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. 25, 2010
Filed:
Sep. 02, 2005
Alfred Helmut Punke, Walle, DE;
Torsten Wolfgang Mueller, Hannover, DE;
Michel Deeba, East Brunswick, NJ (US);
Kenneth Edwin Voss, Somerville, NJ (US);
John Joseph Steger, Pittstown, NJ (US);
Yiu Kwan Lui, Parlin, NJ (US);
Alfred Helmut Punke, Walle, DE;
Torsten Wolfgang Mueller, Hannover, DE;
Michel Deeba, East Brunswick, NJ (US);
Kenneth Edwin Voss, Somerville, NJ (US);
John Joseph Steger, Pittstown, NJ (US);
Yiu Kwan Lui, Parlin, NJ (US);
BASF Catalysts LLC, Florham Park, NJ (US);
Abstract
The invention provides a catalyzed soot filter formed on a wall flow substrate having internal walls coated with catalyst compositions. The soot filter maintains a homogeneous flow of the exhaust gases through the internal walls of the substrate along the length of the filter due to the coating design. Both the efficiency and the durability of the catalytic function are increased over conventionally designed catalyzed soot filters. The catalyzed soot filter provides an integrated function for simultaneously treating the gaseous components of the exhaust (e.g., CO and HC) and the particulate matter deposited in the filter.