Patent
US 10,875,986GRAPHENE FIBER FOR AEROSPACE COMPOSITES
Keith Daniel Humfeld
US
Copyright © 2026 Matter42. All rights reserved.
Patent
Atlas literature
Patent
US 10,875,986Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 is an illustration of a perspective view of an exemplary aircraft 10 that may incorporate a composite structure 26 comprising a composite material …
FIG. 2 is an illustration of a typical composite material comprising carbon reinforcement fibers and a matrix material. [00015]
FIGS. 3-4 illustrate two exemplary embodiments of graphene fibers 34A, 34B, respectively, wherein a graphene film 35 is rolled at a slight angle A in an …
FIG. 4 is an illustration of another embodiment of a graphene fiber made by twisting a graphene sheet and exemplary equipment for producing a graphene fiber by …
FIG. 5 is a blown-up illustration of a roll 43 of functionalized graphene film 35 wound on a spool 42 having added amine groups 50 in a functionalized area 52 …
FIG. 6 is an illustration of exemplary equipment for producing a graphene film with amine group functionalization. [00019]
FIG. 7 is an illustration of a section of a graphene film that is functionalized with a hole. [00020]
FIG. 8. The method 100 comprises step 102 of preparing a graphene film 35 optionally having amine groups 50 formed on an outer surface 48 of the graphene film …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
(Previously amended) A graphene fiber comprising a single graphene film having a width in the range of about 50 microns to about 500 microns from a first edge to a second edge, the graphene film formed into an elongated fiber-like shape having a rolled spiral orientation with a diameter of about 1 to about 7 microns, the graphene fiber having amine groups bound to an outer surface of the graphene film only in a functionalized area on the outer surface that extends a length of the graphene film and about 10 microns in from the first edge of the graphene film and epoxide groups formed on the first edge of the graphene film, the amine groups in the functionalized area on the outer surface of the graphene film remaining exposed when the graphene film is in the rolled spiral orientation. Currently amended
(Previously amended) The graphene fiber of claim 1, wherein the graphene film has a linear density of epoxide groups formed on the first edge of about 7,000 to about 700,000 groups per millimeter. Currently amended
(Previously amended) The graphene fiber of claim 1, wherein about 0.1 % to about 10% of carbon atoms at the first edge of the graphene film have epoxide groups bonded thereto. Currently amended
(Previously amended) The graphene fiber of claim 1, wherein the graphene fiber has a circumference of about 3 to about 22 microns. Currently amended
The graphene fiber of claim 1, wherein the graphene film further comprises at least one hole formed through the graphene film. Original
A composite material comprising the graphene fiber of claim 1 and a matrix material. Original
Canceled
Canceled
Canceled
Canceled
(Previously amended) The graphene fiber of claim 35, wherein the elongated fiber- like shape comprises the graphene film in a rolled spiral orientation comprising the graphene film rolled at an angle greater than 0.0 degrees and less than 0.6 degrees. Currently amended
Canceled
Canceled
(Withdrawn/Currently amended) A method of increasing strength of a composite material, the method comprising: forming a graphene fiber comprising a graphene film having a width in the range of about 50 microns to about 500 microns from a first edge to a second edge, the graphene fiber formed into an elongated fiber-like shape A l wILI a uiametei having amine groups ' ound to an outer surface of the graphene film only in a functionalized area on the outer surface that extends a length of the graphene film and about 10 microns in from the first edge of the graphene film and epoxide groups formed on the first edge of the graphene film, the amine group in the functionalized area on the outer surface of the graphene film remaining exposed in the fiber-like shape; combining a matrix material with a plurality of the graphene fibers to form a prepreg material; and curing the prepreg material to form the composite material. Currently amended
The method of claim 24, wherein the step of forming the graphene fiber further comprises forming at least one hole in the graphene film. Withdrawn
The method of claim 24, further comprising combining carbon fiber with the graphene fiber to form the prepreg material. Withdrawn
()
(Withdrawn/Currently amended) The method of claim, wherein the step of forming the graphene fiber further comprises forming the graphene fiber with a circumference of about 3 to about 22 microns, and a center hollow area having a diameter of less than 500 nanometers. Currently amended
(Withdrawn/Currently amended) The method of claim, wherein the step of forming the graphene fiber further comprises maintaining a tension in the graphene film at about 0.001 N per meter of film width. Currently amended
Canceled
Canceled
Canceled
A graphene fiber comprising a single graphene film having a width in the range of about microns to about 500 microns from a first edge to a second edge, the graphene film formed into an elongated fiber-like shape, the graphene film having amine groups bound to an outer surface of the graphene film only in a functionalized area on the outer surface that extends a length of the graphene film about 10 microns in from the first edge of the graphene film and remaining exposed in the elongated fiber- like shape, and epoxide groups formed only at the first edge of the graphene film. Currently amended
(Previously amended) The graphene fiber of claim 35, wherein the first edge of the graphene film that is within the functionalized area has a linear density of epoxide groups of about 7,000 to about 700,000 groups per millimeter, such that about 0.1 % to about 10% of carbon atoms at the first edge of the graphene film have epoxide groups bonded thereto, and the outer surface of the graphene film that is within the functionalized area has a surface density of amine groups of about
Layer stacks claimed or described, ordered top of device to substrate.
