Patent
US 9,162,895METHOD AND APPARATUS FOR MANUFACTURING GRAPHENE POWDER AND GRAPHENE POWDER MANUFACTURED USING THE SAME
Sungguk LEE, Dongwook LEE, Byunghwa SEO, Nami BYUN
US
Copyright © 2026 Matter42. All rights reserved.
Patent
Atlas literature
Patent
US 9,162,895Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 is a flowchart illustrating a process of manufacturing a graphene powder; [0005]
FIG. 2 is a schematic diagram illustrating a method of manufacturing a graphene powder; 4 OPP-AZ-20 1 2-0082-US-00 [0 006]
FIG. 3 is a schematic diagram illustrating aggregating graphene particles and separating the graphene particles from a solvent; [0007]
FIG. 4 is a schematic diagram illustrating separating graphene particles from a solvent; [0008]
FIG. 5 is a schematic diagram illustrating loosening aggregation of graphene particles; [0009]
FIG. 6 shows 1,000-fold magnification photographs of graphene powders prepared by conventional methods; [0010]
FIG. 7 shows 50,000-fold magnification photographs of graphene powders prepared by conventional methods; [0011]
FIG. 8 shows 1,000-fold magnification photographs of a graphene powder prepared according to the present invention; and [0012]
FIG. 9 shows 50,000-fold magnification photographs of a graphene powder prepared according to the present invention.
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 for manufacturing a graphene powder, the method comprising: preparing a graphene solution in which graphene particles are dispersed in a solvent; aggregating the graphene particles by inducing aggregation u sing -an- with a first agitator; separating the aggregated graphene particles from the solvent by -u singwith a filter including a mesh screen; a nd disa greg ating the graphene particles with a second agitator such that the induced aggregation of the gra p hene particles is loosened after the separatin g of the a ggreg ated gr aph ene particles from the solvent; and drying the graphene particles. currently amended
The method according to claim 1, wherein the first agitator comprises a first vessel comprising an inlet through which the graphene solution in which the graphene particles are dispersed in the solvent is injected and an outlet. currently amended
The method according to claim 1, wherein a pore size of the mesh screen is in a range of 1 to 1,000,um
The method according to claim 1, wherein the drying of the graphene particles is performed using at least one method selected from the group consisting of freeze drying, thermal drying, and vacuum drying. BIRCH, STEWART, KOLASCH & BIRCH, LLP JTE/CJM/smt SVG 13747764.05-08-2015.I₉G₅DXO₅PXXIFW3.CLM16391857.1.287.165.2239.252.svg 0.29 6.507 Graph Black and white
The method according to claim 1, further comprising cleaning the aggregated graphene particles after the separating of the aggregated graphene particles from the solvent.
The method according to claim 1, wherein the preparing of the graphene solution comprises: reducing a graphene oxide using a reducing agent; and dispersing the reduced graphene in a solvent.
The method according to claim 1, wherein the aggregating of the graphene particles and the separating of the aggregated graphene particles from the solvent are consecutively performed. 13-20.
The method according to claim 1, further comprising controlling a degree of aggregation of the graphene particles by adjusting a stirring time of the first agitator.
The method according to claim 1, further comprising a cleaning process of the graphene particles.
The method according to claim 1, wherein aggregating the graphene particles and separating the aggregate of the graphene particles from the solvent are consecutively conducted.
The method according to claim 1, wherein the first agitator rotates, and BIRCH, STEWART, KOLASCH & BIRCH, LLP JTE/CJM/smt Application No.: 13/747,764 Docket No.: 0465-36 10 PUS 1 Reply to Office Action of Page 4 of 7 wherein a speed of rotation of the first agitator is in a range of about 1,000 rpm to about 90,000 rpm.
The method according to claim 1, wherein the second agitator has a blade. BIRCH, STEWART, KOLASCH & BIRCH, LLP JT E/CJM/smt
canceled
canceled
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canceled
canceled
canceled
canceled
canceled
canceled
canceled
canceled
Materials described outside the worked examples.
graphene particles
solvent
Additional fabrication and treatment steps described in the patent.
