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:
Jul. 12, 2016
Filed:
Apr. 26, 2013
Masahide Miura, Toyota, JP;
Atsushi Tanaka, Toyota, JP;
Takahiro Suzuki, Toyota, JP;
Tadashi Suzuki, Seto, JP;
Toshitaka Tanabe, Nagakute, JP;
Naoki Takahashi, Nagoya, JP;
Masahide Miura, Toyota, JP;
Atsushi Tanaka, Toyota, JP;
Takahiro Suzuki, Toyota, JP;
Tadashi Suzuki, Seto, JP;
Toshitaka Tanabe, Nagakute, JP;
Naoki Takahashi, Nagoya, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota-shi, Aichi, JP;
Abstract
A composite oxide with a high oxygen storage capacity is provided without using cerium. The composite oxide is an iron oxide-zirconia composite oxide containing iron, zirconium, and a rare-earth element. The total content of FeO, ZrO, and an oxide of the rare-earth element is not less than 90 mass %, the content of an iron oxide in terms of FeOis 10 to 90 mass %, and the absolute value of the covariance COV(Fe, Zr+X) of the composite oxide, which has been baked in the atmosphere at a temperature of greater than or equal to 900° C. for 5 hours or more, is not greater than 20.