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1.发明授权公开(公告)号：US10173158B2
公开(公告)日：2019-01-08
申请号：US15167820
申请日：2016-05-27
Inventor： Koji Motomura , Hiroto Sumida , Takahiro Kurokawa , Taichi Nakamura , Takayoshi Yamaguchi , Takatoshi Mitsushima
IPC: B01D39/16 , B32B5/02 , B32B7/12 , B32B5/08 , B32B5/26 , B32B7/02 , B32B7/14 , B32B37/00 , B32B37/24 , B32B37/12
Abstract: A laminated nonwoven fabric includes a first nonwoven fabric and a second nonwoven fabric. The first nonwoven fabric contains charged first fibers. The second nonwoven fabric contains second fibers, and is laminated on the first nonwoven fabric. A fiber diameter of the first fibers is larger than a fiber diameter of the second fibers.
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公开(公告)号：US10220340B2
公开(公告)日：2019-03-05
申请号：US14870606
申请日：2015-09-30
Inventor： Koji Motomura , Takahiko Murata , Hiroto Sumida , Takahiro Kurokawa , Takatoshi Mitsushima
IPC: B01D53/22 , B01D39/18 , B32B5/02 , B32B5/24 , B32B5/26 , B32B5/08 , B32B5/22 , B01D39/16 , B32B5/12
Abstract: A laminated nonwoven fabric includes a first nonwoven fabric that comprises first fibers, and a second nonwoven fabric that comprises second fibers. The second nonwoven fabric is laminated on the first nonwoven fabric. An average fiber diameter D1 of the first fibers and an average fiber diameter D2 of the second fibers satisfy a relation of D1>D2. In viewed from a side of a principal surface of the second nonwoven fabric being not opposed to the first nonwoven fabric, a total area of first portions of the second fibers superimposed on the first fibers and existing on the nearer side than the first fibers is larger than a total area of second portions of the second fibers existing and superimposed on voids S of the first nonwoven fabric formed of the first fibers.
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Patent Agency Ranking
公开(公告)号：US10464003B2
公开(公告)日：2019-11-05
申请号：US15696221
申请日：2017-09-06
Inventor： Koji Motomura , Hiroto Sumida , Takahiko Murata , Takatoshi Mitsushima , Keiji Fujiwara
Abstract: There is provided a filter which includes a fiber layer and an adsorbent. The fiber layer includes fiber. The adsorbent is held in the fiber and adsorbs a chemical substance. The filter is divided into a plurality of sections by a fold. Each of the plurality of sections includes a first end portion positioned along the fold, a center portion adjacent to the first end portion, and a second end portion which counterposes the first end portion with the center portion interposed. The density of the adsorbent at the center portion is greater than the density of the adsorbent at the first end portion and at the second end portion.
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公开(公告)号：US10328665B2
公开(公告)日：2019-06-25
申请号：US15372794
申请日：2016-12-08
Inventor： Taichi Nakamura , Takayoshi Yamaguchi , Hiroto Sumida
Abstract: A nonwoven fabric contains a plurality of fibers having average fiber diameter Dave in a range from 10 nm to 3 μm, inclusive. The nonwoven fabric has a plurality of fusion portions among the plurality of fibers. The nonwoven fabric has a first principal surface and a second principal surface on an opposite side to the first principal surface. Average number Nh of the fusion portions observed per 500 μm2 on the first principal surface is six or more.
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公开(公告)号：US10195556B2
公开(公告)日：2019-02-05
申请号：US15191522
申请日：2016-06-23
Inventor： Koji Motomura , Takahiko Murata , Hiroto Sumida , Takatoshi Mitsushima , Keiji Fujiwara
Abstract: A laminated nonwoven fabric includes a first nonwoven fabric containing first fibers, a second nonwoven fabric containing second fibers, a third nonwoven fabric containing third fibers, and an adhesive. The second nonwoven fabric is laminated on the first nonwoven fabric, and the third nonwoven fabric is laminated on the second nonwoven fabric on an opposite side with respect to the first nonwoven fabric. The adhesive is disposed between the first nonwoven fabric and the third nonwoven fabric. An average fiber diameter of the second fibers is equal to or less than 3 μm, and is smaller than an average fiber diameter of the first fibers. The third nonwoven fabric has a protrusion including a part of the third fibers entangled with each other on a surface facing the second nonwoven fabric. At least a part of the adhesive is disposed between the protrusion and the first nonwoven fabric.
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公开(公告)号：US10413856B2
公开(公告)日：2019-09-17
申请号：US15695389
申请日：2017-09-05
Inventor： Koji Motomura , Hiroto Sumida , Takahiko Murata
Abstract: There is provided a stacked body which includes a porous base layer, a porous charged layer, a very fine-fiber layer, and an adsorbent. The base layer is configured with base fiber. The charged layer is configured with charged fiber. The very fine-fiber layer is interposed between the base layer and the charged layer and includes very fine fiber. The adsorbent is held in the very fine fiber and adsorbs a chemical substance. An average fiber diameter of the charged fiber is greater than an average fiber diameter of the very fine fiber.
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公开(公告)号：US10174441B2
公开(公告)日：2019-01-08
申请号：US15178815
申请日：2016-06-10
Inventor： Taichi Nakamura , Takayoshi Yamaguchi , Hiroto Sumida , Takahiro Kurokawa , Takatoshi Mitsushima
IPC: B01D53/22 , D01D5/00 , B32B5/02 , B32B5/26 , B01D39/16 , B01D39/20 , B32B5/08 , B32B7/02 , B32B7/12
Abstract: A laminated nonwoven fabric (NF) includes a first NF containing first fibers and a second NF containing second fibers and laminated on the first NF, and has a cut-off edge at an end thereof. An average diameter of the first fibers is larger than that of the second fibers not more than 3 μm. 50% by mass to 70% by mass, inclusive, of the second fibers satisfy x≥y, and 5% by mass to 30% by mass, inclusive, thereof satisfy x
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