Patent
US 10,351,433OF INVENTION
Seung-yol Jeong
US
Copyright © 2026 Matter42. All rights reserved.
Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 is a schematic view showing the procedure and method of cation- r interaction of low-defectiveness/high-purity graphene oxide and the result of …
FIG. 2 is a graph showing the results of comparing the dispersity of cation- r interacting reduced graphene oxide with that of reduced graphene oxide depending …
FIG. 3 is a graph showing the result of formation of cation- r interaction, physical evidence and comparative example of graphene oxide depending on 13C NMR …
FIG. 4 presents graphs showing the changes in oxidation groups of graphene oxide and reduced graphene oxide and the comparative example thereof depending on …
FIG. 5 is a photograph showing the SEM and AFM images of the C IRGO of the present invention, wherein the SEM and AFM images of the C IRGO of Example 1 were …
FIG. 6 presents graphs showing the results of cation- r interaction using the resonance Raman spectrum measurement according to an embodiment of the present …
FIG. 7 is a schematic view showing a field-effect transistor of cation- r interacting reduced graphene oxide according to the present invention. This field-effect …
FIG. 8 presents graphs showing the physical evidence of the cation doping effect and charge mobility of reduced graphene oxide and cation- r interacting reduced …
FIG. 9. BEST MODE OF THE INVENTION [00052] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the …
FIG. 10 is a graph showing the results of measurement of viscosity of high- concentration graphene oxide prepared by the process of
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A method of manufacturing a cation-reactive reduced graphene oxide, comprising the steps of: 1) synthesizing powdered graphite oxide flakes from powdered graphite flakes; 2) dispersing the graphite oxide flakes into an alkaline solution and stripping the graphite oxide flakes to form graphene oxide dispersed solution, said alkaline solution being selected from a group consisting of an aqueous sodium hydroxide (Na O H), an aqueous potassium hydroxide (KOH), an aqueous ammonium hydroxide (NH 4 O H), an aqueous lithium hydroxide (Li O H), and an aqueous calcium hydroxide (C a(OH) 2); 3) performing reaction of the graphene oxide dispersed solution at 1 0C-200 °C for 1 m in ~ 10 hr to remove a local oxygen functional group from an sp Z region of the graphene oxide and cause interaction of a cation and a ur -structure in an sp Z region of the graphene oxide to form a cation-reactive graphene oxide dispersed solution; 4) reducing said cation-reactive graphene oxide to prepare cation-reactive reduced graphene oxide by using reductant, said reductant being at least one of sodium hydroxide (Na O H), potassium hydroxide (KOH), ammonium hydroxide (NH 4 O H), sodium tetrahydroborate (NaBH 4), hydrazine (N 2 H 4), hydroionic acid, ascorbic acid, and vitamin C. Currently amended
The method of claim 1, wherein, in step 1), the graphite oxide flakes are formed by acid-treating powdered graphite flakes and then washing the acid- treated graphite flakes with an aqueous solution to remove impurities therefrom. Original
(Previously Amended) The method of claim 1, wherein the alkaline solution has a pH of 8 or more. Currently amended
(Previously Amended) The method of claim 1, further comprising a step for freeze drying the cation-reactive graphene oxide dispersed solution formed in step 3) into cation-reactive graphene oxide powder. Currently amended
5-6. (Previously Canceled) Canceled
Canceled
8-9. (Previously Canceled) Canceled
Canceled
(Previously Canceled) Canceled
(Previously Canceled) Canceled
Canceled
16-18. (Previously Canceled) Canceled
Canceled
19-21. Canceled
Canceled
(Previously Canceled) Canceled
Canceled
Materials described outside the worked examples.
