US 11,668,214 B2
Porous ceramic composition, filter, and articles
Roychelle Sheneen Ingram-Ogunwumi, Painted Post, NY (US); Christopher Lane Kerr, Tioga, PA (US); Dell Joseph St Julien, Watkins Glen, NY (US); Lutz Franz Thomas Kercher, Corning, NY (US); and Douglas Richard Wing, Corning, NY (US)
Assigned to Corning Incorporated, Corning, NY (US)
Appl. No. 16/60,724
Filed by Corning Incorporated, Corning, NY (US)
PCT Filed Dec. 7, 2016, PCT No. PCT/US2016/065422
§ 371(c)(1), (2) Date Jun. 8, 2018,
PCT Pub. No. WO2017/100345, PCT Pub. Date Jun. 15, 2017.
Claims priority of provisional application 62/265,219, filed on Dec. 9, 2015.
Prior Publication US 2018/0361299 A1, Dec. 20, 2018
Int. Cl. F01N 3/022 (2006.01); B01D 46/24 (2006.01); C04B 38/00 (2006.01); C04B 111/00 (2006.01)
CPC F01N 3/0222 (2013.01) [B01D 46/2429 (2013.01); B01D 46/2474 (2013.01); B01D 46/2482 (2021.08); B01D 46/24491 (2021.08); B01D 46/24492 (2021.08); B01D 46/24494 (2021.08); C04B 38/0006 (2013.01); C04B 2111/00793 (2013.01); F01N 2330/06 (2013.01)] 27 Claims
OG exemplary drawing
 
1. A particulate filter comprised of at least one porous ceramic wall, the wall comprising a microstructure comprising:
average bulk porosity >62% as measured by mercury porosimetry,
d10>10 μm,
d50>16 μm,
df<0.40,
d90<37 μm, and
surface porosity at the surface of the wall as measured by x-ray tomography is within 10% of an average mid-web porosity of the middle 30% of the wall, and wherein a minimum porosity measured at any point from the surface of the wall and perpendicularly into the wall to within 15 μm of the surface of the wall is at least 90% of the average porosity of the middle 30%.