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. 06, 2011
Filed:
Oct. 10, 2007
Applicants:
Yuki Kaneshiro, Okayama, JP;
Akira Nagatomi, Honjo, JP;
Inventors:
Yuki Kaneshiro, Okayama, JP;
Akira Nagatomi, Honjo, JP;
Assignee:
Dowa Electronics Materials Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01J 23/00 (2006.01); B01J 23/10 (2006.01);
U.S. Cl.
CPC ...
Abstract
A composite oxide for exhaust gas purification catalysts, which comprises Ce, Bi, R and oxygen and satisfies 0<x≦0.4 and 0<y<1.0 when the molar ratio of Ce, Bi and R of the oxide is represented as (1−x−y), x and Y respectively. The composite oxide has an X-ray diffraction peak corresponding to that of a fluorite structure. In the composite oxide, R contains one or two of Pr and Tb. The exhaust gas purification catalyst is favorable for a PM combustion catalyst.