Patent
US 10,099,929METHOD OF PRODUCING A GRAPHENE MATERIAL
Iti Srivastava
US
Copyright © 2026 Matter42. All rights reserved.
Patent
Atlas literature
Patent
US 10,099,929Patent drawings and their descriptions. Click a drawing to enlarge it.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A meth od of producin g a g rap h ene powder comprising: he at treatin g to between 2000 de g rees C and 2600 degrees C a g ra ph itiza ble po lymer film havin g a thickness from be tw een about 10 microns to a bout 20 0 m icrons thereby fo rmin g a heat treated film havin g a tur b ostr at ic grap hi tic structure of s ta cks of are u nal igned; and shearing the heat tr eate d film along a plane substani-aly parallel to a major surfac e of the heat treated film SVG 14771293.04-30-2018.JGNQGHSJPXXIFW1.CLM.1.16.693.2014.1668.2063.svg 0.163 3.25 Chemistry Black and white SVG 14771293.04-30-2018.JGNQGHSJPXXIFW1.CLM.1.16.1944.2014.2211.2063.svg 0.163 0.89 Chemistry Black and white thereby fo rming a parti c ulate wherein said partic u lat e has a thickness less t h an about 100 nano m eters and said shearing is not ball mil l ing. SVG 14771293.04-30-2018.JGNQGHSJPXXIFW1.CLM.1.19.302.2318.334.2353.svg 0.117 0.107 Chemistry Black and white (Previously p res ented) The metho d accordin g to claim 1 wherein said b eat treating is to at lea st 2 2 00 d egr e es C, Previously presented
(Orig i nal) The me thod according t o claim 1 whe rein said gra phitizable polym er s e lect ed SVG 14771293.04-30-2018.JGNQGHSJPXXIFW1.CLM.1.23.304.2744.323.2780.svg 0.12 0.063 Chemistry Black and white om the group consisting of polyp hen yle n oxa d iazoles (P OD) poly ben zothiazole SVG 14771293.04-30-2018.JGNQGHSJPXXIFW1.CLM.1.23.1941.2746.2076.2789.svg 0.143 0.45 Chemistry Black and white po lybe n zobi sthi azole (PB₃T), polyb e nzooxazole (PBO), polyben z obisoxaz ole SVG 14771293.04-30-2018.JGNQGHSJPXXIFW1.CLM.1.24.1889.2833.2060.2876.svg 0.143 0.57 Chemistry Black and white aronatic polyimides (P I), aromatic polyan ides (PA), polyp heny lenben zoi mida zole (P BI), SVG 14771293.04-30-2018.JGNQGHSJPXXIFW1.CLM.2.3.1462.332.1956.380.svg 0.16 1.647 Chemistry Black and white SVG 14771293.04-30-2018.JGNQGHSJPXXIFW1.CLM.2.3.416.332.968.379.svg 0.157 1.84 Chemistry Black and white SVG 14771293.04-30-2018.JGNQGHSJPXXIFW1.CLM.2.1.2152.161.2224.255.svg 0.313 0.24 Chemistry Black and white p olyp h (PPBI), poly thiazol e (P len e (PP i V) or mixtures t h ereo f Original
Canceled
(Pre viously presented) The method according to cl a im 1 wherein said graphitizable polymer film is from between 101 and 100 microns thick. SVG 14771293.04-30-2018.JGNQGHSJPXXIFW1.CLM.2.6.935.634.945.668.svg 0.113 0.033 Chemistry Black and white Previously presented
T he method acc ord in g to claim 5 wherein said graphitizable polymer film is less than about 7 5 m icrons thick, Previously presented
7i. (Canceled,) Canceled
The method according to claim I wherein said particulate has a thickness less than about 25 n ano meters. Original
(Currently a men ded) The metho d according claim I wherein said shearing comp rises mechanical shearing using a centrifugal mill. Currently amended
The method according to claim 9 wherein said shearing occurs between a rotor and a fi xed ring sleeve. New
