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:
Feb. 15, 2000
Filed:
Nov. 12, 1997
Yoshitsugu Ogura, Toyota, JP;
Takeru Yoshida, Susono, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
A catalyst for purifying an exhaust gas includes a core, and a catalyst ingredient loading layer. The core includes a first support, and an NO.sub.x storage member involved in the first support. The catalyst ingredient loading layer includes a second support and a noble metal catalyst ingredient involved in the second support, and is formed on the core. The catalyst ingredient loading layer keeps SO.sub.x, included in the exhaust gas, from reaching the core. Hence, the NO.sub.x storage member is inhibited from being poisoned by sulfur. The NO.sub.x storage member is separated from the noble metal catalyst ingredient. Therefore, the noble metal catalyst ingredient is inhibited from sintering.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile