07022646 is referenced by 37 patents and cites 17 patents.

A layered catalyst composite for controlling vehicular exhaust emissions is disclosed. The composite comprises a substrate such as cordierite, at least one bottom layer deposited on the substrate containing a precious metal component such as platinum and at least one NOx storage component present in the amount of about 0.3 to about 1.5 g/in3, and at least one top layer deposited on the bottom layer containing a precious metal component such as platinum and at least one NOx storage component present in the amount of about 0.0 to less than about 0.3 g/in3.

Title
Layered catalyst composite
Application Number
10/355779
Publication Number
7022646 (B2)
Application Date
January 31, 2003
Publication Date
April 4, 2006
Inventor
Yuejin Li
Edison
NJ, US
Agent
Richard A Negin
Assignee
Engelhard Corporation
NJ, US
IPC
B01J 23/42
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