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:
Dec. 22, 2015
Filed:
May. 07, 2007
Emmanuel Rohart, Sainte Soulle, FR;
Claire Pitois, Sunbyberg, SE;
Kazuhiko Yokota, Kobe, JP;
Virginie Belliere-baca, Andresy, FR;
Virginie Harle, Senlis, FR;
Emmanuel Rohart, Sainte Soulle, FR;
Claire Pitois, Sunbyberg, SE;
Kazuhiko Yokota, Kobe, JP;
Virginie Belliere-Baca, Andresy, FR;
Virginie Harle, Senlis, FR;
RHODIA OPERATIONS, Paris, FR;
Abstract
Thermally stable, solid alumina-based compositions useful for the trapping of nitrogen oxides that are contained in gaseous fluids, notably in vehicular exhaust gases, are formed of alumina, cerium and a divalent metal M selected from among barium, strontium or an association of these two elements and which include at least 10% of the weight of element M expressed by weight of oxide in contrast to the total weight of the composition and also wherein the aluminate compound of the metal element M, i.e., MAlO, is absent and not detectable by X-ray diffraction of the composition, after calcination thereof with air at 700° C. for two hours.