Patent
US 11,090,585Separation process for laminar materials, such as graphene
Paul LADISLAUS
US
Copyright © 2026 Matter42. All rights reserved.
Patent
Atlas literature
Patent
US 11,090,585Patent drawings and their descriptions. Click a drawing to enlarge it.
Figure 1 shows a section through a typical disc stack centrifuge as used in the present invention.
Figure 2 shows a section through a typical disc stack centrifuge with the solids discharge gap open.
Figure 3 shows a chart of particle size distribution of a graphene dispersion produced by the current invention.
Figure 4 shows a chart of particles size distribution of a b o ron nitride dispersion as produced by the current invention.
Figure 5 sh ows the Raman spectra of a sampled of graphene produced by the current invention.
Figure 6 shows a chart of the particle size distribution of a molybdenum disulphide suspension after the use of the method of the present invention.
Figure 7 shows a chart of particle size distribution of a graphene dispersion produced by the present invention compared with a dispersion produced by an alternative process.
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 continuously separating a solid suspension containing submicron thickness laminar solid particles into a submicron thickness particle fraction suspension and a residual particle fraction suspension, the method comprising the steps of: providing a continuous centrifuge apparatus; providing the solid suspension [[of]]containin g the submicron thickness l aminar solid particles; separating the solid suspension in the continuous centrifu g e apparatus; wherein the solid suspension comprises the submicron thickness laminar solid particles in a liquid continuous phase; wherein the continuous centrifuge apparatus is a disc stack centrifuge; and wherein the submicron thickness laminar solid particles comprise particles of a material having a crystalline structure comprising atomically thin layers, which have been partially delaminated into atomically thin nano-platelets. Currently amended
The method of claim 1, wherein the submicron thickness laminar solid particles comprise particles of partially delaminated graphite, hexagonal boron nitride, molybdenum disulphide, tungsten diselenide or other transition metal dichalcogenides. Currently amended
The method of claim 1, wherein the submicron thickness laminar solid particles comprise particles of partially delaminated graphite or hexagonal boron nitride. Currently amended
The method of claim 1, wherein the submicron thickness laminar solid particles comprise particles of partially delaminated molybdenum disulphide, molybdenum diselenide, molybdenum ditelluride, tungsten disulphide and tungsten diselenide. Currently amended
The method of claim 1, wherein the submicron thickness laminar solid particles are in the particle size range of 1 to 100 nm. Currently amended
The method of claim 1, in which the solid suspension comprises [[in]] water [[as]]i n the liquid continuous phase. Currently amended
-3.. Canceled
Canceled
A system for the continuous separation of delaminated submicron thickness particles from a suspension of laminar particles, the system comprising: a continuous centrifuge apparatus; wherein the suspension of laminar particles comprises a solid suspension comprising submicron thickness solid particles in a liquid continuous phase; wherein the continuous centrifuge apparatus is a disc stack centrifuge; and wherein the submicron thickness solid particles comprise particles of a material having a crystalline structure comprising atomically thin layers, which have been partially delaminated into atomically thin nano-platelets; the system being configured to continuously feed the solid suspension to the continuous centrifuge apparatus which separates the solid suspension into a suspension of submicron thickness laminar particles and a solid suspension residue. Currently amended
30 1 2. The system of claim 9, wherein the suspension is a suspension of partially delaminated graphite, hexagonal boron nitride, molybdenum disulphide, molybdenum diselenide, molybdenum ditelluride, tungsten disulphide and tungsten diselenide. Currently amended
The system of claim 9, wherein the submicron thickness solid particles comprise particles of partially delaminated graphite or hexagonal boron nitride. Currently amended
The system of claim 9, wherein the submicron thickness solid particles comprise particles of partially delaminated molybdenum disulphide, tungsten diselenide or other transition metal dichalcogenides. Currently amended
The system of claim 9, in which the suspension of laminar particles is a solid suspension in water as the continuous phase. Currently amended
- 11.. Canceled
Canceled
Layer stacks claimed or described, ordered top of device to substrate.
disc stack centrifuge separation system
No layer stack recorded.
Materials described outside the worked examples.
submicron thickness laminar solid particles
atomically thin nano-platelets
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
Figure 5 sh ows the Raman spectra of a sampled of graphene produced by the current invention.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Temperature | 5–50 °C | — |
Temperature |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 11,090,585Patent drawings and their descriptions. Click a drawing to enlarge it.
Figure 1 shows a section through a typical disc stack centrifuge as used in the present invention.
Figure 2 shows a section through a typical disc stack centrifuge with the solids discharge gap open.
Figure 3 shows a chart of particle size distribution of a graphene dispersion produced by the current invention.
Figure 4 shows a chart of particles size distribution of a b o ron nitride dispersion as produced by the current invention.
Figure 5 sh ows the Raman spectra of a sampled of graphene produced by the current invention.