10 Th e m eth od ac c ordin g to claim I w herein said h eat treated film exhibits an (0 02) peak d -spacing from between about 3.350 0 A to about 3.4 3 SVG 14771293.04-30-2018.JGNQGHSJPXXIFW1.CLM.2.15.1465.1617.1536.1652.svg 0.117 0.237 Chemistry Black and white A. i 1. (orig inal) The meth od acco rd ing to claim I wherein said h eat t re ated fil m exhibits an (002) peak d-spacin g greater than about 3. 3500 A, 12. (Orig inal) The method according to claim I wherein said heat treated fil m exhibits a cry stal size Le from between about 50 A to about 600 A. Original
(Origin a l) The m ethod according to claim I wherein the thickness com prises no m ore than 75 nan om eters. Original
A method o f producin g a g raphene powder comprisin g; heat treating to between 2000 degrees C and 2600 deg rees C a gra ph itizable polymer film having a thickness fio m between about 10 microns to about 200 m icr on s ther eby f orming a h eat treated film havin g a turbostra tic graphitic stmeture of stacks of align ed grap hen e planes o f be tween 5grap hene lay ers to 200 gra phene layers whe r ein the stacks and SVG 14771293.04-30-2018.JGNQGHSJPXXIFW1.CLM.3.4.1769.418.2211.465.svg 0.157 1.473 Chemistry Black and white SVG 14771293.04-30-2018.JGNQGHSJPXXIFW1.CLM.3.4.693.418.1179.465.svg 0.157 1.62 Chemistry Black and white SVG 14771293.04-30-2018.JGNQGHSJPXXIFW1.CLM.3.1.2074.162.2124.255.svg 0.31 0.167 Chemistry Black and white shearing the h eat treated film along a plane parallel to a major surface of the heat treated film to lnts witintht elstacks and t stacks thereby tormn ing a particulate wherein said particulate has a thickness less than about 1000 nanometers and said shearing. is not ball m illi ng. Currently amended
16, (Previotusly presented) The method of claim 14 wherein the particulate thickness comprises no more than 250 nanometers.
21, The method according to claim 14 wherein said heat treated film exhibits a crystal size L e from between about 50 A to about 600 A. Previously presented
The method accordin g to claim 14 wherein treated film in a direction parallel to a major surface aceording to claim 20 wherein said shearing occurs said shearing includes a blade contacting the heat of the heat treated film, 25. The method between a rotor an d a fixed ring sleeve, New
Canceled
Canceled
urrently amended) T'he method according carim 14 wherein said shearing comprises mechanical SVG 14771293.04-30-2018.JGNQGHSJPXXIFW1.CLM.3.16.757.1702.1044.1751.svg 0.163 0.957 Chemistry Black and white a centrif ui gal mill. SVG 14771293.04-30-2018.JGNQGHSJPXXIFW1.CLM.3.15.389.1618.450.1661.svg 0.143 0.203 Chemistry Black and white
The method according to claim I wherein said shearin g includes a blade contacting the heat treated flmii in a direction parallel to a major surface of the heat treated film. New
Embodiments described in the patent, grouped by the materials and process steps they use.
2 materials1 process step
Thirty sheets of a polymer each about 2 mils thick were graphitized in a furnace to produce graphite sheets. The sheets were cooled and then shear-milled using a centrifugal mill into particles with an average size of about 1000 nanometers (standard deviation 0.6 microns), ranging from 75 to 2000 nanometers. Individual particles had thicknesses of 75 nm and 500 nm as measured by SEM.
Materials described outside the worked examples.
