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:
Dec. 03, 2002
Filed:
Nov. 29, 2000
Applicant:
Inventors:
Wieland Mathes, Michelau, DE;
Ronald Neufert, Michelau, DE;
Dietmar Weisensel, Sinzing, DE;
Klaus Wenzlawski, Nürnberg, DE;
Assignee:
Siemens Aktiengesellschaft, Munich, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C01G 3/000 ; B01J 8/00 ; B01J 2/108 ; B01J 2/112 ; C01B 2/100 ;
U.S. Cl.
CPC ...
C01G 3/000 ; B01J 8/00 ; B01J 2/108 ; B01J 2/112 ; C01B 2/100 ;
Abstract
A method for cleaning diesel engine exhaust gas is described. The exhaust gas is passed over a catalytic converter with an active material which contains (% by weight) 70-95% TiO , 2-10% WO and/or MoO , 0.1-5% V O , 0.1-8% CaO, 0.1-8% Al O , 0.1-5% B O and 0.1-10% SiO . A reducing agent for a reduction of nitrogen oxides is metered into the exhaust-gas stream upstream of the catalytic converter.