graphene fiber
graphene fiber reinforced composite material
Materials described outside the worked examples.
graphene film
amine groups
-NH₂
Additional fabrication and treatment steps described in the patent.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Thickness | 50–500 µm | — |
Thickness |
Patent
Atlas literature
Patent
US 10,875,986Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 is an illustration of a perspective view of an exemplary aircraft 10 that may incorporate a composite structure 26 comprising a composite material …
FIG. 2 is an illustration of a typical composite material comprising carbon reinforcement fibers and a matrix material. [00015]
FIGS. 3-4 illustrate two exemplary embodiments of graphene fibers 34A, 34B, respectively, wherein a graphene film 35 is rolled at a slight angle A in an …
FIG. 4 is an illustration of another embodiment of a graphene fiber made by twisting a graphene sheet and exemplary equipment for producing a graphene fiber by …
FIG. 5 is a blown-up illustration of a roll 43 of functionalized graphene film 35 wound on a spool 42 having added amine groups 50 in a functionalized area 52 …
FIG. 6 is an illustration of exemplary equipment for producing a graphene film with amine group functionalization. [00019]
FIG. 7 is an illustration of a section of a graphene film that is functionalized with a hole. [00020]
FIG. 8. The method 100 comprises step 102 of preparing a graphene film 35 optionally having amine groups 50 formed on an outer surface 48 of the graphene film …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
(Previously amended) A graphene fiber comprising a single graphene film having a width in the range of about 50 microns to about 500 microns from a first edge to a second edge, the graphene film formed into an elongated fiber-like shape having a rolled spiral orientation with a diameter of about 1 to about 7 microns, the graphene fiber having amine groups bound to an outer surface of the graphene film only in a functionalized area on the outer surface that extends a length of the graphene film and about 10 microns in from the first edge of the graphene film and epoxide groups formed on the first edge of the graphene film, the amine groups in the functionalized area on the outer surface of the graphene film remaining exposed when the graphene film is in the rolled spiral orientation. Currently amended
(Previously amended) The graphene fiber of claim 1, wherein the graphene film has a linear density of epoxide groups formed on the first edge of about 7,000 to about 700,000 groups per millimeter. Currently amended
(Previously amended) The graphene fiber of claim 1, wherein about 0.1 % to about 10% of carbon atoms at the first edge of the graphene film have epoxide groups bonded thereto. Currently amended
(Previously amended) The graphene fiber of claim 1, wherein the graphene fiber has a circumference of about 3 to about 22 microns. Currently amended
The graphene fiber of claim 1, wherein the graphene film further comprises at least one hole formed through the graphene film. Original
A composite material comprising the graphene fiber of claim 1 and a matrix material. Original
Canceled
Canceled
Canceled
Canceled
(Previously amended) The graphene fiber of claim 35, wherein the elongated fiber- like shape comprises the graphene film in a rolled spiral orientation comprising the graphene film rolled at an angle greater than 0.0 degrees and less than 0.6 degrees. Currently amended
Canceled
Canceled
(Withdrawn/Currently amended) A method of increasing strength of a composite material, the method comprising: forming a graphene fiber comprising a graphene film having a width in the range of about 50 microns to about 500 microns from a first edge to a second edge, the graphene fiber formed into an elongated fiber-like shape A l wILI a uiametei having amine groups ' ound to an outer surface of the graphene film only in a functionalized area on the outer surface that extends a length of the graphene film and about 10 microns in from the first edge of the graphene film and epoxide groups formed on the first edge of the graphene film, the amine group in the functionalized area on the outer surface of the graphene film remaining exposed in the fiber-like shape; combining a matrix material with a plurality of the graphene fibers to form a prepreg material; and curing the prepreg material to form the composite material. Currently amended
The method of claim 24, wherein the step of forming the graphene fiber further comprises forming at least one hole in the graphene film. Withdrawn
The method of claim 24, further comprising combining carbon fiber with the graphene fiber to form the prepreg material. Withdrawn
()
(Withdrawn/Currently amended) The method of claim, wherein the step of forming the graphene fiber further comprises forming the graphene fiber with a circumference of about 3 to about 22 microns, and a center hollow area having a diameter of less than 500 nanometers. Currently amended
(Withdrawn/Currently amended) The method of claim, wherein the step of forming the graphene fiber further comprises maintaining a tension in the graphene film at about 0.001 N per meter of film width. Currently amended
Canceled
Canceled
Canceled
A graphene fiber comprising a single graphene film having a width in the range of about microns to about 500 microns from a first edge to a second edge, the graphene film formed into an elongated fiber-like shape, the graphene film having amine groups bound to an outer surface of the graphene film only in a functionalized area on the outer surface that extends a length of the graphene film about 10 microns in from the first edge of the graphene film and remaining exposed in the elongated fiber- like shape, and epoxide groups formed only at the first edge of the graphene film. Currently amended
(Previously amended) The graphene fiber of claim 35, wherein the first edge of the graphene film that is within the functionalized area has a linear density of epoxide groups of about 7,000 to about 700,000 groups per millimeter, such that about 0.1 % to about 10% of carbon atoms at the first edge of the graphene film have epoxide groups bonded thereto, and the outer surface of the graphene film that is within the functionalized area has a surface density of amine groups of about
Layer stacks claimed or described, ordered top of device to substrate.
