Patent
US 10,442,709SELECTIVELY PERMEABLE GRAPHENE OXIDE MEMBRANE
Shijun Zheng
US
Copyright © 2026 Matter42. All rights reserved.
Patent
Atlas literature
Patent
US 10,442,709Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A membrane comprising: a porous substrate; and a graphene oxide layer comprising an optionally substituted cross-linked graphene oxide in fluid communication with the porous substrate; wherein the optionally substituted cross-linked graphene oxide comprises an optionally substituted graphene oxide covalently bonded to a cross-linkage represented by the Formula: SVG 15380797.01-07-2019.JQMNF₇DJRXEAPX4.CLM.1.svg 1.13 1.18 Black and white wherein R is H, C O 2 H, C O 2 Li, C O 2 Na, or C O 2 K. Currently amended
The membrane of claim 1, wherein the cross-linkage is: SVG 15380797.01-07-2019.JQMNF₇DJRXEAPX4.CLM.2.svg 1.06 2.45 Black and white Response to Office Action dated N3253.10016US 0 2 (F₆₉₆₅) Original
The membrane of claim 1, wherein the porous substrate comprises a polymer or hollow fibers. Original
The membrane of claim 1, wherein the optionally substituted cross-linked bonded graphene oxide comprises platelets that have a size that is about 0.05 pm to about 50 pm. Previously presented
The membrane of claim 1, wherein the optionally substituted cross-linked graphene oxide is about 20 atom% to about 90 atom% carbon. Original
The membrane of claim 1, wherein the optionally substituted cross-linked graphene oxide is prepared by reacting an optionally substituted meta-phenylenediamine (MPD) with an optionally substituted graphene oxide (GO), wherein the weight ratio of optionally substituted meta-phenylenediamine to optionally substituted graphene oxide (MPD/GO) is in a range of about 0.1 to about 100. Original
The membrane of claim 1, wherein the optionally substituted graphene oxide is formed by reacting a non-functionalized graphene oxide, reduced-graphene oxide, functionalized graphene oxide, functionalized and reduced-graphene oxide, or a combination thereof with a cross-linker. Previously presented
The membrane of claim 1, further comprising a salt rejection layer. Original
The membrane of claim 1, wherein the membrane further comprises a protective layer, wherein the protective layer comprises a hydrophilic polymer. Original
The membrane of claim 1, wherein the thickness of the graphene oxide layer is about 5 nm to about 200 nm. Original
A method for dehydrating an unprocessed fluid, comprising exposing the unprocessed fluid to the membrane of claim 1. Withdrawn
A method for removing a solute from an unprocessed solution, comprising exposing the unprocessed solution to the membrane of claim 1. Withdrawn
(Withdrawn, Previously Presented) A method of making a membrane of claim 1, comprising: (a) resting a solution comprising an optionally substituted graphene oxide and a water soluble cross-linker for about 30 minutes to about 12 hours to create a coating mixture; (b) applying the coating mixture to a substrate; (c) repeating step (b) as necessary to achieve the desired thickness or number of layers; and (d) curing the optionally substituted graphene oxide and the water soluble cross- linker upon the substrate at about 50 " C to about 120 " C for about 15 minutes to about Response to Office Action dated N3253.10016US 0 2 (F₆₉₆₅) 2 hours so that the optionally substituted graphene oxide and the water soluble cross- linker are covalently bonded to form the cross-linkage. Withdrawn
(Withdrawn, Previously Presented) A method of making a membrane of claim 1 from an optionally substituted meta-phenylenediamine cross-linker and an optionally substituted graphene oxide, comprising: (a) separately applying to a substrate: 1) an aqueous solution of an optionally substituted graphene oxide and 2) an aqueous solution of an optionally substituted meta-phenylenediamine cross-linker; (b) repeating step (a) as necessary to achieve the desired thickness or number of layers; and (c) curing the optionally substituted graphene oxide and the cross-linker upon the substrate at about 50 " C to about 120 " C for about 15 minutes to about 2 hours until the optionally substituted graphene oxide and optionally substituted meta-phenylenediamine cross- linker are covalently bonded to form the cross-linkage. Withdrawn
Canceled
Layer stacks claimed or described, ordered top of device to substrate.
selectively permeable graphene oxide membrane
Materials described outside the worked examples.
