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. 16, 2024
Filed:
Feb. 03, 2021
Ngk Insulators, Ltd., Nagoya, JP;
Koji Fukuyo, Nagoya, JP;
Michio Suzuki, Nagoya, JP;
Yasutaka Watanabe, Kasugai, JP;
Ken Itadu, Nagoya, JP;
NGK INSULATORS, LTD., Nagoya, JP;
Abstract
A honeycomb filter including: a pillar-shaped honeycomb structure having an inflow end face and an outflow end face and including a porous partition wall disposed so as to surround a plurality of cells, the plurality of cells extending from the inflow end face to the outflow end face; inflow side plugging portions disposed at open ends of predetermined cells on the inflow end face side; and outflow side plugging portions disposed at open ends of residual cells on the outflow end face side, wherein the outflow side plugging portions comprise first outflow side plugging portions and second outflow side plugging portions, the plugging length Lof the first outflow side plugging portions is 10 to 50% of the overall length Lof the honeycomb structure, and the plugging length Lof the second outflow side plugging portions is less than 10% of the overall length Lof the honeycomb structure.