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. 04, 2007
Filed:
Jul. 12, 2004
Stipan Katusic, Kelkheim, DE;
Stefan Heberer, Gelnhausen, DE;
Michael Kraemer, Schoeneck-Kilianstaedten, DE;
Peter Kress, Karlstein, DE;
Michael Kroell, Kahl, DE;
Edwin Staab, Geiselbach, DE;
Stipan Katusic, Kelkheim, DE;
Stefan Heberer, Gelnhausen, DE;
Michael Kraemer, Schoeneck-Kilianstaedten, DE;
Peter Kress, Karlstein, DE;
Michael Kroell, Kahl, DE;
Edwin Staab, Geiselbach, DE;
Degussa AG, Duesseldorf, DE;
Abstract
Polycrystalline cerium oxide powder in the form of aggregates of primary particles with a specific surface of between 70 and 150 m/g, an average primary particle diameter of between 5 and 20 nm and an average, projected aggregate diameter of between 20 and 100 nm. It is produced in that an aerosol is reacted in a flame obtained from a hydrogen-containing combustible gas and primary air and the solid obtained is then separated from the gaseous substances.