公开(公告)号：US10168059B2

公开(公告)日：2019-01-01

申请号：US15228206

申请日：2016-08-04

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Takayoshi Yamaguchi ,  Tadashi Maeda ,  Yosuke Wada

IPC: B03C3/155 ,  F24F3/16 ,  B03C3/09 ,  B01D46/00 ,  B01D46/52

Abstract: A filtering medium includes a nonwoven fabric and a first electrode having an input terminal of power. The first electrode is provided on a surface of the nonwoven fabric. Alternatively, in a case where the nonwoven fabric has a plurality of fiber layers, the first electrode may be provided between the fiber layers. An air purifier includes the filtering medium disposed between a sucker and a discharger of a gas, and an output terminal via which power is output to the first electrode of the filtering medium.

公开(公告)号：US10464286B2

公开(公告)日：2019-11-05

申请号：US15352739

申请日：2016-11-16

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Taichi Nakamura ,  Takayoshi Yamaguchi ,  Koji Motomura

IPC: B32B3/10 ,  B32B5/26 ,  B32B3/26 ,  B32B5/02 ,  B32B7/12 ,  B32B5/14 ,  D04H1/4374 ,  D04H1/593

Abstract: A laminated nonwoven fabric includes first to third nonwoven fabrics and an adhesive sandwiched between at least the second nonwoven fabric and the third nonwoven fabric. The second nonwoven fabric contains second fibers and is laminated on the first nonwoven fabric containing first fibers, and the third nonwoven fabric contains third fibers and is laminated on the second nonwoven fabric on an opposite side to the first nonwoven fabric. An average fiber diameter of the first fibers is larger than that of the second fibers. The second nonwoven fabric has first and second regions which exist mixedly with each other, and a density of the second fibers in the second region is lower than that in the first region. A part of the adhesive is present between a portion of the first nonwoven and a portion of the third nonwoven fabric which face the second region.

公开(公告)号：US09611573B2

公开(公告)日：2017-04-04

申请号：US14938469

申请日：2015-11-11

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Yuki Yoshioka ,  Takayoshi Yamaguchi ,  Takahiro Kurokawa

IPC: G01N21/75 ,  D04H3/018 ,  G01N33/52 ,  D04H1/4391 ,  D04H1/728

CPC classification number: D04H3/018 ,  D04H1/4391 ,  D04H1/728 ,  G01N33/521

Abstract: A nonwoven fabric includes a fiber including a first portion and a second portion connected to the first portion. A first fiber diameter of the first portion is smaller than a reference fiber diameter. A second fiber diameter of the second portion is equal to or greater than the reference fiber diameter. The reference fiber diameter is smaller than 1 μm. A ratio of a maximum fiber diameter of the second portion to a length of a linear line connecting both end portions of the second portion is from 1/10 to 1/3.

公开(公告)号：US10328665B2

公开(公告)日：2019-06-25

申请号：US15372794

申请日：2016-12-08

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Taichi Nakamura ,  Takayoshi Yamaguchi ,  Hiroto Sumida

IPC: B32B3/10 ,  B32B5/02 ,  B01D39/16 ,  C12N5/00

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.

公开(公告)号：US10173158B2

公开(公告)日：2019-01-08

申请号：US15167820

申请日：2016-05-27

Applicant: Panasonic Intellectual Property Management Co., Ltd.

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.

公开(公告)号：US10174441B2

公开(公告)日：2019-01-08

申请号：US15178815

申请日：2016-06-10

Applicant: Panasonic Intellectual Property Management Co., Ltd.

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