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:
Aug. 24, 1999
Filed:
Dec. 11, 1997
Applicant:
Inventors:
Felix Nitschke, Muchen, DE;
Jorg Wind, Karlsfeld, DE;
Assignee:
Daimler-Benz AG, Ottobrunn, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C25C / ;
U.S. Cl.
CPC ...
205617 ; 205763 ; 2042431 ; 204270 ;
Abstract
An apparatus and method for removing NO.sub.x from the exhaust of internal combustion engines. The apparatus has a porous absorbent body saturated with a liquid alkaline electrolyte for absorption of NO.sub.x as nitrate and nitrite, in which body electrodes are distributed pairwise for electrochemical decomposition of the nitrate and nitrite to form nitrogen. The method uses the apparatus of the invention to decompose nitrates and nitrites into diatomic nitrogen.