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:
Feb. 17, 1976
Filed:
Dec. 06, 1973
Applicant:
Inventors:
Assignee:
Hitachi Shipbuilding and Engineering Co., Ltd., Osaka, JA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J / ; B01J / ; B01J / ;
U.S. Cl.
CPC ...
252464 ; 252465 ; 2524 / ; 2524 / ; 4232132 ; 4232135 ;
Abstract
Exhaust gas cleaning catalysts are produced by alloying copper and aluminum with at least one of the elements, nickel and chromium, and eluting by alkali or acid means aluminum from the cooled alloy surface. Small amounts of other metals from the fourth or fifth period V.about. VIII groups, may be added to the catalysts by alloying, or by impregnation, for enhanced catalytic properties. The catalysts exhibit improved reduction of NO and oxidation of CO in an exhaust gas stream, in the presence of Pb, SO.sub.2, moisture and hydrocarbons (H.C) and at relatively low temperatures.