graphene fiber
graphene fiber reinforced composite material
Materials described outside the worked examples.
graphene film
amine groups
-NH₂
Additional fabrication and treatment steps described in the patent.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Thickness | 50–500 µm | — |
Thickness |
Patent
Atlas literature
Patent
US 10,875,986Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 is an illustration of a perspective view of an exemplary aircraft 10 that may incorporate a composite structure 26 comprising a composite material …
FIG. 2 is an illustration of a typical composite material comprising carbon reinforcement fibers and a matrix material. [00015]
FIGS. 3-4 illustrate two exemplary embodiments of graphene fibers 34A, 34B, respectively, wherein a graphene film 35 is rolled at a slight angle A in an …
FIG. 4 is an illustration of another embodiment of a graphene fiber made by twisting a graphene sheet and exemplary equipment for producing a graphene fiber by …
FIG. 5 is a blown-up illustration of a roll 43 of functionalized graphene film 35 wound on a spool 42 having added amine groups 50 in a functionalized area 52 …
FIG. 6 is an illustration of exemplary equipment for producing a graphene film with amine group functionalization. [00019]
FIG. 7 is an illustration of a section of a graphene film that is functionalized with a hole. [00020]
FIG. 8. The method 100 comprises step 102 of preparing a graphene film 35 optionally having amine groups 50 formed on an outer surface 48 of the graphene film …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
(Previously amended) A graphene fiber comprising a single graphene film having a width in the range of about 50 microns to about 500 microns from a first edge to a second edge, the graphene film formed into an elongated fiber-like shape having a rolled spiral orientation with a diameter of about 1 to about 7 microns, the graphene fiber having amine groups bound to an outer surface of the graphene film only in a functionalized area on the outer surface that extends a length of the graphene film and about 10 microns in from the first edge of the graphene film and epoxide groups formed on the first edge of the graphene film, the amine groups in the functionalized area on the outer surface of the graphene film remaining exposed when the graphene film is in the rolled spiral orientation. Currently amended
(Previously amended) The graphene fiber of claim 1, wherein the graphene film has a linear density of epoxide groups formed on the first edge of about 7,000 to about 700,000 groups per millimeter. Currently amended
(Previously amended) The graphene fiber of claim 1, wherein about 0.1 % to about 10% of carbon atoms at the first edge of the graphene film have epoxide groups bonded thereto. Currently amended
(Previously amended) The graphene fiber of claim 1, wherein the graphene fiber has a circumference of about 3 to about 22 microns. Currently amended
The graphene fiber of claim 1, wherein the graphene film further comprises at least one hole formed through the graphene film. Original
A composite material comprising the graphene fiber of claim 1 and a matrix material. Original
Canceled
Canceled
Canceled
Canceled
(Previously amended) The graphene fiber of claim 35, wherein the elongated fiber- like shape comprises the graphene film in a rolled spiral orientation comprising the graphene film rolled at an angle greater than 0.0 degrees and less than 0.6 degrees. Currently amended
Canceled
Canceled
(Withdrawn/Currently amended) A method of increasing strength of a composite material, the method comprising: forming a graphene fiber comprising a graphene film having a width in the range of about 50 microns to about 500 microns from a first edge to a second edge, the graphene fiber formed into an elongated fiber-like shape A l wILI a uiametei having amine groups ' ound to an outer surface of the graphene film only in a functionalized area on the outer surface that extends a length of the graphene film and about 10 microns in from the first edge of the graphene film and epoxide groups formed on the first edge of the graphene film, the amine group in the functionalized area on the outer surface of the graphene film remaining exposed in the fiber-like shape; combining a matrix material with a plurality of the graphene fibers to form a prepreg material; and curing the prepreg material to form the composite material. Currently amended
The method of claim 24, wherein the step of forming the graphene fiber further comprises forming at least one hole in the graphene film. Withdrawn
The method of claim 24, further comprising combining carbon fiber with the graphene fiber to form the prepreg material. Withdrawn
