Patent · US Expired

NOx filter

US6855297B2 · kind B2 · utility

5Cited by
4References
13Claims
0Family size

Assignee

Inventors

Key dates

Filing dateMar 31, 2001
Grant dateFeb 15, 2005
Priority date—
Expiry dateFeb 17, 2022

Classification

  • Technology area (CPC B)Performing Operations; Transporting
  • CPC primaryB01D2257/404
  • WIPO fieldChemical engineering
  • WIPO sectorChemistry

Abstract

A filter includes a catalyst for oxidizing NOx to NO2 and an alkaline for adsorbing the NO2.

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