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:
Oct. 08, 2013
Filed:
Jun. 26, 2009
Akemi Satou, Toyota, JP;
Masahiko Takeuchi, Toyota, JP;
Keizo Hiraku, Miyoshi, JP;
Yusuke Kawamura, Susono, JP;
Takahiro Fujiwara, Susono, JP;
Tadashi Suzuki, Seto, JP;
Naoki Takahashi, Nagoya, JP;
Akemi Satou, Toyota, JP;
Masahiko Takeuchi, Toyota, JP;
Keizo Hiraku, Miyoshi, JP;
Yusuke Kawamura, Susono, JP;
Takahiro Fujiwara, Susono, JP;
Tadashi Suzuki, Seto, JP;
Naoki Takahashi, Nagoya, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;
Abstract
An exhaust gas purification catalyst includes: a lower catalyst layer that contains a ceria-zirconia mixed oxide having 50 to 70 mass % of CeOand 5 mass % or more of PrOand carries at least one of Pt and Pd; and an upper catalyst layer that contains at least zirconia and carries at least Rh, wherein the total amount of CeOper liter of the carrier base is 15 to 30 g. Because the amount of CeOis small, formation of HS is suppressed and a high capability of adsorbing and releasing oxygen is brought out in spite of the small amount of CeO.