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:
Mar. 08, 2022
Filed:
Feb. 18, 2019
Basf Corporation, Florham Park, NJ (US);
Kenneth E. Voss, Iselin, NJ (US);
Kevin A. Hallstrom, Iselin, NJ (US);
Sandip D. Shah, Iselin, NJ (US);
David M. Youngren, Union, NJ (US);
Andrew Thoms, Iselin, NJ (US);
M. Shahjahan Kazi, Iselin, NJ (US);
Robert Dorner, Hannover, DE;
BASF Corporation, Florham Park, NJ (US);
Abstract
A system for treatment of an exhaust gas stream from an engine is provided, containing an upstream selective catalytic reduction (SCR) catalyst, which receives the exhaust gas stream without any intervening catalyst, a diesel oxidation catalyst (DOC) positioned downstream thereof; a catalyzed soot filter (CSF) downstream of the diesel oxidation catalyst; a second SCR catalyst positioned downstream of the catalyzed soot filter; and an ammonia oxidation (AMOx) catalyst. The application also describes use of such systems to reduce nitrogen oxides (NOx) and hydrocarbons (HC) in an exhaust gas stream.