Patent · US Active

Catalytically active particulate filter

US11623179B2 · kind B2 · utility

3Cited by

51References

15Claims

0Family size

Assignee

UMICORE AG & CO. KG · DE

Inventors

Jan Schoenhaber · Darmstadt, DE
Naina Deibel · Pfungstadt, DE
Martin Roesch · Rodgau, DE
Stephanie Spiess · Darmstadt, DE

Key dates

Filing date	Dec 14, 2018
Grant date	Apr 11, 2023
Priority date	—
Expiry date	Apr 26, 2039

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/12
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

The present invention relates to a particulate filter which comprises a wall-flow filter of length L and two different catalytically active coatings Y and Z, wherein the wall-flow filter comprises channels E and A that extend in parallel between a first and a second end of the wall-flow filter and are separated by porous walls which form the surfaces OE and OA, respectively, and wherein the channels E are closed at the second end and the channels A are closed at the first end, and wherein the coatings Y and Z have the same oxygen storage components and the same carrier materials for noble metals. The invention is characterized in that the coating Y is located in the channels E on the surfaces OE and the coating Z is located in the channels A on the surfaces OA.

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