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:
Dec. 23, 2025
Filed:
Jun. 13, 2023
Ngk Insulators, Ltd., Nagoya, JP;
Tadato Ito, Komaki, JP;
Sho Inotsume, Miyoshi, JP;
NGK INSULATORS, LTD., Nagoya, JP;
Abstract
A honeycomb filter comprising a pillar-shaped honeycomb structure having a porous partition wall disposed so as to surround a plurality of cells which serve as a fluid through channel extending from an inflow end face to an outflow end face and a porous plugging portion provided at either an end on the inflow end face side or an end on the outflow end face side of the cell, wherein in a processed image obtained by binarizing an electron microscope image of a visual field area of 480 μm×640 μm of the plugging portion, the plugging portion is composed of a plurality of particles, and the number of the particles having an area of 0.25 μmor more is 1000 or more and 3500 or less.