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1. 发明授权

US11103862B2 Honeycomb filter 有权
公开(公告)号：US11103862B2
公开(公告)日：2021-08-31
申请号：US16815549
申请日：2020-03-11
申请人： NGK Insulators, Ltd.
发明人： Fumihiko Yoshioka
IPC分类号： B01D46/24 , B01J35/04 , C04B38/00 , B01D53/88
摘要： 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 or the outflow end face 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, and a plugging length L1 in the cell extending direction of a central plugging portion in the central region is smaller than a plugging length L2 of a circumferential plugging portion in the circumferential region, L1 ranges from 3 to 6 mm, and L2 from 7 to 9 mm.

2. 发明授权

US10974187B2 Honeycomb filter 有权
公开(公告)号：US10974187B2
公开(公告)日：2021-04-13
申请号：US16815523
申请日：2020-03-11
申请人： NGK Insulators, Ltd.
发明人： Fumihiko Yoshioka
IPC分类号： B01D46/24 , B01D53/94
摘要： 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%.

3. 发明授权

US10525394B2 Honeycomb filter 有权
公开(公告)号：US10525394B2
公开(公告)日：2020-01-07
申请号：US15455428
申请日：2017-03-10
申请人： NGK INSULATORS, LTD.
发明人： Fumihiko Yoshioka , Kazuto Miura
IPC分类号： B01D46/24 , B01D46/00
摘要： A honeycomb filter includes a pillar-shaped honeycomb substrate including a porous partition wall that defines a plurality of cells extending from an inflow end face to an outflow end face, an inflow side plugging portion disposed at the inflow end face of the honeycomb substrate to plug open ends of outflow cells and an outflow side plugging portion disposed at the outflow end face of the honeycomb substrate to plug open ends of inflow cells other than the outflow cells. The honeycomb substrate includes the partition wall that defines two of the inflow cells by division. An average of the plugging length LIN of the inflow side plugging portions disposed in the outflow cells of the honeycomb substrate is larger than an average of the plugging length LOUT of the outflow side plugging portions disposed in the inflow cells of the honeycomb substrate.

4. 发明授权

US10478766B2 Honeycomb filter 有权
公开(公告)号：US10478766B2
公开(公告)日：2019-11-19
申请号：US15455330
申请日：2017-03-10
申请人： NGK INSULATORS, LTD.
发明人： Fumihiko Yoshioka , Kazuto Miura
IPC分类号： B01D46/24
摘要： A honeycomb filter includes a pillar-shaped honeycomb substrate including a porous partition wall that defines a plurality of cells extending from an inflow end face to an outflow end face, an inflow side plugging portion disposed at the inflow end face of the honeycomb substrate to plug open ends of outflow cells; and an outflow side plugging portion disposed at the outflow end face of the honeycomb substrate to plug open ends of inflow cells other than the outflow cells. The honeycomb substrate includes the partition wall that defines two of the inflow cells by division. An average of the plugging length LOUT of the outflow side plugging portions disposed in the inflow cells of the honeycomb substrate is larger than an average of the plugging length LIN of the inflow side plugging portions disposed in the outflow cells of the honeycomb substrate.

5. 发明授权

US11565209B2 Honeycomb filter 有权
公开(公告)号：US11565209B2
公开(公告)日：2023-01-31
申请号：US17457332
申请日：2021-12-02
申请人： NGK Insulators, Ltd.
发明人： Fumihiko Yoshioka , Yudai Kurimoto
IPC分类号： B01D46/00 , B01D46/24
摘要： A honeycomb filter includes a honeycomb structure body having a porous partition wall disposed to surround a plurality of cells and a plugging portion disposed at one end of the cells, wherein the plurality of cells are arranged in a square grid pattern along a first direction and a second direction in a section orthogonal to an extending direction of the cells, the shape in the section is a deformed square having a specific corner, the specific corner includes a first curved portion, a second curved portion, and a connecting portion, a radius of curvature R1 of the first curved portion and a radius of curvature R2 of the second curved portion are 40 to 80 μm, respectively, and a center distance between a center of curvature O1 of the first curved portion and a center of curvature O2 of the second curved portion is 80 to 200 μm.

6. 发明授权

US11293317B2 Honeycomb filter 有权
公开(公告)号：US11293317B2
公开(公告)日：2022-04-05
申请号：US17151282
申请日：2021-01-18
申请人： NGK Insulators, Ltd.
发明人： Fumihiko Yoshioka , Nozomu Hirai , Kyohei Kato
IPC分类号： F01N3/022 , B01J35/04 , B01J35/10
摘要： 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, wherein the partition wall is composed of a material containing cordierite as a main component thereof, porosity of the partition wall measured by a mercury press-in method is 55 to 65%, an average pore diameter of the partition wall measured by a mercury press-in method is 5 to 10 μm, and in a pore diameter distribution indicating a cumulative pore volume of the partition wall measured by a mercury press-in method, with a pore diameter (μm) on an abscissa axis and a log differential pore volume (cm3/g) on an ordinate axis, a first peak including a maximum value of the log differential pore volume has a pore diameter value of 8 μm or less, the pore diameter value corresponding to a ⅓ value width of the maximum value.

