Ngk Insulators, Inc.

Ritsuko Teranishi

Yuji Sasaki

Yasuyuki Furuta

Fumihiko Yoshioka

Ayaka Sakai

Tatsuya Ohashi

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)

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Nagoya, Japan

Ritsuko Teranishi