graphite oxide flakes (powdered)
graphite flakes (powdered)
aqueous sodium hydroxide
NaOH
aqueous potassium hydroxide
KOH
aqueous ammonium hydroxide
NH₄OH
aqueous lithium hydroxide
LiOH
aqueous calcium hydroxide
Ca(OH)2
cation-reactive graphene oxide
cation-reactive reduced graphene oxide
sodium tetrahydroborate
NaBH₄
hydrazine
N₂H₄
ascorbic acid/vitamin C
graphite oxide flakes (acid-treated, washed)
fuming nitric acid
HNO₃
sulfuric acid
H₂SO₄
cation-reactive graphene oxide powder (freeze-dried)
graphene oxide dispersed solution
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 2 is a graph showing the results of comparing the dispersity of cation- r interacting reduced graphene oxide with that of reduced graphene oxide depending …
FIG. 2 is a graph showing the results of comparing the dispersity of cation- r interacting reduced graphene oxide with that of reduced graphene oxide depending …
FIG. 3 is a graph showing the result of formation of cation- r interaction, physical evidence and comparative example of graphene oxide depending on 13C NMR …
FIG. 4 presents graphs showing the changes in oxidation groups of graphene oxide and reduced graphene oxide and the comparative example thereof depending on …
FIG. 5 is a photograph showing the SEM and AFM images of the C IRGO of the present invention, wherein the SEM and AFM images of the C IRGO of Example 1 were …
FIG. 5 is a photograph showing the SEM and AFM images of the C IRGO of the present invention, wherein the SEM and AFM images of the C IRGO of Example 1 were …
FIG. 6 presents graphs showing the results of cation- r interaction using the resonance Raman spectrum measurement according to an embodiment of the present …
FIG. 7 is a schematic view showing a field-effect transistor of cation- r interacting reduced graphene oxide according to the present invention. This field-effect …
FIG. 8 presents graphs showing the physical evidence of the cation doping effect and charge mobility of reduced graphene oxide and cation- r interacting reduced …
FIG. 10 is a graph showing the results of measurement of viscosity of high- concentration graphene oxide prepared by the process of
Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 is a schematic view showing the procedure and method of cation- r interaction of low-defectiveness/high-purity graphene oxide and the result of …
FIG. 2 is a graph showing the results of comparing the dispersity of cation- r interacting reduced graphene oxide with that of reduced graphene oxide depending …
FIG. 3 is a graph showing the result of formation of cation- r interaction, physical evidence and comparative example of graphene oxide depending on 13C NMR …
FIG. 4 presents graphs showing the changes in oxidation groups of graphene oxide and reduced graphene oxide and the comparative example thereof depending on …
FIG. 5 is a photograph showing the SEM and AFM images of the C IRGO of the present invention, wherein the SEM and AFM images of the C IRGO of Example 1 were …
FIG. 6 presents graphs showing the results of cation- r interaction using the resonance Raman spectrum measurement according to an embodiment of the present …
FIG. 7 is a schematic view showing a field-effect transistor of cation- r interacting reduced graphene oxide according to the present invention. This field-effect …
FIG. 8 presents graphs showing the physical evidence of the cation doping effect and charge mobility of reduced graphene oxide and cation- r interacting reduced …
FIG. 9. BEST MODE OF THE INVENTION [00052] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the …
FIG. 10 is a graph showing the results of measurement of viscosity of high- concentration graphene oxide prepared by the process of
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A method of manufacturing a cation-reactive reduced graphene oxide, comprising the steps of: 1) synthesizing powdered graphite oxide flakes from powdered graphite flakes; 2) dispersing the graphite oxide flakes into an alkaline solution and stripping the graphite oxide flakes to form graphene oxide dispersed solution, said alkaline solution being selected from a group consisting of an aqueous sodium hydroxide (Na O H), an aqueous potassium hydroxide (KOH), an aqueous ammonium hydroxide (NH 4 O H), an aqueous lithium hydroxide (Li O H), and an aqueous calcium hydroxide (C a(OH) 2); 3) performing reaction of the graphene oxide dispersed solution at 1 0C-200 °C for 1 m in ~ 10 hr to remove a local oxygen functional group from an sp Z region of the graphene oxide and cause interaction of a cation and a ur -structure in an sp Z region of the graphene oxide to form a cation-reactive graphene oxide dispersed solution; 4) reducing said cation-reactive graphene oxide to prepare cation-reactive reduced graphene oxide by using reductant, said reductant being at least one of sodium hydroxide (Na O H), potassium hydroxide (KOH), ammonium hydroxide (NH 4 O H), sodium tetrahydroborate (NaBH 4), hydrazine (N 2 H 4), hydroionic acid, ascorbic acid, and vitamin C. Currently amended
The method of claim 1, wherein, in step 1), the graphite oxide flakes are formed by acid-treating powdered graphite flakes and then washing the acid- treated graphite flakes with an aqueous solution to remove impurities therefrom. Original
(Previously Amended) The method of claim 1, wherein the alkaline solution has a pH of 8 or more. Currently amended
(Previously Amended) The method of claim 1, further comprising a step for freeze drying the cation-reactive graphene oxide dispersed solution formed in step 3) into cation-reactive graphene oxide powder. Currently amended
5-6. (Previously Canceled) Canceled
Canceled
8-9. (Previously Canceled) Canceled
Canceled
(Previously Canceled) Canceled
(Previously Canceled) Canceled
Canceled
16-18. (Previously Canceled) Canceled
Canceled
19-21. Canceled
Canceled
(Previously Canceled) Canceled
Canceled
Materials described outside the worked examples.
