Invention Grant
- Patent Title: Honeycomb filter
- Patent Title (中): 蜂窝过滤器
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Application No.: US13417743Application Date: 2012-03-12
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Publication No.: US08343252B2Publication Date: 2013-01-01
- Inventor: Takashi Mizutani , Shingo Iwasaki , Yukio Miyairi
- Applicant: Takashi Mizutani , Shingo Iwasaki , Yukio Miyairi
- Applicant Address: JP Nagoya
- Assignee: NGK Insulators, Ltd.
- Current Assignee: NGK Insulators, Ltd.
- Current Assignee Address: JP Nagoya
- Agency: Burr & Brown
- Priority: JP2011-075754 20110330
- Main IPC: B01D39/00
- IPC: B01D39/00

Abstract:
A honeycomb filter 20 includes a plurality of porous partition portions 22 forming a plurality of cells 23 serving as channels of fluid and trapping layers 24 that are formed on the partition portions and configured to trap a solid component contained in the fluid. In the honeycomb filter 20, a predetermined trapping region present on the partition portions 22 satisfies that, in an inscribed-circle-diameter distribution obtained by dividing an image of the partition portions captured with an electron microscope into a material region and a plurality of pore regions and by drawing maximum inscribed circles individually inscribed in the pore regions, a median pore diameter D50 is 1 μm or more and 6 μm or less and a median pore diameter D80 is 1 μm or more and 7 μm or less, and an inscribed-circle porosity determined from the inscribed-circle-diameter distribution is 35% or more and 60% or less.
Public/Granted literature
- US20120251398A1 HONEYCOMB FILTER Public/Granted day:2012-10-04
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