Patent
Atlas literature
Patent
US 9,162,895Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 is a flowchart illustrating a process of manufacturing a graphene powder; [0005]
FIG. 2 is a schematic diagram illustrating a method of manufacturing a graphene powder; 4 OPP-AZ-20 1 2-0082-US-00 [0 006]
FIG. 3 is a schematic diagram illustrating aggregating graphene particles and separating the graphene particles from a solvent; [0007]
FIG. 4 is a schematic diagram illustrating separating graphene particles from a solvent; [0008]
FIG. 5 is a schematic diagram illustrating loosening aggregation of graphene particles; [0009]
FIG. 6 shows 1,000-fold magnification photographs of graphene powders prepared by conventional methods; [0010]
FIG. 7 shows 50,000-fold magnification photographs of graphene powders prepared by conventional methods; [0011]
FIG. 8 shows 1,000-fold magnification photographs of a graphene powder prepared according to the present invention; and [0012]
FIG. 9 shows 50,000-fold magnification photographs of a graphene powder prepared according to the present invention.
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 for manufacturing a graphene powder, the method comprising: preparing a graphene solution in which graphene particles are dispersed in a solvent; aggregating the graphene particles by inducing aggregation u sing -an- with a first agitator; separating the aggregated graphene particles from the solvent by -u singwith a filter including a mesh screen; a nd disa greg ating the graphene particles with a second agitator such that the induced aggregation of the gra p hene particles is loosened after the separatin g of the a ggreg ated gr aph ene particles from the solvent; and drying the graphene particles. currently amended
The method according to claim 1, wherein the first agitator comprises a first vessel comprising an inlet through which the graphene solution in which the graphene particles are dispersed in the solvent is injected and an outlet. currently amended
The method according to claim 1, wherein a pore size of the mesh screen is in a range of 1 to 1,000,um
The method according to claim 1, wherein the drying of the graphene particles is performed using at least one method selected from the group consisting of freeze drying, thermal drying, and vacuum drying. BIRCH, STEWART, KOLASCH & BIRCH, LLP JTE/CJM/smt SVG 13747764.05-08-2015.I₉G₅DXO₅PXXIFW3.CLM16391857.1.287.165.2239.252.svg 0.29 6.507 Graph Black and white
The method according to claim 1, further comprising cleaning the aggregated graphene particles after the separating of the aggregated graphene particles from the solvent.
The method according to claim 1, wherein the preparing of the graphene solution comprises: reducing a graphene oxide using a reducing agent; and dispersing the reduced graphene in a solvent.
The method according to claim 1, wherein the aggregating of the graphene particles and the separating of the aggregated graphene particles from the solvent are consecutively performed. 13-20.
The method according to claim 1, further comprising controlling a degree of aggregation of the graphene particles by adjusting a stirring time of the first agitator.
The method according to claim 1, further comprising a cleaning process of the graphene particles.
The method according to claim 1, wherein aggregating the graphene particles and separating the aggregate of the graphene particles from the solvent are consecutively conducted.
The method according to claim 1, wherein the first agitator rotates, and BIRCH, STEWART, KOLASCH & BIRCH, LLP JTE/CJM/smt Application No.: 13/747,764 Docket No.: 0465-36 10 PUS 1 Reply to Office Action of Page 4 of 7 wherein a speed of rotation of the first agitator is in a range of about 1,000 rpm to about 90,000 rpm.
The method according to claim 1, wherein the second agitator has a blade. BIRCH, STEWART, KOLASCH & BIRCH, LLP JT E/CJM/smt
canceled
canceled
canceled
canceled
canceled
canceled
canceled
canceled
canceled
canceled
canceled
canceled
Materials described outside the worked examples.
graphene particles
solvent
Additional fabrication and treatment steps described in the patent.