graphite oxide flakes (powdered)
graphite flakes (powdered)
aqueous sodium hydroxide
NaOH
aqueous potassium hydroxide
KOH
aqueous ammonium hydroxide
NH₄OH
aqueous lithium hydroxide
LiOH
aqueous calcium hydroxide
Ca(OH)2
cation-reactive graphene oxide
cation-reactive reduced graphene oxide
sodium tetrahydroborate
NaBH₄
hydrazine
N₂H₄
ascorbic acid/vitamin C
graphite oxide flakes (acid-treated, washed)
fuming nitric acid
HNO₃
sulfuric acid
H₂SO₄
cation-reactive graphene oxide powder (freeze-dried)
graphene oxide dispersed solution
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 2 is a graph showing the results of comparing the dispersity of cation- r interacting reduced graphene oxide with that of reduced graphene oxide depending …
FIG. 2 is a graph showing the results of comparing the dispersity of cation- r interacting reduced graphene oxide with that of reduced graphene oxide depending …
FIG. 3 is a graph showing the result of formation of cation- r interaction, physical evidence and comparative example of graphene oxide depending on 13C NMR …
FIG. 4 presents graphs showing the changes in oxidation groups of graphene oxide and reduced graphene oxide and the comparative example thereof depending on …
FIG. 5 is a photograph showing the SEM and AFM images of the C IRGO of the present invention, wherein the SEM and AFM images of the C IRGO of Example 1 were …
FIG. 5 is a photograph showing the SEM and AFM images of the C IRGO of the present invention, wherein the SEM and AFM images of the C IRGO of Example 1 were …
FIG. 6 presents graphs showing the results of cation- r interaction using the resonance Raman spectrum measurement according to an embodiment of the present …
FIG. 7 is a schematic view showing a field-effect transistor of cation- r interacting reduced graphene oxide according to the present invention. This field-effect …
FIG. 8 presents graphs showing the physical evidence of the cation doping effect and charge mobility of reduced graphene oxide and cation- r interacting reduced …
FIG. 10 is a graph showing the results of measurement of viscosity of high- concentration graphene oxide prepared by the process of
Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 is a schematic view showing the procedure and method of cation- r interaction of low-defectiveness/high-purity graphene oxide and the result of …
FIG. 2 is a graph showing the results of comparing the dispersity of cation- r interacting reduced graphene oxide with that of reduced graphene oxide depending …
FIG. 3 is a graph showing the result of formation of cation- r interaction, physical evidence and comparative example of graphene oxide depending on 13C NMR …
FIG. 4 presents graphs showing the changes in oxidation groups of graphene oxide and reduced graphene oxide and the comparative example thereof depending on …
FIG. 5 is a photograph showing the SEM and AFM images of the C IRGO of the present invention, wherein the SEM and AFM images of the C IRGO of Example 1 were …
FIG. 6 presents graphs showing the results of cation- r interaction using the resonance Raman spectrum measurement according to an embodiment of the present …
FIG. 7 is a schematic view showing a field-effect transistor of cation- r interacting reduced graphene oxide according to the present invention. This field-effect …
FIG. 8 presents graphs showing the physical evidence of the cation doping effect and charge mobility of reduced graphene oxide and cation- r interacting reduced …
FIG. 9. BEST MODE OF THE INVENTION [00052] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the …
FIG. 10 is a graph showing the results of measurement of viscosity of high- concentration graphene oxide prepared by the process of
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A method of manufacturing a cation-reactive reduced graphene oxide, comprising the steps of: 1) synthesizing powdered graphite oxide flakes from powdered graphite flakes; 2) dispersing the graphite oxide flakes into an alkaline solution and stripping the graphite oxide flakes to form graphene oxide dispersed solution, said alkaline solution being selected from a group consisting of an aqueous sodium hydroxide (Na O H), an aqueous potassium hydroxide (KOH), an aqueous ammonium hydroxide (NH 4 O H), an aqueous lithium hydroxide (Li O H), and an aqueous calcium hydroxide (C a(OH) 2); 3) performing reaction of the graphene oxide dispersed solution at 1 0C-200 °C for 1 m in ~ 10 hr to remove a local oxygen functional group from an sp Z region of the graphene oxide and cause interaction of a cation and a ur -structure in an sp Z region of the graphene oxide to form a cation-reactive graphene oxide dispersed solution; 4) reducing said cation-reactive graphene oxide to prepare cation-reactive reduced graphene oxide by using reductant, said reductant being at least one of sodium hydroxide (Na O H), potassium hydroxide (KOH), ammonium hydroxide (NH 4 O H), sodium tetrahydroborate (NaBH 4), hydrazine (N 2 H 4), hydroionic acid, ascorbic acid, and vitamin C. Currently amended
The method of claim 1, wherein, in step 1), the graphite oxide flakes are formed by acid-treating powdered graphite flakes and then washing the acid- treated graphite flakes with an aqueous solution to remove impurities therefrom. Original
(Previously Amended) The method of claim 1, wherein the alkaline solution has a pH of 8 or more. Currently amended
(Previously Amended) The method of claim 1, further comprising a step for freeze drying the cation-reactive graphene oxide dispersed solution formed in step 3) into cation-reactive graphene oxide powder. Currently amended
5-6. (Previously Canceled) Canceled
Canceled
8-9. (Previously Canceled) Canceled
Canceled
(Previously Canceled) Canceled
(Previously Canceled) Canceled
Canceled
16-18. (Previously Canceled) Canceled
Canceled
19-21. Canceled
Canceled
(Previously Canceled) Canceled
Canceled
Materials described outside the worked examples.
