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:
Apr. 22, 2008
Filed:
Feb. 09, 2007
Shigeru Aozasa, Anan, JP;
Emmanuel Rohart, Sainte Soulle, FR;
Lianxin Dai, Osaka, JP;
Bernard Pacaud, Nishinomiya, JP;
Shigeru Aozasa, Anan, JP;
Emmanuel Rohart, Sainte Soulle, FR;
Lianxin Dai, Osaka, JP;
Bernard Pacaud, Nishinomiya, JP;
Anan Kasei Co., Ltd., Hyogo, JP;
Abstract
The present invention relates to ceric oxide that has excellent heat resistance and oxygen absorbing and desorbing capability useful as a co-catalyst material suitable for a catalyst for purifying exhaust gas, that is capable of maintaining a large specific surface area even in use in a high temperature environment, and that is suitable for use in a high temperature environment, yet capable of exhibiting high oxygen absorbing and desorbing capability also in a lower temperature range, a method for preparing such ceric oxide, and a catalyst for purifying exhaust gas utilizing such ceric oxide. The ceric oxide is an oxide composed essentially of ceric oxide, and has a specific surface area of not smaller than 30.0 m/g after calcination at 900° C. for 5 hours.