Patent · US Active

Catalytically active particulate filter

US12161998B2 · kind B2 · utility

0Cited by

57References

20Claims

0Family size

Assignee

UMICORE AG & CO. KG · DE

Inventors

Gabriela KUCEROVA · Senden, DE
Jan Schoenhaber · Darmstadt, DE
Naina Deibel · Pfungstadt, DE
Meike Antonia GOTTHARDT · Frankfurt, DE

Key dates

Filing date	Mar 29, 2019
Grant date	Dec 10, 2024
Priority date	—
Expiry date	Dec 23, 2040

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 for removing particles, carbon monoxide, hydrocarbons and nitrogen oxides from the exhaust gas from internal combustion engines operated with a stoichiometric air-fuel mixture. Two coatings Y and Z are located in the porous walls and are present from the first end of the wall-flow filter over the entire length L of the particulate filter. Both contain active alumina, at least one cerium-zirconium-rare earth metal mixed oxide and at least one platinum group metal.

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