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:
Aug. 26, 2025
Filed:
Mar. 02, 2023
Ngk Insulators, Ltd., Nagoya, JP;
Fumihiko Yoshioka, Novi, MI (US);
Yuji Sasaki, Nagoya, JP;
Yasuyuki Furuta, Konan, JP;
Ritsuko Teranishi, Nagoya, JP;
Ayaka Sakai, Nagoya, JP;
Tatsuya Ohashi, Chiryu, JP;
NGK INSULATORS, LTD., Nagoya, JP;
Abstract
A honeycomb filter comprising a pillar-shaped honeycomb structure body having a porous partition wall and a plugging portion, wherein, in a pore diameter distribution of the partition wall, in the case where the pore diameter (μm) whose cumulative pore volume is 10% of the total pore volume is denoted by D10, the pore diameter (μm) whose cumulative pore volume is 50% of the total pore volume is denoted by D50, and the pore diameter (μm) whose cumulative pore volume is 90% of the total pore volume is denoted by D90, all of the following equations (1) to (6) are satisfied.8.4 μm<10 (1)17.5 μm<50<24.0 μm (2)90<55.2 μm (3)(log90−log10)/log50<0.60 (4)log90/log50<1.30 (5)log50/log10<1.38 (6)