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:
Nov. 01, 2011
Filed:
Sep. 21, 2010
Applicants:
Hiroshi Okamoto, Osaka, JP;
Masatoshi Maruki, Osaka, JP;
Inventors:
Hiroshi Okamoto, Osaka, JP;
Masatoshi Maruki, Osaka, JP;
Assignee:
Daiichi Kigenso Kagaku Kogyo Co., Ltd., Osaka-shi, Osaka-fu, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C01F 17/00 (2006.01); C01G 25/02 (2006.01); B01J 23/10 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention provides a cerium oxide-zirconium oxide-based mixed oxide having superior platinum dispersibility and a suitable OSC, and a simple production process thereof. The cerium oxide-zirconium oxide-based mixed oxide comprises cerium oxide and zirconium oxide, wherein (1) the weight ratio of CeO:ZrOis 60:40 to 90:10, and (2) the cerium oxide and the zirconium oxide are present as a mixture, the zirconium oxide being composed of a solid solution in which tetragonal or cubic zirconium oxide contains cerium.