Figure 6 shows a chart of the particle size distribution of a molybdenum disulphide suspension after the use of the method of the present invention.
Figure 7 shows a chart of particle size distribution of a graphene dispersion produced by the present invention compared with a dispersion produced by an alternative process.
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 continuously separating a solid suspension containing submicron thickness laminar solid particles into a submicron thickness particle fraction suspension and a residual particle fraction suspension, the method comprising the steps of: providing a continuous centrifuge apparatus; providing the solid suspension [[of]]containin g the submicron thickness l aminar solid particles; separating the solid suspension in the continuous centrifu g e apparatus; wherein the solid suspension comprises the submicron thickness laminar solid particles in a liquid continuous phase; wherein the continuous centrifuge apparatus is a disc stack centrifuge; and wherein the submicron thickness laminar solid particles comprise particles of a material having a crystalline structure comprising atomically thin layers, which have been partially delaminated into atomically thin nano-platelets. Currently amended
The method of claim 1, wherein the submicron thickness laminar solid particles comprise particles of partially delaminated graphite, hexagonal boron nitride, molybdenum disulphide, tungsten diselenide or other transition metal dichalcogenides. Currently amended
The method of claim 1, wherein the submicron thickness laminar solid particles comprise particles of partially delaminated graphite or hexagonal boron nitride. Currently amended
The method of claim 1, wherein the submicron thickness laminar solid particles comprise particles of partially delaminated molybdenum disulphide, molybdenum diselenide, molybdenum ditelluride, tungsten disulphide and tungsten diselenide. Currently amended
The method of claim 1, wherein the submicron thickness laminar solid particles are in the particle size range of 1 to 100 nm. Currently amended
The method of claim 1, in which the solid suspension comprises [[in]] water [[as]]i n the liquid continuous phase. Currently amended
-3.. Canceled
Canceled
A system for the continuous separation of delaminated submicron thickness particles from a suspension of laminar particles, the system comprising: a continuous centrifuge apparatus; wherein the suspension of laminar particles comprises a solid suspension comprising submicron thickness solid particles in a liquid continuous phase; wherein the continuous centrifuge apparatus is a disc stack centrifuge; and wherein the submicron thickness solid particles comprise particles of a material having a crystalline structure comprising atomically thin layers, which have been partially delaminated into atomically thin nano-platelets; the system being configured to continuously feed the solid suspension to the continuous centrifuge apparatus which separates the solid suspension into a suspension of submicron thickness laminar particles and a solid suspension residue. Currently amended
30 1 2. The system of claim 9, wherein the suspension is a suspension of partially delaminated graphite, hexagonal boron nitride, molybdenum disulphide, molybdenum diselenide, molybdenum ditelluride, tungsten disulphide and tungsten diselenide. Currently amended
The system of claim 9, wherein the submicron thickness solid particles comprise particles of partially delaminated graphite or hexagonal boron nitride. Currently amended
The system of claim 9, wherein the submicron thickness solid particles comprise particles of partially delaminated molybdenum disulphide, tungsten diselenide or other transition metal dichalcogenides. Currently amended
The system of claim 9, in which the suspension of laminar particles is a solid suspension in water as the continuous phase. Currently amended
- 11.. Canceled
Canceled
Layer stacks claimed or described, ordered top of device to substrate.
disc stack centrifuge separation system
No layer stack recorded.
Materials described outside the worked examples.
submicron thickness laminar solid particles
atomically thin nano-platelets
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
Figure 5 sh ows the Raman spectra of a sampled of graphene produced by the current invention.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Temperature | 5–50 °C | — |
Temperature |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 11,090,585Patent drawings and their descriptions. Click a drawing to enlarge it.
Figure 1 shows a section through a typical disc stack centrifuge as used in the present invention.
Figure 2 shows a section through a typical disc stack centrifuge with the solids discharge gap open.
Figure 3 shows a chart of particle size distribution of a graphene dispersion produced by the current invention.
Figure 4 shows a chart of particles size distribution of a b o ron nitride dispersion as produced by the current invention.
Figure 5 sh ows the Raman spectra of a sampled of graphene produced by the current invention.
Figure 6 shows a chart of the particle size distribution of a molybdenum disulphide suspension after the use of the method of the present invention.
Figure 7 shows a chart of particle size distribution of a graphene dispersion produced by the present invention compared with a dispersion produced by an alternative process.
