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. 21, 2000
Filed:
Jan. 16, 1998
Masahiko Ogai, Toyota, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
In an exhaust gas purifying catalyst, a catalyst supporting layer is formed on a surface of a cell wall of a honeycomb base member, and a catalytic noble metal and a NOx adsorbing material are loaded on the catalyst supporting layer. The portion of the catalyst supporting layer present within a depth of 100 .mu.m constitutes at least 80% by volume relative to a total volume of the catalyst supporting layer. The catalyst maintains a high probability of contact of emissions with the NOx adsorber and the catalytic noble metal, and allows easy decomposition of the sulfuric acid salt produced by sulfur poising of the NOx adsorber, thereby ensuring reliable recovery of the NOx purifying performance.