()
(Withdrawn/Currently amended) The method of claim, wherein the step of forming the graphene fiber further comprises forming the graphene fiber with a circumference of about 3 to about 22 microns, and a center hollow area having a diameter of less than 500 nanometers. Currently amended
(Withdrawn/Currently amended) The method of claim, wherein the step of forming the graphene fiber further comprises maintaining a tension in the graphene film at about 0.001 N per meter of film width. Currently amended
Canceled
Canceled
Canceled
A graphene fiber comprising a single graphene film having a width in the range of about microns to about 500 microns from a first edge to a second edge, the graphene film formed into an elongated fiber-like shape, the graphene film having amine groups bound to an outer surface of the graphene film only in a functionalized area on the outer surface that extends a length of the graphene film about 10 microns in from the first edge of the graphene film and remaining exposed in the elongated fiber- like shape, and epoxide groups formed only at the first edge of the graphene film. Currently amended
(Previously amended) The graphene fiber of claim 35, wherein the first edge of the graphene film that is within the functionalized area has a linear density of epoxide groups of about 7,000 to about 700,000 groups per millimeter, such that about 0.1 % to about 10% of carbon atoms at the first edge of the graphene film have epoxide groups bonded thereto, and the outer surface of the graphene film that is within the functionalized area has a surface density of amine groups of about
Layer stacks claimed or described, ordered top of device to substrate.
graphene fiber
graphene fiber reinforced composite material
Materials described outside the worked examples.
graphene film
amine groups
-NH₂
Additional fabrication and treatment steps described in the patent.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Thickness | 50–500 µm | — |
Thickness |
Patent
Atlas literature
Patent
US 10,875,986Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 is an illustration of a perspective view of an exemplary aircraft 10 that may incorporate a composite structure 26 comprising a composite material …
FIG. 2 is an illustration of a typical composite material comprising carbon reinforcement fibers and a matrix material. [00015]
FIGS. 3-4 illustrate two exemplary embodiments of graphene fibers 34A, 34B, respectively, wherein a graphene film 35 is rolled at a slight angle A in an …
FIG. 4 is an illustration of another embodiment of a graphene fiber made by twisting a graphene sheet and exemplary equipment for producing a graphene fiber by …
FIG. 5 is a blown-up illustration of a roll 43 of functionalized graphene film 35 wound on a spool 42 having added amine groups 50 in a functionalized area 52 …
FIG. 6 is an illustration of exemplary equipment for producing a graphene film with amine group functionalization. [00019]
FIG. 7 is an illustration of a section of a graphene film that is functionalized with a hole. [00020]
FIG. 8. The method 100 comprises step 102 of preparing a graphene film 35 optionally having amine groups 50 formed on an outer surface 48 of the graphene film …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
(Previously amended) A graphene fiber comprising a single graphene film having a width in the range of about 50 microns to about 500 microns from a first edge to a second edge, the graphene film formed into an elongated fiber-like shape having a rolled spiral orientation with a diameter of about 1 to about 7 microns, the graphene fiber having amine groups bound to an outer surface of the graphene film only in a functionalized area on the outer surface that extends a length of the graphene film and about 10 microns in from the first edge of the graphene film and epoxide groups formed on the first edge of the graphene film, the amine groups in the functionalized area on the outer surface of the graphene film remaining exposed when the graphene film is in the rolled spiral orientation. Currently amended
(Previously amended) The graphene fiber of claim 1, wherein the graphene film has a linear density of epoxide groups formed on the first edge of about 7,000 to about 700,000 groups per millimeter. Currently amended
(Previously amended) The graphene fiber of claim 1, wherein about 0.1 % to about 10% of carbon atoms at the first edge of the graphene film have epoxide groups bonded thereto. Currently amended
(Previously amended) The graphene fiber of claim 1, wherein the graphene fiber has a circumference of about 3 to about 22 microns. Currently amended