optionally substituted cross-linked graphene oxide
cross-linkage
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Thickness | 5–200 nm | — |
Duration | 1800–43200 s |
Patent
Atlas literature
Patent
US 10,442,709Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A membrane comprising: a porous substrate; and a graphene oxide layer comprising an optionally substituted cross-linked graphene oxide in fluid communication with the porous substrate; wherein the optionally substituted cross-linked graphene oxide comprises an optionally substituted graphene oxide covalently bonded to a cross-linkage represented by the Formula: SVG 15380797.01-07-2019.JQMNF₇DJRXEAPX4.CLM.1.svg 1.13 1.18 Black and white wherein R is H, C O 2 H, C O 2 Li, C O 2 Na, or C O 2 K. Currently amended
The membrane of claim 1, wherein the cross-linkage is: SVG 15380797.01-07-2019.JQMNF₇DJRXEAPX4.CLM.2.svg 1.06 2.45 Black and white Response to Office Action dated N3253.10016US 0 2 (F₆₉₆₅) Original
The membrane of claim 1, wherein the porous substrate comprises a polymer or hollow fibers. Original
The membrane of claim 1, wherein the optionally substituted cross-linked bonded graphene oxide comprises platelets that have a size that is about 0.05 pm to about 50 pm. Previously presented
The membrane of claim 1, wherein the optionally substituted cross-linked graphene oxide is about 20 atom% to about 90 atom% carbon. Original
The membrane of claim 1, wherein the optionally substituted cross-linked graphene oxide is prepared by reacting an optionally substituted meta-phenylenediamine (MPD) with an optionally substituted graphene oxide (GO), wherein the weight ratio of optionally substituted meta-phenylenediamine to optionally substituted graphene oxide (MPD/GO) is in a range of about 0.1 to about 100. Original
The membrane of claim 1, wherein the optionally substituted graphene oxide is formed by reacting a non-functionalized graphene oxide, reduced-graphene oxide, functionalized graphene oxide, functionalized and reduced-graphene oxide, or a combination thereof with a cross-linker. Previously presented
The membrane of claim 1, further comprising a salt rejection layer. Original
The membrane of claim 1, wherein the membrane further comprises a protective layer, wherein the protective layer comprises a hydrophilic polymer. Original
The membrane of claim 1, wherein the thickness of the graphene oxide layer is about 5 nm to about 200 nm. Original
A method for dehydrating an unprocessed fluid, comprising exposing the unprocessed fluid to the membrane of claim 1. Withdrawn
A method for removing a solute from an unprocessed solution, comprising exposing the unprocessed solution to the membrane of claim 1. Withdrawn
(Withdrawn, Previously Presented) A method of making a membrane of claim 1, comprising: (a) resting a solution comprising an optionally substituted graphene oxide and a water soluble cross-linker for about 30 minutes to about 12 hours to create a coating mixture; (b) applying the coating mixture to a substrate; (c) repeating step (b) as necessary to achieve the desired thickness or number of layers; and (d) curing the optionally substituted graphene oxide and the water soluble cross- linker upon the substrate at about 50 " C to about 120 " C for about 15 minutes to about Response to Office Action dated N3253.10016US 0 2 (F₆₉₆₅) 2 hours so that the optionally substituted graphene oxide and the water soluble cross- linker are covalently bonded to form the cross-linkage. Withdrawn
(Withdrawn, Previously Presented) A method of making a membrane of claim 1 from an optionally substituted meta-phenylenediamine cross-linker and an optionally substituted graphene oxide, comprising: (a) separately applying to a substrate: 1) an aqueous solution of an optionally substituted graphene oxide and 2) an aqueous solution of an optionally substituted meta-phenylenediamine cross-linker; (b) repeating step (a) as necessary to achieve the desired thickness or number of layers; and (c) curing the optionally substituted graphene oxide and the cross-linker upon the substrate at about 50 " C to about 120 " C for about 15 minutes to about 2 hours until the optionally substituted graphene oxide and optionally substituted meta-phenylenediamine cross- linker are covalently bonded to form the cross-linkage. Withdrawn
Canceled
Layer stacks claimed or described, ordered top of device to substrate.
selectively permeable graphene oxide membrane
Materials described outside the worked examples.