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 continuously separating a solid suspension containing submicron thickness laminar solid particles into a submicron thickness particle fraction suspension and a residual particle fraction suspension, the method comprising the steps of: providing a continuous centrifuge apparatus; providing the solid suspension [[of]]containin g the submicron thickness l aminar solid particles; separating the solid suspension in the continuous centrifu g e apparatus; wherein the solid suspension comprises the submicron thickness laminar solid particles in a liquid continuous phase; wherein the continuous centrifuge apparatus is a disc stack centrifuge; and wherein the submicron thickness laminar solid particles comprise particles of a material having a crystalline structure comprising atomically thin layers, which have been partially delaminated into atomically thin nano-platelets. Currently amended
The method of claim 1, wherein the submicron thickness laminar solid particles comprise particles of partially delaminated graphite, hexagonal boron nitride, molybdenum disulphide, tungsten diselenide or other transition metal dichalcogenides. Currently amended
The method of claim 1, wherein the submicron thickness laminar solid particles comprise particles of partially delaminated graphite or hexagonal boron nitride. Currently amended
The method of claim 1, wherein the submicron thickness laminar solid particles comprise particles of partially delaminated molybdenum disulphide, molybdenum diselenide, molybdenum ditelluride, tungsten disulphide and tungsten diselenide. Currently amended
The method of claim 1, wherein the submicron thickness laminar solid particles are in the particle size range of 1 to 100 nm. Currently amended
The method of claim 1, in which the solid suspension comprises [[in]] water [[as]]i n the liquid continuous phase. Currently amended
-3.. Canceled
Canceled
A system for the continuous separation of delaminated submicron thickness particles from a suspension of laminar particles, the system comprising: a continuous centrifuge apparatus; wherein the suspension of laminar particles comprises a solid suspension comprising submicron thickness solid particles in a liquid continuous phase; wherein the continuous centrifuge apparatus is a disc stack centrifuge; and wherein the submicron thickness solid particles comprise particles of a material having a crystalline structure comprising atomically thin layers, which have been partially delaminated into atomically thin nano-platelets; the system being configured to continuously feed the solid suspension to the continuous centrifuge apparatus which separates the solid suspension into a suspension of submicron thickness laminar particles and a solid suspension residue. Currently amended
30 1 2. The system of claim 9, wherein the suspension is a suspension of partially delaminated graphite, hexagonal boron nitride, molybdenum disulphide, molybdenum diselenide, molybdenum ditelluride, tungsten disulphide and tungsten diselenide. Currently amended
The system of claim 9, wherein the submicron thickness solid particles comprise particles of partially delaminated graphite or hexagonal boron nitride. Currently amended
The system of claim 9, wherein the submicron thickness solid particles comprise particles of partially delaminated molybdenum disulphide, tungsten diselenide or other transition metal dichalcogenides. Currently amended
The system of claim 9, in which the suspension of laminar particles is a solid suspension in water as the continuous phase. Currently amended
- 11.. Canceled
Canceled
Layer stacks claimed or described, ordered top of device to substrate.
disc stack centrifuge separation system
No layer stack recorded.
Materials described outside the worked examples.
submicron thickness laminar solid particles
atomically thin nano-platelets
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
Figure 5 sh ows the Raman spectra of a sampled of graphene produced by the current invention.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Temperature | 5–50 °C | — |
Temperature |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 11,090,585Patent drawings and their descriptions. Click a drawing to enlarge it.
Figure 1 shows a section through a typical disc stack centrifuge as used in the present invention.
Figure 2 shows a section through a typical disc stack centrifuge with the solids discharge gap open.
Figure 3 shows a chart of particle size distribution of a graphene dispersion produced by the current invention.
Figure 4 shows a chart of particles size distribution of a b o ron nitride dispersion as produced by the current invention.
Figure 5 sh ows the Raman spectra of a sampled of graphene produced by the current invention.
Figure 6 shows a chart of the particle size distribution of a molybdenum disulphide suspension after the use of the method of the present invention.
Figure 7 shows a chart of particle size distribution of a graphene dispersion produced by the present invention compared with a dispersion produced by an alternative process.
