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. 17, 2026
Filed:
Apr. 13, 2023
Eriko Yoshimoto, Toyota, JP;
Nobuyuki Takagi, Toyota, JP;
Takuya Okuda, Hamamatsu, JP;
Yuhei Udagawa, Hamamatsu, JP;
Takahiro Harada, Fujieda, JP;
Eriko Yoshimoto, Toyota, JP;
Nobuyuki Takagi, Toyota, JP;
Takuya Okuda, Hamamatsu, JP;
Yuhei Udagawa, Hamamatsu, JP;
Takahiro Harada, Fujieda, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota, JP;
CATALER CORPORATION, Kakegawa, JP;
Abstract
The present disclosure provides an oxygen storage/release material that has achieved both the improved oxygen storage/release capacity at low temperature and heat tolerance, which comprises a ceria-zirconia-based composite oxide, wherein the ceria-zirconia-based composite oxide further comprises praseodymium (Pr) or neodymium (Nd), and has, in at least a part thereof, at least one ordered phase of κ phase and a pyrochlore phase, a proportion of primary particles having particle diameters of 0.4 μm to 1.5 μm is 40% to 100% on a particle number basis, and, when heated for 5 hours in the air at 1,100° C., I(14/29) value is 0.015 or more and I(28/29) value is 0.08 or less. The present disclosure also relates to a method for producing such oxygen storage/release material.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile