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:
Apr. 17, 2007
Filed:
Jul. 03, 2003
Hirohisa Tanaka, Shiga, JP;
Isao Tan, Shiga, JP;
Mari Uenishi, Shiga, JP;
Nobuhiko Kajita, Shiga, JP;
Masashi Taniguchi, Shiga, JP;
Yasunori Sato, Shizuoka, JP;
Keiichi Narita, Shizuoka, JP;
Noboru Sato, Shizuoka, JP;
Hirohisa Tanaka, Shiga, JP;
Isao Tan, Shiga, JP;
Mari Uenishi, Shiga, JP;
Nobuhiko Kajita, Shiga, JP;
Masashi Taniguchi, Shiga, JP;
Yasunori Sato, Shizuoka, JP;
Keiichi Narita, Shizuoka, JP;
Noboru Sato, Shizuoka, JP;
Daihatsu Motor Co., Ltd., Osaka, JP;
Cataler Corporation, Shizuoka, JP;
Abstract
To provide an exhaust gas purifying catalyst which can maintain the catalytic activity at a high level over a long time and can achieve satisfactory emission control performance, an exhaust gas purifying catalyst is prepared so as to contain a noble metal, a perovskite-type composite oxide represented by the following general formula (3), and theta-alumina and/or alpha-alumina:ABNO  (3)wherein A represents at least one element selected from rare-earth elements and alkaline earth metals; B represents at least one element selected from Al and transition elements excluding rare-earth elements and noble metals; N represents a noble metal; and m represents an atomic ratio of N satisfying the following relation: 0<m<0.5.