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:
Jan. 31, 2012
Filed:
Nov. 29, 2006
Sébastien Bardon, Cambridge, MA (US);
Vincent Gleize, Avignon, FR;
Patrick Girot, Salon de Provence, FR;
Sébastien Bardon, Cambridge, MA (US);
Vincent Gleize, Avignon, FR;
Patrick Girot, Salon de Provence, FR;
Saint-Gobain Centre de Recherches et d'Etudes Europeen, Courbevoie, FR;
Abstract
The present invention relates to a structure, for filtering particulate-laden gases, of the honeycomb type and containing an assembly of adjacent ducts or channels, whose axes are parallel to one another, separated by porous walls, the ducts being sealed off by plugs at one or other of their ends so as to form inlet chambers opening onto a gas entry face and outlet chambers opening onto a gas exit face, in such a way that the gas to be filtered passes through the porous walls, wherein said walls comprise material based on silicon carbide and the walls have an open porosity of between 30 and 53%; a median pore diameter of between 9 and 20 μm; the average number of open pores on the surface of the walls, the opening area of which is between 20 and 310 μm, is greater than 300 per mmof wall; and the ratio of the total opening area of said open pores to said area of the walls is between 0.15 and 0.30.