graphite oxide flakes (powdered)
graphite flakes (powdered)
aqueous sodium hydroxide
NaOH
aqueous potassium hydroxide
KOH
aqueous ammonium hydroxide
NH₄OH
aqueous lithium hydroxide
LiOH
aqueous calcium hydroxide
Ca(OH)2
cation-reactive graphene oxide
cation-reactive reduced graphene oxide
sodium tetrahydroborate
NaBH₄
hydrazine
N₂H₄
ascorbic acid/vitamin C
graphite oxide flakes (acid-treated, washed)
fuming nitric acid
HNO₃
sulfuric acid
H₂SO₄
cation-reactive graphene oxide powder (freeze-dried)
graphene oxide dispersed solution
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 2 is a graph showing the results of comparing the dispersity of cation- r interacting reduced graphene oxide with that of reduced graphene oxide depending …
FIG. 2 is a graph showing the results of comparing the dispersity of cation- r interacting reduced graphene oxide with that of reduced graphene oxide depending …
FIG. 3 is a graph showing the result of formation of cation- r interaction, physical evidence and comparative example of graphene oxide depending on 13C NMR …
FIG. 4 presents graphs showing the changes in oxidation groups of graphene oxide and reduced graphene oxide and the comparative example thereof depending on …
FIG. 5 is a photograph showing the SEM and AFM images of the C IRGO of the present invention, wherein the SEM and AFM images of the C IRGO of Example 1 were …
FIG. 5 is a photograph showing the SEM and AFM images of the C IRGO of the present invention, wherein the SEM and AFM images of the C IRGO of Example 1 were …
FIG. 6 presents graphs showing the results of cation- r interaction using the resonance Raman spectrum measurement according to an embodiment of the present …
FIG. 7 is a schematic view showing a field-effect transistor of cation- r interacting reduced graphene oxide according to the present invention. This field-effect …
FIG. 8 presents graphs showing the physical evidence of the cation doping effect and charge mobility of reduced graphene oxide and cation- r interacting reduced …
FIG. 10 is a graph showing the results of measurement of viscosity of high- concentration graphene oxide prepared by the process of
Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 is a schematic view showing the procedure and method of cation- r interaction of low-defectiveness/high-purity graphene oxide and the result of …
FIG. 2 is a graph showing the results of comparing the dispersity of cation- r interacting reduced graphene oxide with that of reduced graphene oxide depending …
FIG. 3 is a graph showing the result of formation of cation- r interaction, physical evidence and comparative example of graphene oxide depending on 13C NMR …
FIG. 4 presents graphs showing the changes in oxidation groups of graphene oxide and reduced graphene oxide and the comparative example thereof depending on …
FIG. 5 is a photograph showing the SEM and AFM images of the C IRGO of the present invention, wherein the SEM and AFM images of the C IRGO of Example 1 were …
FIG. 6 presents graphs showing the results of cation- r interaction using the resonance Raman spectrum measurement according to an embodiment of the present …
FIG. 7 is a schematic view showing a field-effect transistor of cation- r interacting reduced graphene oxide according to the present invention. This field-effect …
FIG. 8 presents graphs showing the physical evidence of the cation doping effect and charge mobility of reduced graphene oxide and cation- r interacting reduced …
FIG. 9. BEST MODE OF THE INVENTION [00052] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the …
FIG. 10 is a graph showing the results of measurement of viscosity of high- concentration graphene oxide prepared by the process of