optionally substituted cross-linked graphene oxide
cross-linkage
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Thickness | 5–200 nm | — |
Duration | 1800–43200 s |
Patent
Atlas literature
Patent
US 10,442,709Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A membrane comprising: a porous substrate; and a graphene oxide layer comprising an optionally substituted cross-linked graphene oxide in fluid communication with the porous substrate; wherein the optionally substituted cross-linked graphene oxide comprises an optionally substituted graphene oxide covalently bonded to a cross-linkage represented by the Formula: SVG 15380797.01-07-2019.JQMNF₇DJRXEAPX4.CLM.1.svg 1.13 1.18 Black and white wherein R is H, C O 2 H, C O 2 Li, C O 2 Na, or C O 2 K. Currently amended
The membrane of claim 1, wherein the cross-linkage is: SVG 15380797.01-07-2019.JQMNF₇DJRXEAPX4.CLM.2.svg 1.06 2.45 Black and white Response to Office Action dated N3253.10016US 0 2 (F₆₉₆₅) Original
The membrane of claim 1, wherein the porous substrate comprises a polymer or hollow fibers. Original
The membrane of claim 1, wherein the optionally substituted cross-linked bonded graphene oxide comprises platelets that have a size that is about 0.05 pm to about 50 pm. Previously presented
The membrane of claim 1, wherein the optionally substituted cross-linked graphene oxide is about 20 atom% to about 90 atom% carbon. Original
The membrane of claim 1, wherein the optionally substituted cross-linked graphene oxide is prepared by reacting an optionally substituted meta-phenylenediamine (MPD) with an optionally substituted graphene oxide (GO), wherein the weight ratio of optionally substituted meta-phenylenediamine to optionally substituted graphene oxide (MPD/GO) is in a range of about 0.1 to about 100. Original
The membrane of claim 1, wherein the optionally substituted graphene oxide is formed by reacting a non-functionalized graphene oxide, reduced-graphene oxide, functionalized graphene oxide, functionalized and reduced-graphene oxide, or a combination thereof with a cross-linker. Previously presented
The membrane of claim 1, further comprising a salt rejection layer. Original
The membrane of claim 1, wherein the membrane further comprises a protective layer, wherein the protective layer comprises a hydrophilic polymer. Original
The membrane of claim 1, wherein the thickness of the graphene oxide layer is about 5 nm to about 200 nm. Original
A method for dehydrating an unprocessed fluid, comprising exposing the unprocessed fluid to the membrane of claim 1. Withdrawn
A method for removing a solute from an unprocessed solution, comprising exposing the unprocessed solution to the membrane of claim 1. Withdrawn
(Withdrawn, Previously Presented) A method of making a membrane of claim 1, comprising: (a) resting a solution comprising an optionally substituted graphene oxide and a water soluble cross-linker for about 30 minutes to about 12 hours to create a coating mixture; (b) applying the coating mixture to a substrate; (c) repeating step (b) as necessary to achieve the desired thickness or number of layers; and (d) curing the optionally substituted graphene oxide and the water soluble cross- linker upon the substrate at about 50 " C to about 120 " C for about 15 minutes to about Response to Office Action dated N3253.10016US 0 2 (F₆₉₆₅) 2 hours so that the optionally substituted graphene oxide and the water soluble cross- linker are covalently bonded to form the cross-linkage. Withdrawn
(Withdrawn, Previously Presented) A method of making a membrane of claim 1 from an optionally substituted meta-phenylenediamine cross-linker and an optionally substituted graphene oxide, comprising: (a) separately applying to a substrate: 1) an aqueous solution of an optionally substituted graphene oxide and 2) an aqueous solution of an optionally substituted meta-phenylenediamine cross-linker; (b) repeating step (a) as necessary to achieve the desired thickness or number of layers; and (c) curing the optionally substituted graphene oxide and the cross-linker upon the substrate at about 50 " C to about 120 " C for about 15 minutes to about 2 hours until the optionally substituted graphene oxide and optionally substituted meta-phenylenediamine cross- linker are covalently bonded to form the cross-linkage. Withdrawn
Canceled
Layer stacks claimed or described, ordered top of device to substrate.
selectively permeable graphene oxide membrane
Materials described outside the worked examples.
