Invention Grant
- Patent Title: Honeycomb filter, and manufacturing method of the same
- Patent Title (中): 蜂窝式过滤器及其制造方法相同
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Application No.: US13764009Application Date: 2013-02-11
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Publication No.: US08747511B2Publication Date: 2014-06-10
- Inventor: Koji Motoki , Hiroyuki Suenobu , Eriko Kodama
- Applicant: NGK Insulators, Ltd.
- Applicant Address: JP Nagoya
- Assignee: NGK Insulators, Ltd.
- Current Assignee: NGK Insulators, Ltd.
- Current Assignee Address: JP Nagoya
- Agency: Burr & Brown, PLLC
- Priority: JP2011-214741 20110929
- Main IPC: B01D39/00
- IPC: B01D39/00 ; B01D39/06 ; B01D24/00 ; B01D39/14 ; B01D50/00

Abstract:
A honeycomb filter includes a tubular honeycomb structure having porous partition walls with which there are formed a plurality of cells extending from one end surface to the other end surface to become through channels of a fluid; and plugged portions arranged in one open end portion of each of predetermined cells and the other open end portion of each of the remaining cells, porosities of the partition walls are 46% or less, a pore volume ratio of pores having pore diameters of 40 μm or more is 7.5% or less, and a pore volume ratio of pores having pore diameters of 10 μm or less is 25% or less, a permeability of the honeycomb structure is 0.8 μm2 or more, and a coefficient of thermal expansion of the honeycomb structure in a range of 40 to 800° C. is 1.0×10−6/° C. or less.
Public/Granted literature
- US20130145735A1 HONEYCOMB FILTER, AND MANUFACTURING METHOD OF THE SAME Public/Granted day:2013-06-13
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