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:
May. 31, 2022
Filed:
Aug. 04, 2017
Basf Corporation, Florham Park, NJ (US);
Jeff H. Yang, Glen Rock, NJ (US);
Wen-Mei Xue, Dayton, NJ (US);
Stanley A. Roth, Yardley, PA (US);
Kenneth E. Voss, Somerville, NJ (US);
Qi Fu, Moreland Hills, OH (US);
Subramanian Prasad, Edison, NJ (US);
Barbara K. Slawski, Medina, OH (US);
Jaya L. Mohanan, Edison, NJ (US);
Sandip D. Shah, East Brunswick, NJ (US);
BASF Corporation, Florham Park, NJ (US);
Abstract
Certain selective catalytic reduction (SCR) articles, systems and methods provide for high NOx conversion while at the same time low NO formation. The articles, systems and methods are suitable for instance for the treatment of exhaust gas of diesel engines. Certain articles have zoned coatings disposed thereon, for example, a zoned coating comprising an upstream zone comprising a coating layer comprising a steam-activated iron-containing molecular sieve and a downstream zone comprising a coating layer comprising a high copper-containing molecular sieve.