Plugged honeycomb structure
US-2018214810-A1 · Aug 2, 2018 · US
Honeycomb filter
US11359528B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11359528-B2 |
| Application number | US-202117147741-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 13, 2021 |
| Priority date | Mar 2, 2020 |
| Publication date | Jun 14, 2022 |
| Grant date | Jun 14, 2022 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
A honeycomb filter includes a pillar-shaped honeycomb structure body having a porous partition wall disposed to surround a plurality of cells and a plugging portion provided at an open end on a first end face side or a second end face side of each of the cells, wherein the partition wall is composed of a material containing cordierite as a main component thereof, a number per unit area of pores which exist at a surface of the partition wall and which have equivalent circle diameters exceeding 3.0 μm is 1400 per mm 2 or more, and, in a pore diameter distribution which indicates a cumulative pore volume of the partition wall, with a log pore diameter on a horizontal axis and a log differential pore volume (cm 3 /g) on a vertical axis, a half-value width of a first peak that includes a maximum value of the log differential pore volume is 0.30 or less.
First claim
Opening claim text (preview).
What is claimed is: 1. A honeycomb filter comprising: a pillar-shaped honeycomb structure body having a porous partition wall disposed to surround a plurality of cells which serve as fluid through channels extending from a first end face to a second end face; and a plugging portion provided at an open end on a side of the first end face or a side of the second end face of each of the plurality of cells, wherein the porous partition wall is composed of a material containing cordierite as a main component thereof, a number per unit area of pores which exist at a surface of the porous partition wall and which have equivalent circle diameters exceeding 3.0 μm is 1400 per mm 2 or more, in a pore diameter distribution which indicates a cumulative pore volume of the porous partition wall, with a log pore diameter on a horizontal axis and a log differential pore volume (cm 3 /g) on a vertical axis, a half-value width of a first peak that includes a maximum value of the log differential pore volume is 0.30 or less, a porosity of the porous partition wall is 55 to 63%, and an average pore diameter of the porous partition wall is 5 to 15 μm. 2. The honeycomb filter according to claim 1 , wherein a thickness of the porous partition wall is 152 to 254 μm.
Assignees
Inventors
Classifications
characterized by the geometrical structure, shape, pattern or configuration or parameters related to the geometry of the structure · CPC title
Honeycomb filters (used for filtering exhaust gases of an internal combustion engine F01N3/022; ceramic honeycomb structures per se C04B38/0006) · CPC title
Honeycomb-like · CPC title
Ceramic multi-channel monoliths, e.g. honeycombs · CPC title
as filters or diaphragms · CPC title
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- What does patent US11359528B2 cover?
- A honeycomb filter includes a pillar-shaped honeycomb structure body having a porous partition wall disposed to surround a plurality of cells and a plugging portion provided at an open end on a first end face side or a second end face side of each of the cells, wherein the partition wall is composed of a material containing cordierite as a main component thereof, a number per unit area of pores…
- Who is the assignee on this patent?
- Ngk Insulators Ltd
- What technology area does this patent fall under?
- Primary CPC classification B01D46/2429. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Jun 14 2022 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).