graphitizable polymer (selected group)
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
(002) peak d-spacing of heat treated film | 3.35–3.43 Angstrom | graphene powder/graphite particulate |
Crystal size Lc of heat treated film | 50–600 Angstrom |
Patent
Atlas literature
Patent
US 10,099,929Patent drawings and their descriptions. Click a drawing to enlarge it.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A meth od of producin g a g rap h ene powder comprising: he at treatin g to between 2000 de g rees C and 2600 degrees C a g ra ph itiza ble po lymer film havin g a thickness from be tw een about 10 microns to a bout 20 0 m icrons thereby fo rmin g a heat treated film havin g a tur b ostr at ic grap hi tic structure of s ta cks of are u nal igned; and shearing the heat tr eate d film along a plane substani-aly parallel to a major surfac e of the heat treated film SVG 14771293.04-30-2018.JGNQGHSJPXXIFW1.CLM.1.16.693.2014.1668.2063.svg 0.163 3.25 Chemistry Black and white SVG 14771293.04-30-2018.JGNQGHSJPXXIFW1.CLM.1.16.1944.2014.2211.2063.svg 0.163 0.89 Chemistry Black and white thereby fo rming a parti c ulate wherein said partic u lat e has a thickness less t h an about 100 nano m eters and said shearing is not ball mil l ing. SVG 14771293.04-30-2018.JGNQGHSJPXXIFW1.CLM.1.19.302.2318.334.2353.svg 0.117 0.107 Chemistry Black and white (Previously p res ented) The metho d accordin g to claim 1 wherein said b eat treating is to at lea st 2 2 00 d egr e es C, Previously presented
(Orig i nal) The me thod according t o claim 1 whe rein said gra phitizable polym er s e lect ed SVG 14771293.04-30-2018.JGNQGHSJPXXIFW1.CLM.1.23.304.2744.323.2780.svg 0.12 0.063 Chemistry Black and white om the group consisting of polyp hen yle n oxa d iazoles (P OD) poly ben zothiazole SVG 14771293.04-30-2018.JGNQGHSJPXXIFW1.CLM.1.23.1941.2746.2076.2789.svg 0.143 0.45 Chemistry Black and white po lybe n zobi sthi azole (PB₃T), polyb e nzooxazole (PBO), polyben z obisoxaz ole SVG 14771293.04-30-2018.JGNQGHSJPXXIFW1.CLM.1.24.1889.2833.2060.2876.svg 0.143 0.57 Chemistry Black and white aronatic polyimides (P I), aromatic polyan ides (PA), polyp heny lenben zoi mida zole (P BI), SVG 14771293.04-30-2018.JGNQGHSJPXXIFW1.CLM.2.3.1462.332.1956.380.svg 0.16 1.647 Chemistry Black and white SVG 14771293.04-30-2018.JGNQGHSJPXXIFW1.CLM.2.3.416.332.968.379.svg 0.157 1.84 Chemistry Black and white SVG 14771293.04-30-2018.JGNQGHSJPXXIFW1.CLM.2.1.2152.161.2224.255.svg 0.313 0.24 Chemistry Black and white p olyp h (PPBI), poly thiazol e (P len e (PP i V) or mixtures t h ereo f Original
Canceled
(Pre viously presented) The method according to cl a im 1 wherein said graphitizable polymer film is from between 101 and 100 microns thick. SVG 14771293.04-30-2018.JGNQGHSJPXXIFW1.CLM.2.6.935.634.945.668.svg 0.113 0.033 Chemistry Black and white Previously presented
T he method acc ord in g to claim 5 wherein said graphitizable polymer film is less than about 7 5 m icrons thick, Previously presented
7i. (Canceled,) Canceled
The method according to claim I wherein said particulate has a thickness less than about 25 n ano meters. Original
(Currently a men ded) The metho d according claim I wherein said shearing comp rises mechanical shearing using a centrifugal mill. Currently amended
The method according to claim 9 wherein said shearing occurs between a rotor and a fi xed ring sleeve. New
10 Th e m eth od ac c ordin g to claim I w herein said h eat treated film exhibits an (0 02) peak d -spacing from between about 3.350 0 A to about 3.4 3 SVG 14771293.04-30-2018.JGNQGHSJPXXIFW1.CLM.2.15.1465.1617.1536.1652.svg 0.117 0.237 Chemistry Black and white A. i 1. (orig inal) The meth od acco rd ing to claim I wherein said h eat t re ated fil m exhibits an (002) peak d-spacin g greater than about 3. 3500 A, 12. (Orig inal) The method according to claim I wherein said heat treated fil m exhibits a cry stal size Le from between about 50 A to about 600 A. Original
(Origin a l) The m ethod according to claim I wherein the thickness com prises no m ore than 75 nan om eters. Original
A method o f producin g a g raphene powder comprisin g; heat treating to between 2000 degrees C and 2600 deg rees C a gra ph itizable polymer film having a thickness fio m between about 10 microns to about 200 m icr on s ther eby f orming a h eat treated film havin g a turbostra tic graphitic stmeture of stacks of align ed grap hen e planes o f be tween 5grap hene lay ers to 200 gra phene layers whe r ein the stacks and SVG 14771293.04-30-2018.JGNQGHSJPXXIFW1.CLM.3.4.1769.418.2211.465.svg 0.157 1.473 Chemistry Black and white SVG 14771293.04-30-2018.JGNQGHSJPXXIFW1.CLM.3.4.693.418.1179.465.svg 0.157 1.62 Chemistry Black and white SVG 14771293.04-30-2018.JGNQGHSJPXXIFW1.CLM.3.1.2074.162.2124.255.svg 0.31 0.167 Chemistry Black and white shearing the h eat treated film along a plane parallel to a major surface of the heat treated film to lnts witintht elstacks and t stacks thereby tormn ing a particulate wherein said particulate has a thickness less than about 1000 nanometers and said shearing. is not ball m illi ng. Currently amended
16, (Previotusly presented) The method of claim 14 wherein the particulate thickness comprises no more than 250 nanometers.