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 continuously separating a solid suspension containing submicron thickness laminar solid particles into a submicron thickness particle fraction suspension and a residual particle fraction suspension, the method comprising the steps of: providing a continuous centrifuge apparatus; providing the solid suspension [[of]]containin g the submicron thickness l aminar solid particles; separating the solid suspension in the continuous centrifu g e apparatus; wherein the solid suspension comprises the submicron thickness laminar solid particles in a liquid continuous phase; wherein the continuous centrifuge apparatus is a disc stack centrifuge; and wherein the submicron thickness laminar solid particles comprise particles of a material having a crystalline structure comprising atomically thin layers, which have been partially delaminated into atomically thin nano-platelets. Currently amended
The method of claim 1, wherein the submicron thickness laminar solid particles comprise particles of partially delaminated graphite, hexagonal boron nitride, molybdenum disulphide, tungsten diselenide or other transition metal dichalcogenides. Currently amended
The method of claim 1, wherein the submicron thickness laminar solid particles comprise particles of partially delaminated graphite or hexagonal boron nitride. Currently amended
The method of claim 1, wherein the submicron thickness laminar solid particles comprise particles of partially delaminated molybdenum disulphide, molybdenum diselenide, molybdenum ditelluride, tungsten disulphide and tungsten diselenide. Currently amended
The method of claim 1, wherein the submicron thickness laminar solid particles are in the particle size range of 1 to 100 nm. Currently amended
The method of claim 1, in which the solid suspension comprises [[in]] water [[as]]i n the liquid continuous phase. Currently amended
-3.. Canceled
Canceled
A system for the continuous separation of delaminated submicron thickness particles from a suspension of laminar particles, the system comprising: a continuous centrifuge apparatus; wherein the suspension of laminar particles comprises a solid suspension comprising submicron thickness solid particles in a liquid continuous phase; wherein the continuous centrifuge apparatus is a disc stack centrifuge; and wherein the submicron thickness solid particles comprise particles of a material having a crystalline structure comprising atomically thin layers, which have been partially delaminated into atomically thin nano-platelets; the system being configured to continuously feed the solid suspension to the continuous centrifuge apparatus which separates the solid suspension into a suspension of submicron thickness laminar particles and a solid suspension residue. Currently amended
30 1 2. The system of claim 9, wherein the suspension is a suspension of partially delaminated graphite, hexagonal boron nitride, molybdenum disulphide, molybdenum diselenide, molybdenum ditelluride, tungsten disulphide and tungsten diselenide. Currently amended
The system of claim 9, wherein the submicron thickness solid particles comprise particles of partially delaminated graphite or hexagonal boron nitride. Currently amended
The system of claim 9, wherein the submicron thickness solid particles comprise particles of partially delaminated molybdenum disulphide, tungsten diselenide or other transition metal dichalcogenides. Currently amended
The system of claim 9, in which the suspension of laminar particles is a solid suspension in water as the continuous phase. Currently amended
- 11.. Canceled
Canceled
Layer stacks claimed or described, ordered top of device to substrate.
disc stack centrifuge separation system
No layer stack recorded.
Materials described outside the worked examples.
submicron thickness laminar solid particles
atomically thin nano-platelets
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
Figure 5 sh ows the Raman spectra of a sampled of graphene produced by the current invention.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Temperature | 5–50 °C | — |
Temperature |
Related documents with shared materials, methods, properties, or citations.
partially delaminated graphite
hexagonal boron nitride
h-BN
molybdenum disulphide
MoS₂
tungsten diselenide
WSe₂
transition metal dichalcogenides
molybdenum diselenide
MoSe₂
molybdenum ditelluride
MoTe₂
tungsten disulphide
WS₂
water
H₂O
| 20–40 °C |
| — |
Thickness | ≤ 1 nm | — |
Duration | ≥ 2 hours | — |
Thickness | 1–100 nm | — |
Thickness | 0.01–2 cm | — |
Thickness | 0.02–1 cm | — |
Thickness | 1–20 mm | — |
Thickness | 5–10 mm | — |
partially delaminated graphite
hexagonal boron nitride
h-BN
molybdenum disulphide
MoS₂
tungsten diselenide
WSe₂
transition metal dichalcogenides
molybdenum diselenide
MoSe₂
molybdenum ditelluride
MoTe₂
tungsten disulphide
WS₂
water
H₂O
| 20–40 °C |
| — |
Thickness | ≤ 1 nm | — |
Duration | ≥ 2 hours | — |
Thickness | 1–100 nm | — |
Thickness | 0.01–2 cm | — |
Thickness | 0.02–1 cm | — |
Thickness | 1–20 mm | — |
Thickness | 5–10 mm | — |
partially delaminated graphite
hexagonal boron nitride
h-BN
molybdenum disulphide
MoS₂
tungsten diselenide
WSe₂
transition metal dichalcogenides
molybdenum diselenide
MoSe₂
molybdenum ditelluride
MoTe₂
tungsten disulphide
WS₂
water
H₂O
| 20–40 °C |
| — |
Thickness | ≤ 1 nm | — |
Duration | ≥ 2 hours | — |
Thickness | 1–100 nm | — |
Thickness | 0.01–2 cm | — |
Thickness | 0.02–1 cm | — |
Thickness | 1–20 mm | — |
Thickness | 5–10 mm | — |
partially delaminated graphite
hexagonal boron nitride
h-BN
molybdenum disulphide
MoS₂
tungsten diselenide
WSe₂
transition metal dichalcogenides
molybdenum diselenide
MoSe₂
molybdenum ditelluride
MoTe₂
tungsten disulphide
WS₂
water
H₂O
| 20–40 °C |
| — |
Thickness | ≤ 1 nm | — |
Duration | ≥ 2 hours | — |
Thickness | 1–100 nm | — |
Thickness | 0.01–2 cm | — |
Thickness | 0.02–1 cm | — |
Thickness | 1–20 mm | — |
Thickness | 5–10 mm | — |