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:
Nov. 18, 2003
Filed:
Aug. 11, 2000
Yoriko Hasegawa, Aichi-ken, JP;
Mareo Kimura, Aichi-ken, JP;
Naoki Takahashi, Aichi-ken, JP;
Hiromasa Suzuki, Kasugai, JP;
Riemi Tanizawa, Toyota, JP;
Kazuaki Sobue, Toyota, JP;
Other;
Abstract
A catalyst for purifying an exhaust gas includes a support including rutile titania, an NO storage material including at least on element selected from alkali metals, alkaline-earth metals and rare-earth elements and loaded on the support, and a noble metal loaded on the support. Since the rutile TiO and the NO storage material form a fine composite oxide, the NO storage material is likely to decompose even when it is subject to the sulfur poisoning, and the NO storage material easily recovers the NO storage ability. Therefore, the NO storage material can be inhibited from the sulfur poisoning, and a high NO conversion ratio can be maintained even after the service at an elevated temperature.