21, The method according to claim 14 wherein said heat treated film exhibits a crystal size L e from between about 50 A to about 600 A. Previously presented
The method accordin g to claim 14 wherein treated film in a direction parallel to a major surface aceording to claim 20 wherein said shearing occurs said shearing includes a blade contacting the heat of the heat treated film, 25. The method between a rotor an d a fixed ring sleeve, New
Canceled
Canceled
urrently amended) T'he method according carim 14 wherein said shearing comprises mechanical SVG 14771293.04-30-2018.JGNQGHSJPXXIFW1.CLM.3.16.757.1702.1044.1751.svg 0.163 0.957 Chemistry Black and white a centrif ui gal mill. SVG 14771293.04-30-2018.JGNQGHSJPXXIFW1.CLM.3.15.389.1618.450.1661.svg 0.143 0.203 Chemistry Black and white
The method according to claim I wherein said shearin g includes a blade contacting the heat treated flmii in a direction parallel to a major surface of the heat treated film. New
Embodiments described in the patent, grouped by the materials and process steps they use.
2 materials1 process step
Thirty sheets of a polymer each about 2 mils thick were graphitized in a furnace to produce graphite sheets. The sheets were cooled and then shear-milled using a centrifugal mill into particles with an average size of about 1000 nanometers (standard deviation 0.6 microns), ranging from 75 to 2000 nanometers. Individual particles had thicknesses of 75 nm and 500 nm as measured by SEM.
Materials described outside the worked examples.
graphitizable polymer (selected group)
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
(002) peak d-spacing of heat treated film | 3.35–3.43 Angstrom | graphene powder/graphite particulate |
Crystal size Lc of heat treated film | 50–600 Angstrom |
Patent
Atlas literature
Patent
US 10,099,929Patent drawings and their descriptions. Click a drawing to enlarge it.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A meth od of producin g a g rap h ene powder comprising: he at treatin g to between 2000 de g rees C and 2600 degrees C a g ra ph itiza ble po lymer film havin g a thickness from be tw een about 10 microns to a bout 20 0 m icrons thereby fo rmin g a heat treated film havin g a tur b ostr at ic grap hi tic structure of s ta cks of are u nal igned; and shearing the heat tr eate d film along a plane substani-aly parallel to a major surfac e of the heat treated film SVG 14771293.04-30-2018.JGNQGHSJPXXIFW1.CLM.1.16.693.2014.1668.2063.svg 0.163 3.25 Chemistry Black and white SVG 14771293.04-30-2018.JGNQGHSJPXXIFW1.CLM.1.16.1944.2014.2211.2063.svg 0.163 0.89 Chemistry Black and white thereby fo rming a parti c ulate wherein said partic u lat e has a thickness less t h an about 100 nano m eters and said shearing is not ball mil l ing. SVG 14771293.04-30-2018.JGNQGHSJPXXIFW1.CLM.1.19.302.2318.334.2353.svg 0.117 0.107 Chemistry Black and white (Previously p res ented) The metho d accordin g to claim 1 wherein said b eat treating is to at lea st 2 2 00 d egr e es C, Previously presented
