The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 24, 2004
Filed:
Mar. 19, 2002
Applicant:
Inventors:
Martyn Vincent Twigg, Cambridge, GB;
Robert James Brisley, Cambridge, GB;
Assignee:
Johnson Matthey Public Limited Company, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01B 2/126 ; C01B 2/136 ; C01B 3/120 ;
U.S. Cl.
CPC ...
C01B 2/126 ; C01B 2/136 ; C01B 3/120 ;
Abstract
A process for treating exhaust gas from internal combustion engines wherein the combustion exhaust gas contains HC, CO, O , soot and possibly NO . In treating the combustion exhaust gas, HC is oxidized to CO and H O: NO, if present, is oxidized to NO and soot is oxidized by reaction with NO . In addition, NO is generated by oxidizing ammonia and NO is introduced into the exhaust gas upstream of the oxidization of soot by reaction with NO .