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:
Mar. 03, 2020
Filed:
Mar. 13, 2014
Mitsui Mining & Smelting Co., Ltd., Tokyo, JP;
Yasunori Imada, Saitama, JP;
Yunosuke Nakahara, Saitama, JP;
Mitsui Mining & Smelting Co., Ltd., Tokyo, JP;
Abstract
Provided is a new catalyst structure for exhaust gas treatment including an upper catalyst layer and a lower catalyst layer, in which the catalyst structure can sufficiently exhibit functions as a three way catalyst while maintaining gas diffusibility. Proposed is a catalyst structure including a substrate, an upper catalyst layer, and a lower catalyst layer, the catalyst structure having a first peak or a second peak at a pore volume diameter of 10 nm to 50 nm and a pore volume diameter of 50 nm to 100 nm, respectively, in the logarithmic differential pore volume distribution analyzed by a mercury intrusion porosimeter.