US 11,654,592 B2
Rectangular outlet honeycomb structures, particulate filters, extrusion dies, and method of manufacture thereof
Douglas Munroe Beall, Painted Post, NY (US); Suhao He, Ithaca, NY (US); Achim Karl-Erich Heibel, Corning, NY (US); Kenneth Richard Miller, Addison, NY (US); Pushkar Tandon, Painted Post, NY (US); and David John Thompson, Savona, NY (US)
Assigned to Corning Incorporated, Corning, NY (US)
Filed by CORNING INCORPORATED, Corning, NY (US)
Filed on Sep. 22, 2021, as Appl. No. 17/481,830.
Application 17/481,830 is a continuation of application No. 16/095,596, granted, now 11,148,089, previously published as PCT/US2017/029159, filed on Apr. 24, 2017.
Claims priority of provisional application 62/452,765, filed on Jan. 31, 2017.
Claims priority of provisional application 62/326,384, filed on Apr. 22, 2016.
Prior Publication US 2022/0008858 A1, Jan. 13, 2022
Int. Cl. B01D 46/24 (2006.01); B28B 3/26 (2006.01); F01N 3/022 (2006.01)
CPC B28B 3/269 (2013.01) [B01D 46/247 (2013.01); B01D 46/249 (2021.08); B01D 46/2482 (2021.08); B01D 46/2484 (2021.08); B01D 46/2486 (2021.08); F01N 3/0222 (2013.01); F01N 2330/34 (2013.01); Y02T 10/12 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A particulate filter comprising: a honeycomb structure comprising a matrix of intersecting porous cell walls extending in an axial direction between an inlet end and an outlet end of the honeycomb structure, the matrix defining a plurality of inlet cells and outlet cells, and corresponding inlet channels and outlet channels defined by respective inlet cells and respective outlet cells, wherein at least a portion of the outlet channels are larger in cross-sectional area than any of the inlet channels, and at least some of the outlet channels comprise a rectangular shape in cross-section, wherein either (a) some of the outlet channels have cross-sectional area greater than or equal to twice the cross-sectional area of an inlet channel, or (b) the rectangular shape comprises an outlet length Lo that is more than twice an inlet length Li across an inlet channel in a plane perpendicular to the axial direction;
wherein there are 3 or more times as many inlet channels as outlet channels.