Patent
Atlas literature
Patent
US 9,162,895Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 is a flowchart illustrating a process of manufacturing a graphene powder; [0005]
FIG. 2 is a schematic diagram illustrating a method of manufacturing a graphene powder; 4 OPP-AZ-20 1 2-0082-US-00 [0 006]
FIG. 3 is a schematic diagram illustrating aggregating graphene particles and separating the graphene particles from a solvent; [0007]
FIG. 4 is a schematic diagram illustrating separating graphene particles from a solvent; [0008]
FIG. 5 is a schematic diagram illustrating loosening aggregation of graphene particles; [0009]
FIG. 6 shows 1,000-fold magnification photographs of graphene powders prepared by conventional methods; [0010]
FIG. 7 shows 50,000-fold magnification photographs of graphene powders prepared by conventional methods; [0011]
FIG. 8 shows 1,000-fold magnification photographs of a graphene powder prepared according to the present invention; and [0012]
FIG. 9 shows 50,000-fold magnification photographs of a graphene powder prepared according to the present invention.
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 for manufacturing a graphene powder, the method comprising: preparing a graphene solution in which graphene particles are dispersed in a solvent; aggregating the graphene particles by inducing aggregation u sing -an- with a first agitator; separating the aggregated graphene particles from the solvent by -u singwith a filter including a mesh screen; a nd disa greg ating the graphene particles with a second agitator such that the induced aggregation of the gra p hene particles is loosened after the separatin g of the a ggreg ated gr aph ene particles from the solvent; and drying the graphene particles. currently amended
The method according to claim 1, wherein the first agitator comprises a first vessel comprising an inlet through which the graphene solution in which the graphene particles are dispersed in the solvent is injected and an outlet. currently amended
The method according to claim 1, wherein a pore size of the mesh screen is in a range of 1 to 1,000,um
The method according to claim 1, wherein the drying of the graphene particles is performed using at least one method selected from the group consisting of freeze drying, thermal drying, and vacuum drying. BIRCH, STEWART, KOLASCH & BIRCH, LLP JTE/CJM/smt SVG 13747764.05-08-2015.I₉G₅DXO₅PXXIFW3.CLM16391857.1.287.165.2239.252.svg 0.29 6.507 Graph Black and white
The method according to claim 1, further comprising cleaning the aggregated graphene particles after the separating of the aggregated graphene particles from the solvent.
The method according to claim 1, wherein the preparing of the graphene solution comprises: reducing a graphene oxide using a reducing agent; and dispersing the reduced graphene in a solvent.
The method according to claim 1, wherein the aggregating of the graphene particles and the separating of the aggregated graphene particles from the solvent are consecutively performed. 13-20.
The method according to claim 1, further comprising controlling a degree of aggregation of the graphene particles by adjusting a stirring time of the first agitator.
The method according to claim 1, further comprising a cleaning process of the graphene particles.
The method according to claim 1, wherein aggregating the graphene particles and separating the aggregate of the graphene particles from the solvent are consecutively conducted.
The method according to claim 1, wherein the first agitator rotates, and BIRCH, STEWART, KOLASCH & BIRCH, LLP JTE/CJM/smt Application No.: 13/747,764 Docket No.: 0465-36 10 PUS 1 Reply to Office Action of Page 4 of 7 wherein a speed of rotation of the first agitator is in a range of about 1,000 rpm to about 90,000 rpm.
The method according to claim 1, wherein the second agitator has a blade. BIRCH, STEWART, KOLASCH & BIRCH, LLP JT E/CJM/smt
canceled
canceled
canceled
canceled
canceled
canceled
canceled
canceled
canceled
canceled
canceled
canceled
Materials described outside the worked examples.
graphene particles
solvent
Additional fabrication and treatment steps described in the patent.
