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:
May. 19, 2020
Filed:
Jul. 20, 2017
Umicore Shokubai Japan Co., Ltd., Tokoname-shi, Aichi, JP;
Kazuyoshi Komata, Himeji, JP;
Hirotaka Kuno, Himeji, JP;
Yuzo Hamada, Himeji, JP;
Masashi Nakashima, Himeji, JP;
Yuji Ogino, Himeji, JP;
Masanori Ikeda, Himeji, JP;
UMICORE SHOKUBAI JAPAN CO., LTD., Tokoname-Shi, Aichi, JP;
Abstract
The present invention provides exhaust gas purification catalyst for an internal combustion engine, and exhaust gas purification method using the catalyst. The present invention provides the exhaust gas purification catalyst including a support, a first catalyst layer on an upstream side, a second catalyst layer on a downstream side, and a third catalyst layer. In the exhaust gas purification catalyst, the upstream portion of the third catalyst layer is present on the first catalyst layer, the downstream portion of the third catalyst layer is present on the second catalyst layer, and in the middle portion between the upstream portion and the downstream portion of the third catalyst layer is present between the first catalyst layer and the second catalyst layer.