Invention Grant
- Patent Title: Exhaust gas purifying filter with reinforced peripheral area and method for manufacturing the same
- Patent Title (中): 具有增强周边区域的废气净化过滤器及其制造方法
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Application No.: US10681133Application Date: 2003-10-09
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Publication No.: US07101601B2Publication Date: 2006-09-05
- Inventor: Mikio Ishihara , Mamoru Nishimura
- Applicant: Mikio Ishihara , Mamoru Nishimura
- Applicant Address: JP
- Assignee: Denso Corporation
- Current Assignee: Denso Corporation
- Current Assignee Address: JP
- Agency: Nixon & Vanderhye PC
- Priority: JP2002-300828 20021015; JP2003-315831 20030908
- Main IPC: B32B3/12
- IPC: B32B3/12 ; B01D50/00

Abstract:
An exhaust gas purifying filter having a high strength and an excellent efficiency of exhaust gas purification and a method for manufacturing the same are provided. An exhaust gas purifying filter 1 comprises a ceramic honeycomb structure 2 having a surrounding wall 21, partition walls 22 provided in a honeycomb pattern within the surrounding wall 21, and a plurality of cells 23 partitioned by the partition walls 22 and penetrating through end faces 241, 242. If a virtual line 3 is drawn on the end faces 241, 242 of the structure 2 by continuously connecting points at a distance of 1.0 to 3.0 times the cell pitch in the direction toward the center from an inner surface 211 of the surrounding wall 21, not less than 90% of a peripheral area 25 outside the virtual line 3 is blocked with plug material 4.
Public/Granted literature
- US20040071932A1 Exhaust gas purifying filter with reinforced peripheral area and method for manufacturing the same Public/Granted day:2004-04-15
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