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A method of manufacturing a cation-reactive reduced graphene oxide, comprising the steps of: 1) synthesizing powdered graphite oxide flakes from powdered graphite flakes; 2) dispersing the graphite oxide flakes into an alkaline solution and stripping the graphite oxide flakes to form graphene oxide dispersed solution, said alkaline solution being selected from a group consisting of an aqueous sodium hydroxide (Na O H), an aqueous potassium hydroxide (KOH), an aqueous ammonium hydroxide (NH 4 O H), an aqueous lithium hydroxide (Li O H), and an aqueous calcium hydroxide (C a(OH) 2); 3) performing reaction of the graphene oxide dispersed solution at 1 0C-200 °C for 1 m in ~ 10 hr to remove a local oxygen functional group from an sp Z region of the graphene oxide and cause interaction of a cation and a ur -structure in an sp Z region of the graphene oxide to form a cation-reactive graphene oxide dispersed solution; 4) reducing said cation-reactive graphene oxide to prepare cation-reactive reduced graphene oxide by using reductant, said reductant being at least one of sodium hydroxide (Na O H), potassium hydroxide (KOH), ammonium hydroxide (NH 4 O H), sodium tetrahydroborate (NaBH 4), hydrazine (N 2 H 4), hydroionic acid, ascorbic acid, and vitamin C. Currently amended
The method of claim 1, wherein, in step 1), the graphite oxide flakes are formed by acid-treating powdered graphite flakes and then washing the acid- treated graphite flakes with an aqueous solution to remove impurities therefrom. Original
(Previously Amended) The method of claim 1, wherein the alkaline solution has a pH of 8 or more. Currently amended
(Previously Amended) The method of claim 1, further comprising a step for freeze drying the cation-reactive graphene oxide dispersed solution formed in step 3) into cation-reactive graphene oxide powder. Currently amended
5-6. (Previously Canceled) Canceled
Canceled
8-9. (Previously Canceled) Canceled
Canceled
(Previously Canceled) Canceled
(Previously Canceled) Canceled
Canceled
16-18. (Previously Canceled) Canceled
Canceled
19-21. Canceled
Canceled
(Previously Canceled) Canceled
Canceled
Materials described outside the worked examples.
graphite oxide flakes (powdered)
graphite flakes (powdered)
aqueous sodium hydroxide
NaOH
aqueous potassium hydroxide
KOH
aqueous ammonium hydroxide
NH₄OH
aqueous lithium hydroxide
LiOH
aqueous calcium hydroxide
Ca(OH)2
cation-reactive graphene oxide
cation-reactive reduced graphene oxide
sodium tetrahydroborate
NaBH₄
hydrazine
N₂H₄
ascorbic acid/vitamin C
graphite oxide flakes (acid-treated, washed)
fuming nitric acid
HNO₃
sulfuric acid
H₂SO₄
cation-reactive graphene oxide powder (freeze-dried)
graphene oxide dispersed solution
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 2 is a graph showing the results of comparing the dispersity of cation- r interacting reduced graphene oxide with that of reduced graphene oxide depending …
FIG. 2 is a graph showing the results of comparing the dispersity of cation- r interacting reduced graphene oxide with that of reduced graphene oxide depending …
FIG. 3 is a graph showing the result of formation of cation- r interaction, physical evidence and comparative example of graphene oxide depending on 13C NMR …
FIG. 4 presents graphs showing the changes in oxidation groups of graphene oxide and reduced graphene oxide and the comparative example thereof depending on …
FIG. 5 is a photograph showing the SEM and AFM images of the C IRGO of the present invention, wherein the SEM and AFM images of the C IRGO of Example 1 were …
FIG. 5 is a photograph showing the SEM and AFM images of the C IRGO of the present invention, wherein the SEM and AFM images of the C IRGO of Example 1 were …
FIG. 6 presents graphs showing the results of cation- r interaction using the resonance Raman spectrum measurement according to an embodiment of the present …
FIG. 7 is a schematic view showing a field-effect transistor of cation- r interacting reduced graphene oxide according to the present invention. This field-effect …
FIG. 8 presents graphs showing the physical evidence of the cation doping effect and charge mobility of reduced graphene oxide and cation- r interacting reduced …
FIG. 10 is a graph showing the results of measurement of viscosity of high- concentration graphene oxide prepared by the process of