inorganic oxide supporter which supports at least one of noble metals selected from Rh, Pt, and Pd, alkali rare earth metals, rare earth metals, and magnesium in order to remove NOx effectively with superior durability of the catalyst notwithstanding the internal combustion engine is under a stoichiometric operation condition or a lean burning operation condition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.