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. 25, 1992
Filed:
Sep. 18, 1990
Applicant:
Inventors:
Michael V Ernest, Catonsville, MD (US);
Dean A Denton, Baltimore, MD (US);
Richard A Carman, Green Bay, WI (US);
Assignee:
W. R. Grace & Co.-Conn., New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J / ; B01J / ; B01J / ;
U.S. Cl.
CPC ...
502320 ; 502313 ; 502324 ; 502332 ; 502333 ; 502334 ; 502339 ; 502439 ;
Abstract
A catalyst for control of hydrocarbon emission with improved resistance to phosphorus, sulfur, halogen and silicon poisoning comprising a refractory oxide support impregnated with 0.5 to 20% by weight chromium oxide or manganese oxide or a mixture thereof, and a catalytically effective amount of one or more platinum group metals. The preferred refractory oxide support is alumina. The preferred platinum group metals include Pt, Pd, Ir and Rh.