7. 发明授权

US11280236B2 Honeycomb filter 有权
公开(公告)号：US11280236B2
公开(公告)日：2022-03-22
申请号：US16356204
申请日：2019-03-18
申请人： NGK Insulators, Ltd. , Honda Motor Co., Ltd.
发明人： Fumihiko Yoshioka , Yoshiaki Hatakeyama , Noritaka Masumitsu
IPC分类号： F01N3/022 , B01J23/42 , B01J35/04 , B29C48/11
摘要： A honeycomb filter, including: a honeycomb structure, wherein the honeycomb structure includes a platinum group element-containing catalyst layer, the platinum group element-containing catalyst layer is disposed only on a side of an inner surface of the partition walls surrounding the inflow cells, and the platinum group element-containing catalyst layer is disposed in a range of at least up to 40% with respect to an overall length of the cells starting from the outflow end face and is not disposed in a range of at least up to 30% with respect to the overall length of the cells starting from the inflow end face, in an extending direction of the cells of the honeycomb structure.

8. 发明申请

US20200306740A1 HONEYCOMB FILTER 审中-公开
公开(公告)号：US20200306740A1
公开(公告)日：2020-10-01
申请号：US16815574
申请日：2020-03-11
申请人： NGK Insulators, Ltd.
发明人： Fumihiko Yoshioka
IPC分类号： B01J35/04 , C04B38/00 , B01D53/88
摘要： 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 or the outflow end face 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, a plugging length L1 in the cell extending direction of a central plugging portion in the central region is larger than a plugging length L2 of a circumferential plugging portion in the circumferential region, L1 ranges from 7 to 9 mm, and L2 from 3 to 6 mm.

9. 发明授权

US11759741B2 Honeycomb filter 有权
公开(公告)号：US11759741B2
公开(公告)日：2023-09-19
申请号：US17151278
申请日：2021-01-18
申请人： NGK Insulators, Ltd.
发明人： Fumihiko Yoshioka , Yuji Sasaki , Kimiko Kishine , Sachiko Ishida , Kyohei Kato
IPC分类号： B01J21/04 , B01J35/04 , B01J35/10 , B01D53/94 , B01D46/24 , B01D39/20 , F01N3/022 , F01N3/28
CPC分类号： B01D46/2429 , B01D39/2068 , B01D46/2476 , B01D46/24491 , B01D46/24492 , B01D53/9413 , B01J21/04 , B01J35/04 , B01J35/1076 , F01N3/022 , F01N3/2803 , B01D2255/2092 , B01D2255/9155 , B01D2279/30 , F01N2330/02 , F01N2330/30 , F01N2370/02
摘要： 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, wherein the partition wall is composed of a material containing cordierite as a main component thereof, porosity of the partition wall measured by a mercury press-in method is 60 to 68%, an average pore diameter of the partition wall measured by a mercury press-in method is 13 to 18 μm, and in a pore diameter distribution indicating a cumulative pore volume of the partition wall measured by a mercury press-in method, with a pore diameter (μm) on an abscissa axis and a log differential pore volume (cm3/g) on an ordinate axis, a first peak including a maximum value of the log differential pore volume has a pore diameter value of 15 μm or less, the pore diameter value corresponding to a ⅓ value width of the maximum value.

10. 发明授权

US10669906B2 Honeycomb filter 审中-公开
公开(公告)号：US10669906B2
公开(公告)日：2020-06-02
申请号：US16356268
申请日：2019-03-18
申请人： NGK Insulators, Ltd. , Honda Motor Co., Ltd.
发明人： Fumihiko Yoshioka , Yoshiaki Hatakeyama , Noritaka Masumitsu
IPC分类号： B01J23/10 , B01J23/42 , B01J35/04 , B01J21/04 , B01J21/06 , F01N3/022 , B29C48/11
摘要： A honeycomb filter, including: a honeycomb structure, wherein the honeycomb structure further includes a platinum group element-containing catalyst layer, the platinum group element-containing catalyst layer is disposed only on a side of an inner surface of the partition walls surrounding the inflow cells, and the platinum group element-containing catalyst layer is disposed in a range of at least up to 35% with respect to an overall length of the cells starting from the inflow end face and is not disposed in a range of at least up to 30% with respect to the overall length of the cells starting from the outflow end face, in an extending direction of the cells of the honeycomb structure.

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