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. 13, 2011
Filed:
Sep. 12, 2007
Manoj Mukund Koranne, Clarksville, MD (US);
James Neil Pryor, West Friendship, MD (US);
David Monroe Chapman, Ellicott City, MD (US);
Rasto Brezny, Takoma Park, MD (US);
Manoj Mukund Koranne, Clarksville, MD (US);
James Neil Pryor, West Friendship, MD (US);
David Monroe Chapman, Ellicott City, MD (US);
Rasto Brezny, Takoma Park, MD (US);
W. R. Grace & Co.-Conn., Columbia, MD (US);
Abstract
The present invention is directed to an improved catalyst support and to the resultant catalyst suitable for treating exhaust products from internal combustion engines, especially diesel engines. The support of the present invention is a structure comprising alumina core particulate having high porosity and surface area, wherein the structure has from about 1 to about 40 weight percent silica in the form of cladding on the surface area of said alumina core. The resultant support has a normalized sulfur uptake (NSU) of up to 15 μg/m.