Patent
Atlas literature
Patent
US 9,162,895Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 is a flowchart illustrating a process of manufacturing a graphene powder; [0005]
FIG. 2 is a schematic diagram illustrating a method of manufacturing a graphene powder; 4 OPP-AZ-20 1 2-0082-US-00 [0 006]
FIG. 3 is a schematic diagram illustrating aggregating graphene particles and separating the graphene particles from a solvent; [0007]
FIG. 4 is a schematic diagram illustrating separating graphene particles from a solvent; [0008]
FIG. 5 is a schematic diagram illustrating loosening aggregation of graphene particles; [0009]
FIG. 6 shows 1,000-fold magnification photographs of graphene powders prepared by conventional methods; [0010]
FIG. 7 shows 50,000-fold magnification photographs of graphene powders prepared by conventional methods; [0011]
FIG. 8 shows 1,000-fold magnification photographs of a graphene powder prepared according to the present invention; and [0012]
FIG. 9 shows 50,000-fold magnification photographs of a graphene powder prepared according to the present invention.
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 for manufacturing a graphene powder, the method comprising: preparing a graphene solution in which graphene particles are dispersed in a solvent; aggregating the graphene particles by inducing aggregation u sing -an- with a first agitator; separating the aggregated graphene particles from the solvent by -u singwith a filter including a mesh screen; a nd disa greg ating the graphene particles with a second agitator such that the induced aggregation of the gra p hene particles is loosened after the separatin g of the a ggreg ated gr aph ene particles from the solvent; and drying the graphene particles. currently amended
The method according to claim 1, wherein the first agitator comprises a first vessel comprising an inlet through which the graphene solution in which the graphene particles are dispersed in the solvent is injected and an outlet. currently amended
The method according to claim 1, wherein a pore size of the mesh screen is in a range of 1 to 1,000,um
The method according to claim 1, wherein the drying of the graphene particles is performed using at least one method selected from the group consisting of freeze drying, thermal drying, and vacuum drying. BIRCH, STEWART, KOLASCH & BIRCH, LLP JTE/CJM/smt SVG 13747764.05-08-2015.I₉G₅DXO₅PXXIFW3.CLM16391857.1.287.165.2239.252.svg 0.29 6.507 Graph Black and white
The method according to claim 1, further comprising cleaning the aggregated graphene particles after the separating of the aggregated graphene particles from the solvent.
The method according to claim 1, wherein the preparing of the graphene solution comprises: reducing a graphene oxide using a reducing agent; and dispersing the reduced graphene in a solvent.
The method according to claim 1, wherein the aggregating of the graphene particles and the separating of the aggregated graphene particles from the solvent are consecutively performed. 13-20.
The method according to claim 1, further comprising controlling a degree of aggregation of the graphene particles by adjusting a stirring time of the first agitator.
The method according to claim 1, further comprising a cleaning process of the graphene particles.
The method according to claim 1, wherein aggregating the graphene particles and separating the aggregate of the graphene particles from the solvent are consecutively conducted.
The method according to claim 1, wherein the first agitator rotates, and BIRCH, STEWART, KOLASCH & BIRCH, LLP JTE/CJM/smt Application No.: 13/747,764 Docket No.: 0465-36 10 PUS 1 Reply to Office Action of Page 4 of 7 wherein a speed of rotation of the first agitator is in a range of about 1,000 rpm to about 90,000 rpm.
The method according to claim 1, wherein the second agitator has a blade. BIRCH, STEWART, KOLASCH & BIRCH, LLP JT E/CJM/smt
canceled
canceled
canceled
canceled
canceled
canceled
canceled
canceled
canceled
canceled
canceled
canceled
Materials described outside the worked examples.
graphene particles
solvent
Additional fabrication and treatment steps described in the patent.
graphene oxide
reducing agent
graphene powder
water
H₂O
graphite
graphene oxide
reducing agent
graphene powder
water
H₂O
graphite
graphene oxide
reducing agent
graphene powder
water
H₂O
graphite
graphene oxide
reducing agent
graphene powder
water
H₂O
graphite