(Orig i nal) The me thod according t o claim 1 whe rein said gra phitizable polym er s e lect ed SVG 14771293.04-30-2018.JGNQGHSJPXXIFW1.CLM.1.23.304.2744.323.2780.svg 0.12 0.063 Chemistry Black and white om the group consisting of polyp hen yle n oxa d iazoles (P OD) poly ben zothiazole SVG 14771293.04-30-2018.JGNQGHSJPXXIFW1.CLM.1.23.1941.2746.2076.2789.svg 0.143 0.45 Chemistry Black and white po lybe n zobi sthi azole (PB₃T), polyb e nzooxazole (PBO), polyben z obisoxaz ole SVG 14771293.04-30-2018.JGNQGHSJPXXIFW1.CLM.1.24.1889.2833.2060.2876.svg 0.143 0.57 Chemistry Black and white aronatic polyimides (P I), aromatic polyan ides (PA), polyp heny lenben zoi mida zole (P BI), SVG 14771293.04-30-2018.JGNQGHSJPXXIFW1.CLM.2.3.1462.332.1956.380.svg 0.16 1.647 Chemistry Black and white SVG 14771293.04-30-2018.JGNQGHSJPXXIFW1.CLM.2.3.416.332.968.379.svg 0.157 1.84 Chemistry Black and white SVG 14771293.04-30-2018.JGNQGHSJPXXIFW1.CLM.2.1.2152.161.2224.255.svg 0.313 0.24 Chemistry Black and white p olyp h (PPBI), poly thiazol e (P len e (PP i V) or mixtures t h ereo f Original
Canceled
(Pre viously presented) The method according to cl a im 1 wherein said graphitizable polymer film is from between 101 and 100 microns thick. SVG 14771293.04-30-2018.JGNQGHSJPXXIFW1.CLM.2.6.935.634.945.668.svg 0.113 0.033 Chemistry Black and white Previously presented
T he method acc ord in g to claim 5 wherein said graphitizable polymer film is less than about 7 5 m icrons thick, Previously presented
7i. (Canceled,) Canceled
The method according to claim I wherein said particulate has a thickness less than about 25 n ano meters. Original
(Currently a men ded) The metho d according claim I wherein said shearing comp rises mechanical shearing using a centrifugal mill. Currently amended
The method according to claim 9 wherein said shearing occurs between a rotor and a fi xed ring sleeve. New
10 Th e m eth od ac c ordin g to claim I w herein said h eat treated film exhibits an (0 02) peak d -spacing from between about 3.350 0 A to about 3.4 3 SVG 14771293.04-30-2018.JGNQGHSJPXXIFW1.CLM.2.15.1465.1617.1536.1652.svg 0.117 0.237 Chemistry Black and white A. i 1. (orig inal) The meth od acco rd ing to claim I wherein said h eat t re ated fil m exhibits an (002) peak d-spacin g greater than about 3. 3500 A, 12. (Orig inal) The method according to claim I wherein said heat treated fil m exhibits a cry stal size Le from between about 50 A to about 600 A. Original
(Origin a l) The m ethod according to claim I wherein the thickness com prises no m ore than 75 nan om eters. Original
A method o f producin g a g raphene powder comprisin g; heat treating to between 2000 degrees C and 2600 deg rees C a gra ph itizable polymer film having a thickness fio m between about 10 microns to about 200 m icr on s ther eby f orming a h eat treated film havin g a turbostra tic graphitic stmeture of stacks of align ed grap hen e planes o f be tween 5grap hene lay ers to 200 gra phene layers whe r ein the stacks and SVG 14771293.04-30-2018.JGNQGHSJPXXIFW1.CLM.3.4.1769.418.2211.465.svg 0.157 1.473 Chemistry Black and white SVG 14771293.04-30-2018.JGNQGHSJPXXIFW1.CLM.3.4.693.418.1179.465.svg 0.157 1.62 Chemistry Black and white SVG 14771293.04-30-2018.JGNQGHSJPXXIFW1.CLM.3.1.2074.162.2124.255.svg 0.31 0.167 Chemistry Black and white shearing the h eat treated film along a plane parallel to a major surface of the heat treated film to lnts witintht elstacks and t stacks thereby tormn ing a particulate wherein said particulate has a thickness less than about 1000 nanometers and said shearing. is not ball m illi ng. Currently amended
16, (Previotusly presented) The method of claim 14 wherein the particulate thickness comprises no more than 250 nanometers.
