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. 25, 2014
Filed:
Mar. 05, 2009
Takashi Mizutani, Tokoname, JP;
Takashi Mizutani, Tokoname, JP;
NGK Insulators, Ltd., Nagoya, JP;
Abstract
A catalyst-carrying filter includes a gas-inflow-side layer and a gas-outflow-side layer, the gas-inflow-side layer including a PM collection layer that has a small average pore size and a PM removal catalyst layer that supports or is coated with an oxidizing catalyst, and the gas-outflow-side layer including a gas purification catalyst layer that supports or is coated with a gas purification catalyst. An amount of oxidizing catalyst supported on the PM collection and PM removal catalyst layer is larger than that of the gas purification catalyst layer by a factor of 1.05 to 10 and an amount of noble metal contained in the PM collection and PM removal catalyst layer is smaller than an amount of noble metal contained in the gas purification catalyst layer.