The graphene fiber of claim 1, wherein the graphene film further comprises at least one hole formed through the graphene film. Original
A composite material comprising the graphene fiber of claim 1 and a matrix material. Original
Canceled
Canceled
Canceled
Canceled
(Previously amended) The graphene fiber of claim 35, wherein the elongated fiber- like shape comprises the graphene film in a rolled spiral orientation comprising the graphene film rolled at an angle greater than 0.0 degrees and less than 0.6 degrees. Currently amended
Canceled
Canceled
(Withdrawn/Currently amended) A method of increasing strength of a composite material, the method comprising: forming a graphene fiber comprising a graphene film having a width in the range of about 50 microns to about 500 microns from a first edge to a second edge, the graphene fiber formed into an elongated fiber-like shape A l wILI a uiametei having amine groups ' ound to an outer surface of the graphene film only in a functionalized area on the outer surface that extends a length of the graphene film and about 10 microns in from the first edge of the graphene film and epoxide groups formed on the first edge of the graphene film, the amine group in the functionalized area on the outer surface of the graphene film remaining exposed in the fiber-like shape; combining a matrix material with a plurality of the graphene fibers to form a prepreg material; and curing the prepreg material to form the composite material. Currently amended
The method of claim 24, wherein the step of forming the graphene fiber further comprises forming at least one hole in the graphene film. Withdrawn
The method of claim 24, further comprising combining carbon fiber with the graphene fiber to form the prepreg material. Withdrawn
()
(Withdrawn/Currently amended) The method of claim, wherein the step of forming the graphene fiber further comprises forming the graphene fiber with a circumference of about 3 to about 22 microns, and a center hollow area having a diameter of less than 500 nanometers. Currently amended
(Withdrawn/Currently amended) The method of claim, wherein the step of forming the graphene fiber further comprises maintaining a tension in the graphene film at about 0.001 N per meter of film width. Currently amended
Canceled
Canceled
Canceled
A graphene fiber comprising a single graphene film having a width in the range of about microns to about 500 microns from a first edge to a second edge, the graphene film formed into an elongated fiber-like shape, the graphene film having amine groups bound to an outer surface of the graphene film only in a functionalized area on the outer surface that extends a length of the graphene film about 10 microns in from the first edge of the graphene film and remaining exposed in the elongated fiber- like shape, and epoxide groups formed only at the first edge of the graphene film. Currently amended
(Previously amended) The graphene fiber of claim 35, wherein the first edge of the graphene film that is within the functionalized area has a linear density of epoxide groups of about 7,000 to about 700,000 groups per millimeter, such that about 0.1 % to about 10% of carbon atoms at the first edge of the graphene film have epoxide groups bonded thereto, and the outer surface of the graphene film that is within the functionalized area has a surface density of amine groups of about
Layer stacks claimed or described, ordered top of device to substrate.
graphene fiber
graphene fiber reinforced composite material
Materials described outside the worked examples.
graphene film
amine groups
-NH₂
Additional fabrication and treatment steps described in the patent.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Thickness | 50–500 µm | — |
Thickness |
epoxide groups
matrix material
carbon fiber
epoxy resin
4,4'-DDS (4,4'-diaminodiphenyl sulfone)
Bisphenyl F
| 1–7 µm |
| — |
Thickness | 5–7 µm | — |
Thickness | 1–2 nm | — |
Thickness | ≤ 500 nm | — |
Thickness | 3–22 µm | — |
Thickness | 1–20 nm | — |
epoxide groups
matrix material
carbon fiber
epoxy resin
4,4'-DDS (4,4'-diaminodiphenyl sulfone)
Bisphenyl F
| 1–7 µm |
| — |
Thickness | 5–7 µm | — |
Thickness | 1–2 nm | — |
Thickness | ≤ 500 nm | — |
Thickness | 3–22 µm | — |
Thickness | 1–20 nm | — |
epoxide groups
matrix material
carbon fiber
epoxy resin
4,4'-DDS (4,4'-diaminodiphenyl sulfone)
Bisphenyl F
| 1–7 µm |
| — |
Thickness | 5–7 µm | — |
Thickness | 1–2 nm | — |
Thickness | ≤ 500 nm | — |
Thickness | 3–22 µm | — |
Thickness | 1–20 nm | — |
epoxide groups
matrix material
carbon fiber
epoxy resin
4,4'-DDS (4,4'-diaminodiphenyl sulfone)
Bisphenyl F
| 1–7 µm |
| — |
Thickness | 5–7 µm | — |
Thickness | 1–2 nm | — |
Thickness | ≤ 500 nm | — |
Thickness | 3–22 µm | — |
Thickness | 1–20 nm | — |