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:
Feb. 10, 2026
Filed:
Dec. 14, 2020
Applicant:
Ngk Insulators, Ltd., Nagoya, JP;
Inventor:
Koichi Sendo, Nagoya, JP;
Assignee:
NGK INSULATORS, LTD., Nagoya, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D 46/24 (2006.01); B01D 39/20 (2006.01); B01D 46/00 (2022.01); B01J 21/14 (2006.01); F01N 3/28 (2006.01);
U.S. Cl.
CPC ...
B01D 46/2429 (2013.01); B01D 39/2079 (2013.01); B01D 46/0001 (2013.01); B01D 46/24491 (2021.08); B01D 46/2482 (2021.08); B01D 46/2498 (2021.08); B01D 46/2476 (2021.08); B01D 2239/10 (2013.01); B01D 2239/1208 (2013.01); B01D 2239/1241 (2013.01); B01D 2239/1291 (2013.01); B01D 2279/30 (2013.01); B01J 21/14 (2013.01); F01N 3/2825 (2013.01); F01N 2330/02 (2013.01); F01N 2330/06 (2013.01); F01N 2330/30 (2013.01); F01N 2370/02 (2013.01);
Abstract
A pillar-shaped honeycomb structure filter including a plurality of first cells and a plurality of second cells, the first cells and the second cells being alternately arranged adjacent to each other with a porous partition wall interposed therebetween, wherein a ceramic porous film, in which an average film thickness T (unit: μm) is 2 to 50 μm, a porosity P (unit: %) is 65 to 90%, and the average film thickness T and the porosity P satisfy a relational expression of 0.36 T+60≤P≤0.75 T+72, is formed on a surface of each of the first cells.