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:
Sep. 14, 2010
Filed:
Mar. 30, 2009
Masatoshi Maruki, Osaka, JP;
Hiroshi Okamoto, Osaka, JP;
Hiroshi Kodama, Osaka, JP;
Akiko Izumi, Osaka, JP;
Masatoshi Maruki, Osaka, JP;
Hiroshi Okamoto, Osaka, JP;
Hiroshi Kodama, Osaka, JP;
Akiko Izumi, Osaka, JP;
Daiichi Kigenso Kagaku Kogyo Co., Ltd., Osaka-shi, JP;
Abstract
The present invention provides a cerium-zirconium based compound oxide having a total pore volume of at least 0.4 ml/g, the volume of pores having a diameter of 10 nm to 100 nm of 0.25 ml/g or more, and the volume of pores having a diameter of 100 nm to 10 μm of 0.2 ml/g or less. The cerium-zirconium based compound oxide preferably has excellent thermal stability, which allows the desirable pore volume to be maintained even after conducting a further heat treatment at 1,000° C. for 3 hours.