Catalyst converter
US9782723B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 20, 2014 |
| Grant date | Oct 10, 2017 |
| Priority date | — |
| Expiry date | Mar 20, 2034 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01N2510/0684
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A catalyst converter includes: a substrate (1) having a cell structure formed of a center area (1A) having the highest cell density, a peripheral area (1C) having the lowest cell density, and an intermediate area (1B) having the cell density between that of the center area and that of the peripheral area; a first catalyst layer formed in the center area (1A); a second catalyst layer formed in the intermediate area (1B); and a third catalyst layer formed in the peripheral area (1C). A length in a longitudinal direction of the second catalyst layer is longer than that of the first catalyst layer. A length in the longitudinal direction of the third catalyst layer is longer than that of the second catalyst layer. A ratio of the length in the longitudinal direction of the first catalyst layer to the length of the substrate is 65% or more.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.