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. 03, 2007
Filed:
Aug. 17, 2001
Lothar Mussmann, Offenbach, DE;
Dieter Lindner, Hanau, DE;
Martin Votsmeier, Maintal, DE;
Egbert Lox, Hanau, DE;
Thomas Kreuzer, Karben, DE;
Lothar Mussmann, Offenbach, DE;
Dieter Lindner, Hanau, DE;
Martin Votsmeier, Maintal, DE;
Egbert Lox, Hanau, DE;
Thomas Kreuzer, Karben, DE;
Umicore AG & Co. KG, Hanau-Wolfgang, DE;
Abstract
An oxygen storage material based on cerium oxide with at least one other oxide of the metals silicon and zirconium, wherein the cerium oxide and the other oxides are present in the form of a mixed oxide. The material is obtainable in that hydroxidic precursors of the mixed oxide are first prepared in a manner known per se using a wet-chemical route, these precursors are optionally dried at temperatures between 80 and 300° C. and the dried precursors are then treated under a hydrogen-containing atmosphere at a temperature between 600 and 900° C. for a period of 1 to 10 hours. The reductive thermal treatment endows the material with a greatly improved dynamic behavior as compared with conventional calcination in air.