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公开(公告)号：US11633875B2
公开(公告)日：2023-04-25
申请号：US16354759
申请日：2019-03-15
申请人： NGK INSULATORS, LTD.
发明人： Nobuhiro Fujie , Yuji Watanabe , Ken Itadu , Yoshihiro Sato
IPC分类号： B28B11/00 , F01N3/022 , B28B11/18 , B24B27/00 , B24B55/06 , B23C3/00 , B28B11/24 , C04B38/00 , B28B11/12 , B28B11/08 , B23P15/00
摘要： A bottom face processing method of a pillar-shaped honeycomb structure including steps of: preparing a pillar-shaped honeycomb structure including a plurality of first cells which extend in parallel with each other from a first bottom face to a second bottom face, and each of which is opened in the first bottom face and has a protruding plugged portion in the second bottom face, and a plurality of second cells each of which is adjacent to at least one of the first cells with a partition wall interposed therebetween, which extend in parallel with each other from the first bottom face to the second bottom face, and each of which has a protruding plugged portion in the first bottom face, and is opened in the second bottom face; and removing the protruding portion from the plugged portion of each of the first cells and the second cells of the pillar-shaped honeycomb structure.
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公开(公告)号：US11872527B2
公开(公告)日：2024-01-16
申请号：US17166414
申请日：2021-02-03
申请人： NGK Insulators, Ltd.
发明人： Koji Fukuyo , Michio Suzuki , Yasutaka Watanabe , Ken Itadu
CPC分类号： B01D53/885 , B01J35/04 , C04B38/0009 , B01D2255/915 , B01D2255/92
摘要： A honeycomb filter including: a pillar-shaped honeycomb structure having an inflow end face and an outflow end face and including a porous partition wall disposed so as to surround a plurality of cells, the plurality of cells extending from the inflow end face to the outflow end face; inflow side plugging portions disposed at open ends of predetermined cells on the inflow end face side; and outflow side plugging portions disposed at open ends of residual cells on the outflow end face side, wherein the outflow side plugging portions comprise first outflow side plugging portions and second outflow side plugging portions, the plugging length L1 of the first outflow side plugging portions is 10 to 50% of the overall length L0 of the honeycomb structure, and the plugging length L2 of the second outflow side plugging portions is less than 10% of the overall length L0 of the honeycomb structure.
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公开(公告)号：US11260558B2
公开(公告)日：2022-03-01
申请号：US16357809
申请日：2019-03-19
申请人： NGK INSULATORS, LTD.
发明人： Nobuhiro Fujie , Yuji Watanabe , Ken Itadu , Yoshihiro Sato
摘要： A masking method for honeycomb formed body, including bonding a film on at least one bottom face of a honeycomb formed body in a quadrangular prism shape such that an adhesive surface is in contact with the bottom face. The step of bonding the film includes bonding of the film so as to have a bottom face covering portion that covers a whole surface of the bottom face and a pair of outer edge portions along one pair of opposite sides of a quadrangle defining an outer peripheral shape of the bottom face and a pair of protruding portions protruding from another pair of opposite sides of the quadrangle. At least a part of the adhesive surface of each of the pair of protruding portions is bonded so as to be in contact with a pair of opposing lateral faces of the honeycomb formed body.
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公开(公告)号：US11292751B2
公开(公告)日：2022-04-05
申请号：US16774350
申请日：2020-01-28
申请人： NGK INSULATORS, LTD.
发明人： Ken Itadu , Nobuhiro Fujie , Yuji Watanabe
摘要： A method for producing a honeycomb structure, the method including: a step of drying a pillar-shaped honeycomb formed body including partition walls that define a plurality of cells each forming a flow path penetrating from a first end face to a second end face; and after the step of drying, a step of cooling the honeycomb formed body by applying a suction force to the first end face of the honeycomb formed body to allow a coolant to flow in the honeycomb formed body from the second end face, pass through the cells, and flow out from the first end face.
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