Patent ID: 8420020

Claim:
A honeycomb filter, comprising: a plurality of porous partition portions each forming a cell that is open at one end and closed at the other end and serves as a flow path of a fluid, at least part of each of the partition portions being loaded with a catalyst; and a trapping layer for trapping and removing solid components contained in the fluid, the trapping layer being disposed on each of the partition portions, wherein the amount of catalyst a within cells and on a surface of an upstream partition portion, which is formed of part of each of the partition portions on the upstream side of the cell, and the amount of catalyst b within cells and on a surface of a downstream partition portion, which is formed of part of each of the partition portions on the downstream side of the cell, satisfy 1.05≦a/b≦3.00, and wherein at least part of the trapping layer is loaded with a catalyst, and the amount of catalyst A in an upstream trapping layer, which is formed of part of the trapping layer in the upstream partition portion, and the amount of catalyst B in a downstream trapping layer, which is formed of part of the trapping layer in the downstream partition portion, satisfy 1.08≦A/B≦5.00.