optionally substituted cross-linked graphene oxide
cross-linkage
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Thickness | 5–200 nm | — |
Duration | 1800–43200 s |
Patent
Atlas literature
Patent
US 10,442,709Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A membrane comprising: a porous substrate; and a graphene oxide layer comprising an optionally substituted cross-linked graphene oxide in fluid communication with the porous substrate; wherein the optionally substituted cross-linked graphene oxide comprises an optionally substituted graphene oxide covalently bonded to a cross-linkage represented by the Formula: SVG 15380797.01-07-2019.JQMNF₇DJRXEAPX4.CLM.1.svg 1.13 1.18 Black and white wherein R is H, C O 2 H, C O 2 Li, C O 2 Na, or C O 2 K. Currently amended
The membrane of claim 1, wherein the cross-linkage is: SVG 15380797.01-07-2019.JQMNF₇DJRXEAPX4.CLM.2.svg 1.06 2.45 Black and white Response to Office Action dated N3253.10016US 0 2 (F₆₉₆₅) Original
The membrane of claim 1, wherein the porous substrate comprises a polymer or hollow fibers. Original
The membrane of claim 1, wherein the optionally substituted cross-linked bonded graphene oxide comprises platelets that have a size that is about 0.05 pm to about 50 pm. Previously presented
The membrane of claim 1, wherein the optionally substituted cross-linked graphene oxide is about 20 atom% to about 90 atom% carbon. Original
The membrane of claim 1, wherein the optionally substituted cross-linked graphene oxide is prepared by reacting an optionally substituted meta-phenylenediamine (MPD) with an optionally substituted graphene oxide (GO), wherein the weight ratio of optionally substituted meta-phenylenediamine to optionally substituted graphene oxide (MPD/GO) is in a range of about 0.1 to about 100. Original
The membrane of claim 1, wherein the optionally substituted graphene oxide is formed by reacting a non-functionalized graphene oxide, reduced-graphene oxide, functionalized graphene oxide, functionalized and reduced-graphene oxide, or a combination thereof with a cross-linker. Previously presented
The membrane of claim 1, further comprising a salt rejection layer. Original
The membrane of claim 1, wherein the membrane further comprises a protective layer, wherein the protective layer comprises a hydrophilic polymer. Original
The membrane of claim 1, wherein the thickness of the graphene oxide layer is about 5 nm to about 200 nm. Original
A method for dehydrating an unprocessed fluid, comprising exposing the unprocessed fluid to the membrane of claim 1. Withdrawn
A method for removing a solute from an unprocessed solution, comprising exposing the unprocessed solution to the membrane of claim 1. Withdrawn
(Withdrawn, Previously Presented) A method of making a membrane of claim 1, comprising: (a) resting a solution comprising an optionally substituted graphene oxide and a water soluble cross-linker for about 30 minutes to about 12 hours to create a coating mixture; (b) applying the coating mixture to a substrate; (c) repeating step (b) as necessary to achieve the desired thickness or number of layers; and (d) curing the optionally substituted graphene oxide and the water soluble cross- linker upon the substrate at about 50 " C to about 120 " C for about 15 minutes to about Response to Office Action dated N3253.10016US 0 2 (F₆₉₆₅) 2 hours so that the optionally substituted graphene oxide and the water soluble cross- linker are covalently bonded to form the cross-linkage. Withdrawn
(Withdrawn, Previously Presented) A method of making a membrane of claim 1 from an optionally substituted meta-phenylenediamine cross-linker and an optionally substituted graphene oxide, comprising: (a) separately applying to a substrate: 1) an aqueous solution of an optionally substituted graphene oxide and 2) an aqueous solution of an optionally substituted meta-phenylenediamine cross-linker; (b) repeating step (a) as necessary to achieve the desired thickness or number of layers; and (c) curing the optionally substituted graphene oxide and the cross-linker upon the substrate at about 50 " C to about 120 " C for about 15 minutes to about 2 hours until the optionally substituted graphene oxide and optionally substituted meta-phenylenediamine cross- linker are covalently bonded to form the cross-linkage. Withdrawn
Canceled
Layer stacks claimed or described, ordered top of device to substrate.
selectively permeable graphene oxide membrane
Materials described outside the worked examples.
optionally substituted cross-linked graphene oxide
cross-linkage
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Thickness | 5–200 nm | — |
Duration | 1800–43200 s |
porous substrate (polymer or hollow fibers)
optionally substituted meta-phenylenediamine (MPD)
reduced-graphene oxide
functionalized graphene oxide
polyamide
trimesoyl chloride
hydrophilic polymer
| — |
Duration | 900–7200 s | — |
porous substrate (polymer or hollow fibers)
optionally substituted meta-phenylenediamine (MPD)
reduced-graphene oxide
functionalized graphene oxide
polyamide
trimesoyl chloride
hydrophilic polymer
| — |
Duration | 900–7200 s | — |
porous substrate (polymer or hollow fibers)
optionally substituted meta-phenylenediamine (MPD)
reduced-graphene oxide
functionalized graphene oxide
polyamide
trimesoyl chloride
hydrophilic polymer
| — |
Duration | 900–7200 s | — |
porous substrate (polymer or hollow fibers)
optionally substituted meta-phenylenediamine (MPD)
reduced-graphene oxide
functionalized graphene oxide
polyamide
trimesoyl chloride
hydrophilic polymer
| — |
Duration | 900–7200 s | — |