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:
Aug. 02, 2011
Filed:
Jul. 07, 2008
Masakazu Murata, Nagoya, JP;
Yoshiyasu Andoh, Kakamigahara, JP;
Shingo Nakata, Kariya, JP;
Tomoaki Nakano, Toyota, JP;
Akimasa Hirai, Kakegawa, JP;
Kenichi Taki, Kakegawa, JP;
Yuji Yabuzaki, Kakegawa, JP;
Masakazu Murata, Nagoya, JP;
Yoshiyasu Andoh, Kakamigahara, JP;
Shingo Nakata, Kariya, JP;
Tomoaki Nakano, Toyota, JP;
Akimasa Hirai, Kakegawa, JP;
Kenichi Taki, Kakegawa, JP;
Yuji Yabuzaki, Kakegawa, JP;
Denso Corporation, Kariya, JP;
Cataler Corporation, Kakegawa-shi, JP;
Abstract
A hexagonal-cell honeycomb catalyzer is for purifying an exhaust gas. The catalyzer comprising a support that has a plurality of cells and a purification layer that has an HC absorption layer and a three-way catalyst layer. The HC absorption layer is formed on the honeycomb-formed surface of each wall of the support. The three-way catalyst layer is formed on the surface of the HC absorption layer. Provided that the HC absorption layer has a thickness aand the three-way catalyst layer has a thickness bat a thin portion of the purification layer of which thickness is minimum and the HC absorption layer has a thickness aand the three-way catalyst layer has a thickness bat a thick portion of the purification layer of which thickness is maximum, a ratio of a/band a ratio of a/bare both within a range of 1/20 to 5/1.