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. 13, 2002
Filed:
Dec. 10, 1999
Applicant:
Inventors:
Hideharu Iwakuni, Hiroshima, JP;
Makoto Kyogoku, Hiroshima, JP;
Hiroshi Yamada, Hiroshima, JP;
Akihide Takami, Hiroshima, JP;
Assignee:
Mazda Motor Corporation, Hiroshima, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01J 2/906 ; B01J 2/100 ; B01J 2/300 ; B01J 2/340 ; B01J 2/358 ;
U.S. Cl.
CPC ...
B01J 2/906 ; B01J 2/100 ; B01J 2/300 ; B01J 2/340 ; B01J 2/358 ;
Abstract
An exhaust gas purifying catalyst contains a NOx absorbing component which comprises at least one kind of element selected from a group of alkaline earth metals, a group of alkaline metals and a group of rare earth elements and a component, other than the NOx absorbing component, selected between K and Na. The catalyst has a such a structure that the component other than the NOx absorbing component is brought into contact with an exhaust gas before the NOx absorbing component is brought into contact with the exhaust gas.