21, The method according to claim 14 wherein said heat treated film exhibits a crystal size L e from between about 50 A to about 600 A. Previously presented
The method accordin g to claim 14 wherein treated film in a direction parallel to a major surface aceording to claim 20 wherein said shearing occurs said shearing includes a blade contacting the heat of the heat treated film, 25. The method between a rotor an d a fixed ring sleeve, New
Canceled
Canceled
urrently amended) T'he method according carim 14 wherein said shearing comprises mechanical SVG 14771293.04-30-2018.JGNQGHSJPXXIFW1.CLM.3.16.757.1702.1044.1751.svg 0.163 0.957 Chemistry Black and white a centrif ui gal mill. SVG 14771293.04-30-2018.JGNQGHSJPXXIFW1.CLM.3.15.389.1618.450.1661.svg 0.143 0.203 Chemistry Black and white
The method according to claim I wherein said shearin g includes a blade contacting the heat treated flmii in a direction parallel to a major surface of the heat treated film. New
Embodiments described in the patent, grouped by the materials and process steps they use.
2 materials1 process step
Thirty sheets of a polymer each about 2 mils thick were graphitized in a furnace to produce graphite sheets. The sheets were cooled and then shear-milled using a centrifugal mill into particles with an average size of about 1000 nanometers (standard deviation 0.6 microns), ranging from 75 to 2000 nanometers. Individual particles had thicknesses of 75 nm and 500 nm as measured by SEM.
Materials described outside the worked examples.
graphitizable polymer (selected group)
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
(002) peak d-spacing of heat treated film | 3.35–3.43 Angstrom | graphene powder/graphite particulate |
Crystal size Lc of heat treated film | 50–600 Angstrom |
Patent
Atlas literature
Patent
US 10,099,929Patent drawings and their descriptions. Click a drawing to enlarge it.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A meth od of producin g a g rap h ene powder comprising: he at treatin g to between 2000 de g rees C and 2600 degrees C a g ra ph itiza ble po lymer film havin g a thickness from be tw een about 10 microns to a bout 20 0 m icrons thereby fo rmin g a heat treated film havin g a tur b ostr at ic grap hi tic structure of s ta cks of are u nal igned; and shearing the heat tr eate d film along a plane substani-aly parallel to a major surfac e of the heat treated film SVG 14771293.04-30-2018.JGNQGHSJPXXIFW1.CLM.1.16.693.2014.1668.2063.svg 0.163 3.25 Chemistry Black and white SVG 14771293.04-30-2018.JGNQGHSJPXXIFW1.CLM.1.16.1944.2014.2211.2063.svg 0.163 0.89 Chemistry Black and white thereby fo rming a parti c ulate wherein said partic u lat e has a thickness less t h an about 100 nano m eters and said shearing is not ball mil l ing. SVG 14771293.04-30-2018.JGNQGHSJPXXIFW1.CLM.1.19.302.2318.334.2353.svg 0.117 0.107 Chemistry Black and white (Previously p res ented) The metho d accordin g to claim 1 wherein said b eat treating is to at lea st 2 2 00 d egr e es C, Previously presented
(Orig i nal) The me thod according t o claim 1 whe rein said gra phitizable polym er s e lect ed SVG 14771293.04-30-2018.JGNQGHSJPXXIFW1.CLM.1.23.304.2744.323.2780.svg 0.12 0.063 Chemistry Black and white om the group consisting of polyp hen yle n oxa d iazoles (P OD) poly ben zothiazole SVG 14771293.04-30-2018.JGNQGHSJPXXIFW1.CLM.1.23.1941.2746.2076.2789.svg 0.143 0.45 Chemistry Black and white po lybe n zobi sthi azole (PB₃T), polyb e nzooxazole (PBO), polyben z obisoxaz ole SVG 14771293.04-30-2018.JGNQGHSJPXXIFW1.CLM.1.24.1889.2833.2060.2876.svg 0.143 0.57 Chemistry Black and white aronatic polyimides (P I), aromatic polyan ides (PA), polyp heny lenben zoi mida zole (P BI), SVG 14771293.04-30-2018.JGNQGHSJPXXIFW1.CLM.2.3.1462.332.1956.380.svg 0.16 1.647 Chemistry Black and white SVG 14771293.04-30-2018.JGNQGHSJPXXIFW1.CLM.2.3.416.332.968.379.svg 0.157 1.84 Chemistry Black and white SVG 14771293.04-30-2018.JGNQGHSJPXXIFW1.CLM.2.1.2152.161.2224.255.svg 0.313 0.24 Chemistry Black and white p olyp h (PPBI), poly thiazol e (P len e (PP i V) or mixtures t h ereo f Original
