Patent · US Expired

Filter assembly for an exhaust gas purification system

US6923941B2 · kind B2 · utility

15Cited by

5References

20Claims

0Family size

Assignee

Purem Abgassysyteme GmbH & Co. KG · DE

Inventors

Georg Huthwohl · Soest, DE
Bernd Maurer · Balve, DE
Bernd Krutzsch · Köngen, DE
Gunter Wenninger · Stuttgart, DE

Key dates

Filing date	Jul 19, 2001
Grant date	Aug 2, 2005
Priority date	—
Expiry date	Aug 1, 2023

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S55/30
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A filter assembly for an exhaust gas purification system of an internal combustion engine. The filter assembly, has porous filter plate elements, connected with each other on their outer as well as on their inner peripheries, forming in pairs as filter pockets. Catalytic agents such as ammonia are applied to the filter pockets on the outer and/or inner sides to oxidize carbon black contained in the combustion gas. In particular, this filter assembly is compact and can be used for diesel engines of motor vehicles.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.