公开(公告)号：US20200376443A1

公开(公告)日：2020-12-03

申请号：US16636624

申请日：2018-08-02

Applicant: NITTO DENKO CORPORATION

Inventor： Shijun Zheng ,  Isamu Kitahara ,  Yuji Yamashiro ,  Weiping Lin ,  John Ericson ,  Wanyun Hsieh ,  Ozair Siddiqui ,  Peng Wang ,  Craig Roger Bartels ,  Makoto Kobuke ,  Shunsuke Noumi ,  Hiroki Fujioka

IPC: B01D69/10 ,  B01D71/02 ,  B01D67/00 ,  B01D69/02 ,  C02F1/44 ,  C01B32/198

Abstract: Described herein are crosslinked graphene oxide and polycaroxylic acid based composite membranes that provide selective resistance for solutes while providing water permeability. Such composite membranes have a high water flux. The methods for making such membranes, and using the membranes for dehydrating or removing solutes from water are also described.

公开(公告)号：US10357747B2

公开(公告)日：2019-07-23

申请号：US15763331

申请日：2016-09-30

Applicant: NITTO DENKO CORPORATION

Inventor： Shinya Nishiyama ,  Taisuke Yamaguchi ,  Takahisa Konishi ,  Hiroki Fujioka ,  Takashi Kamada ,  Shinichi Inoue

IPC: C02F1/44 ,  B01D61/02 ,  B01D63/10 ,  B01D67/00 ,  B01D69/12 ,  B01D71/38 ,  B01D71/56 ,  B01D71/68 ,  C02F103/04 ,  C02F103/08 ,  C02F103/10 ,  C02F103/32

Abstract: A method for producing a spiral wound separation membrane element includes preparing a composite semipermeable membrane having a skin layer on the surface of a porous support. The method further includes forming on the skin layer a protective layer containing 35 mg/m2 or more of an anionic polyvinyl alcohol to prepare a protective layer-equipped composite semipermeable membrane, preparing an unwashed spiral wound separation membrane element from the protective layer-equipped composite semipermeable membrane, and passing wash water through the unwashed spiral wound separation membrane element to remove the protective layer on the skin layer.

公开(公告)号：US12128360B2

公开(公告)日：2024-10-29

申请号：US17189962

申请日：2021-03-02

Applicant: NITTO DENKO CORPORATION

Inventor： Masamitsu Taguchi ,  Hiroki Fujioka

IPC: B01D63/02 ,  B01D65/02

CPC classification number: B01D65/02 ,  B01D63/023 ,  B01D63/024 ,  B01D2321/04 ,  B01D2321/168

Abstract: A hollow fiber membrane module 100 includes: a plurality of hollow fiber membranes 10; a container 20 storing the plurality of hollow fiber membranes 10; and a feed water inlet 201 provided at one end portion of the container 20 such that a direction in which feed water flows into the container 20 is parallel to a longitudinal direction of the plurality of hollow fiber membranes 10. A permeation flux of the hollow fiber membranes 10 at a transmembrane pressure difference of 0.1 MPa is higher than or equal to 850 liter/m2/h.

公开(公告)号：US12179153B2

公开(公告)日：2024-12-31

申请号：US17639204

申请日：2020-07-28

Applicant: NITTO DENKO CORPORATION

Inventor： Masamitsu Taguchi ,  Hiroki Fujioka ,  Toshiaki Suga

IPC: B01D63/04 ,  B01D63/02 ,  B01D65/00 ,  C02F1/44 ,  C02F103/04

Abstract: A hollow fiber membrane module (100) of the present invention includes: a plurality of hollow fiber membranes (10); a binding portion (20) binding the plurality of hollow fiber membranes (10) at one end portions thereof; and a cap (30) having an internal space (30s) that communicates with each of the plurality of hollow fiber membranes (10), the cap (30) being integrated with the binding portion (20); and a housing (40) that houses the plurality of hollow fiber membranes (10) and the binding portion (20), and that has one end portion to which the cap (30) is attached. A unit (70) including the plurality of hollow fiber membranes (10), the binding portion (20), and the cap (30) is detached from the housing (40) and the unit (70) is attached to the housing (40) while integration of the binding portion (20) and the cap (30) is maintained.

公开(公告)号：US11565216B2

公开(公告)日：2023-01-31

申请号：US16969115

申请日：2019-09-25

Applicant: NITTO DENKO CORPORATION

Inventor： Hideyuki Yamane ,  Hiroki Fujioka ,  Toshiaki Suga

IPC: B01D63/02 ,  B01D63/04

Abstract: A hollow fiber membrane module (100) of the present disclosure includes: a plurality of hollow fiber membranes (10); a binding portion (20) binding the plurality of hollow fiber membranes (10) at one end portions thereof; and a cap (30) having an internal space (30s) that communicates with each of the plurality of hollow fiber membranes (10), the cap (30) being integrated with the binding portion (20). Specifically, no other component is present between the binding portion (20) and the cap (30).

公开(公告)号：US20210229029A1

公开(公告)日：2021-07-29

申请号：US15734498

申请日：2018-08-03

Applicant: NITTO DENKO CORPORATION

Inventor： Shijun Zheng ,  Isamu Kitahara ,  Yuji Yamashiro ,  Weiping Lin ,  John Ericson ,  Wanyun Hsieh ,  Ozair Siddiqui ,  Peng Wang ,  Craig Roger Bartels ,  Makoto Kobuke ,  Shunsuke Noumi ,  Hiroki Fujioka ,  Bita Bagge

IPC: B01D53/22 ,  B01D71/02 ,  B01D71/38 ,  B01D69/12 ,  B01D53/26 ,  B01D67/00 ,  B01D69/02

Abstract: Described herein are crosslinked graphene oxide and polycarboxylic acid based composite membranes that provide selective resistance for gases while providing water vapor permeability. Such composite membranes have a high water/air selectivity in permeability. The methods for making such membranes, and using the membranes for dehydrating or removing water vapor from gases are also described.