公开(公告)号：US10722849B2

公开(公告)日：2020-07-28

申请号：US16076814

申请日：2017-02-10

Applicant: NITTO DENKO CORPORATION ,  Weiping Lin

Inventor： Weiping Lin ,  Isamu Kitahara ,  Shijun Zheng ,  Peng Wang ,  John Ericson ,  Rebecca Romero

IPC: B01D71/02 ,  B01D69/10 ,  F16K17/40 ,  F16K15/00 ,  F16K25/00

Abstract: Described herein is a graphene-based valve element capable of passive and repeatable stopping or allowing fluid flow as a function of inlet pressure. Passive flow controller devices based on the valve element are also described.

公开(公告)号：US20220016570A1

公开(公告)日：2022-01-20

申请号：US17414812

申请日：2019-12-12

Applicant: NITTO DENKO CORPORATION

Inventor： Shijun Zheng ,  Weiping Lin ,  Peng Wang ,  Isamu Kitahara ,  Bita Bagge ,  John Ericson ,  Wanyun Hsieh ,  Yuji Yamashiro ,  Takashi Kondo

IPC: B01D53/26 ,  B01D69/12 ,  B01D71/80 ,  B01D71/52 ,  B01D71/56 ,  B01D71/58 ,  B01D71/68 ,  B01D69/10 ,  B01D69/02 ,  B01D53/22 ,  B01D67/00

Abstract: Described herein are polymeric 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.

公开(公告)号：US11117101B2

公开(公告)日：2021-09-14

申请号：US16492924

申请日：2018-03-23

Applicant: NITTO DENKO CORPORATION

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

IPC: B01D69/12 ,  B01D61/02 ,  B01D67/00 ,  B01D69/02 ,  B01D69/14 ,  B01D71/02 ,  B01D71/56 ,  B01D71/74

Abstract: Described herein is a crosslinked graphene and biopolymer (e.g. lignin) based composite membrane that provides selective resistance for solutes while providing water permeability. The membrane may include optional additional functional additives in a crosslinked material matrix that provides enhanced salt separation from water. Methods for making such membranes, and methods of using the membranes for dehydrating or removing solutes from water are also described.

公开(公告)号：US20210268430A1

公开(公告)日：2021-09-02

申请号：US17254765

申请日：2019-06-20

Applicant: NITTO DENKO CORPORATION

Inventor： Shijun Zheng ,  Weiping Lin ,  Peng Wang ,  Isamu Kitahara ,  Bita Bagge ,  John Ericson

IPC: B01D53/22 ,  B01D53/26 ,  B01D69/14 ,  B01D71/02 ,  B01D71/40 ,  B01D71/38 ,  B01D69/02 ,  B01D67/00 ,  B01D69/10

Abstract: Described herein is a graphene oxide and polymer based selectively permeable element that provides selective gas, and vapor resistance for dehumidification applications. The graphene oxide is cross-linked with polyvinyl alcohol, the polymer comprises an ammonium salt polymer such as poly(diallyldimethylammonium) chloride. Also described is a selectively permeable element where the graphene may be selected from reduced graphene oxide, graphene oxide, and is also functionalized or crosslinked. Also described is a selectively permeable element where there is crosslinking between the graphene and/or the polymers to provide enhanced gas resistance with water vapor permeability. A selectively permeable device is also described that incorporates the selectively permeable element and further comprises a substrate and a protective coating, encompassing the selectively permeable element. Also described are methods for making the aforementioned selectively permeable elements and related devices.

公开(公告)号：US20210229048A1

公开(公告)日：2021-07-29

申请号：US17050812

申请日：2019-05-02

Applicant: NITTO DENKO CORPORATION

Inventor： Shijun Zheng ,  Lin Weiping ,  Peng Wang ,  Isamu Kitahara ,  Bita Bagge ,  John Ericson

IPC: B01D71/02 ,  B01D69/12 ,  B01D71/52 ,  B01D71/40

Abstract: Described herein is a composite comprising a graphene material and a sulfonated polymer material. The graphene/sulfonated polymer composite is coated onto a substrate to provide a selectively permeable membrane. The selectively permeable membranes of the present disclosure provide high moisture permeability and low gas permeability.

公开(公告)号：US20210162353A1

公开(公告)日：2021-06-03

申请号：US17044941

申请日：2019-04-03

Applicant: NITTO DENKO CORPORATION

Inventor： Shijun Zheng ,  Weiping LIN ,  Peng Wang ,  Isamu Kitahara ,  Bita Bagge ,  John Ericson ,  Wanyun Hsieh ,  Yuji Yamashiro ,  Takashi Kondo

IPC: B01D69/14 ,  B01D69/10 ,  B01D69/12 ,  B01D69/02 ,  B01D71/02 ,  B01D71/80 ,  B01D71/62 ,  B01D71/66 ,  B01D53/22 ,  B01D53/26 ,  B01D67/00 ,  F24F3/14

Abstract: Described herein are crosslinked graphene oxide 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.

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.

公开(公告)号：US20200376442A1

公开(公告)日：2020-12-03

申请号：US16955007

申请日：2018-12-20

Applicant: NITTO DENKO CORPORATION

Inventor： Shijun Zheng ,  Weiping Lin ,  John Ericson ,  Isamu Kitahara ,  Ozair Siddiqui ,  Wan-Yun Hsieh ,  Peng Wang ,  Yuji Yamashiro ,  Craig Roger Bartels ,  Makoto Kobuke

IPC: B01D67/00 ,  B01D61/02 ,  B01D65/08 ,  B01D71/56 ,  B01D71/02 ,  B01D69/12 ,  C02F1/44

Abstract: Described herein are protective coatings for reverse osmosis membranes comprising coating mixtures of graphene oxide crosslinked with copolymers. The crosslinked GO copolymer mixture coatings provide protection from chlorine-based defoulers of saline water and unprocessed fluids. The coated membranes described herein create a reverse osmosis structure that has excellent water flux and salt rejection. The crosslinking copolymers can comprise an optionally substituted vinyl imidazole constituent unit and an optionally substituted acrylic amide constituent unit.

公开(公告)号：US20190015792A1

公开(公告)日：2019-01-17

申请号：US16076814

申请日：2017-02-10

Applicant: NITTO DENKO CORPORATION

Inventor： Weiping Lin ,  Isamu Kitahara ,  Shijun Zheng ,  Peng Wang ,  John Ericson ,  Rebecca Romero

IPC: B01D71/02 ,  B01D69/10 ,  F16K15/00 ,  F16K25/00

CPC classification number: B01D71/021 ,  B01D69/10 ,  B01D71/024 ,  B01D2323/30 ,  F16K15/00 ,  F16K17/40 ,  F16K25/005

Abstract: Described herein is a graphene-based valve element capable of passive and repeatable stopping or allowing fluid flow as a function of inlet pressure. Passive flow controller devices based on the valve element are also described.

公开(公告)号：US20200261861A1

公开(公告)日：2020-08-20

申请号：US16490466

申请日：2018-03-01

Applicant: NITTO DENKO CORPORATION

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

IPC: B01D69/14 ,  B01D61/02 ,  B01D69/12 ,  B01D71/02 ,  B01D71/38

Abstract: Described herein is a graphene and polyvinyl alcohol based multilayer composite membrane that provides selective resistance for solutes to pass the membrane while providing water permeability. A selectively permeable membrane comprising a crosslinked graphene with a polyvinyl alcohol and silica-nanoparticle layer that can provide enhanced salt separation from water, methods for making such membranes, and methods of using the membranes for dehydrating or removing solutes from water are also described.