Invention Application
- Patent Title: HONEYCOMB FILTER
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Application No.: US16815523Application Date: 2020-03-11
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Publication No.: US20200306681A1Publication Date: 2020-10-01
- Inventor: Fumihiko YOSHIOKA
- Applicant: NGK Insulators, Ltd.
- Applicant Address: JP Nagoya-City
- Assignee: NGK Insulators, Ltd.
- Current Assignee: NGK Insulators, Ltd.
- Current Assignee Address: JP Nagoya-City
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@f7a452d
- Main IPC: B01D46/24
- IPC: B01D46/24 ; B01D53/94

Abstract:
A honeycomb filter includes a pillar-shaped honeycomb structure having porous partition walls provided, surrounding a plurality of cells which serve as fluid through channels extending from an inflow end face to an outflow end face, and porous plugging portions provided either at the ends on the inflow end face side or the outflow end face side of the cells, wherein the plugging portions are composed of a porous material, the honeycomb structure has a central region and a circumferential region, and a ratio of an area of the circumferential region with respect to that of the central region ranges from 0.1 to 0.5, porosity of a central plugging portion in the central region, is higher than that of a circumferential plugging portion in the circumferential region, and the porosity of the central plugging portion ranges from 76% to 85%, and that of the circumferential plugging portion from 60% to 75%.
Public/Granted literature
- US10974187B2 Honeycomb filter Public/Granted day:2021-04-13
Information query
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