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:
May. 04, 2021
Filed:
Mar. 11, 2020
Applicant:
Ngk Insulators, Ltd., Nagoya, JP;
Inventors:
Kimiko Kishine, Nagoya, JP;
Fumihiko Yoshioka, Nagoya, JP;
Assignee:
NGK Insulators, Ltd., Nagoya, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 46/24 (2006.01);
U.S. Cl.
CPC ...
B01D 46/244 (2013.01); B01D 46/247 (2013.01); B01D 46/2429 (2013.01); B01D 46/2459 (2013.01); B01D 2046/2433 (2013.01); B01D 2046/2481 (2013.01); B01D 2279/30 (2013.01);
Abstract
A honeycomb filter includes a pillar-shaped honeycomb structure having porous partition walls placed, surrounding a plurality of cells which serve as fluid through channels extending from an inflow end face to an outflow end face; and porous plugging portions provided either at the ends on the inflow end face side of the cells or at the ends on the outflow end face side of the cells, wherein the plugging portions include plugging portions that have voids therein, and in the plugging portions having the voids, porosity including the voids as pores ranges from 68% to 83%.