Canceled
(Pre viously presented) The method according to cl a im 1 wherein said graphitizable polymer film is from between 101 and 100 microns thick. SVG 14771293.04-30-2018.JGNQGHSJPXXIFW1.CLM.2.6.935.634.945.668.svg 0.113 0.033 Chemistry Black and white Previously presented
T he method acc ord in g to claim 5 wherein said graphitizable polymer film is less than about 7 5 m icrons thick, Previously presented
7i. (Canceled,) Canceled
The method according to claim I wherein said particulate has a thickness less than about 25 n ano meters. Original
(Currently a men ded) The metho d according claim I wherein said shearing comp rises mechanical shearing using a centrifugal mill. Currently amended
The method according to claim 9 wherein said shearing occurs between a rotor and a fi xed ring sleeve. New
10 Th e m eth od ac c ordin g to claim I w herein said h eat treated film exhibits an (0 02) peak d -spacing from between about 3.350 0 A to about 3.4 3 SVG 14771293.04-30-2018.JGNQGHSJPXXIFW1.CLM.2.15.1465.1617.1536.1652.svg 0.117 0.237 Chemistry Black and white A. i 1. (orig inal) The meth od acco rd ing to claim I wherein said h eat t re ated fil m exhibits an (002) peak d-spacin g greater than about 3. 3500 A, 12. (Orig inal) The method according to claim I wherein said heat treated fil m exhibits a cry stal size Le from between about 50 A to about 600 A. Original
(Origin a l) The m ethod according to claim I wherein the thickness com prises no m ore than 75 nan om eters. Original
A method o f producin g a g raphene powder comprisin g; heat treating to between 2000 degrees C and 2600 deg rees C a gra ph itizable polymer film having a thickness fio m between about 10 microns to about 200 m icr on s ther eby f orming a h eat treated film havin g a turbostra tic graphitic stmeture of stacks of align ed grap hen e planes o f be tween 5grap hene lay ers to 200 gra phene layers whe r ein the stacks and SVG 14771293.04-30-2018.JGNQGHSJPXXIFW1.CLM.3.4.1769.418.2211.465.svg 0.157 1.473 Chemistry Black and white SVG 14771293.04-30-2018.JGNQGHSJPXXIFW1.CLM.3.4.693.418.1179.465.svg 0.157 1.62 Chemistry Black and white SVG 14771293.04-30-2018.JGNQGHSJPXXIFW1.CLM.3.1.2074.162.2124.255.svg 0.31 0.167 Chemistry Black and white shearing the h eat treated film along a plane parallel to a major surface of the heat treated film to lnts witintht elstacks and t stacks thereby tormn ing a particulate wherein said particulate has a thickness less than about 1000 nanometers and said shearing. is not ball m illi ng. Currently amended
16, (Previotusly presented) The method of claim 14 wherein the particulate thickness comprises no more than 250 nanometers.
21, The method according to claim 14 wherein said heat treated film exhibits a crystal size L e from between about 50 A to about 600 A. Previously presented
The method accordin g to claim 14 wherein treated film in a direction parallel to a major surface aceording to claim 20 wherein said shearing occurs said shearing includes a blade contacting the heat of the heat treated film, 25. The method between a rotor an d a fixed ring sleeve, New
Canceled
Canceled
urrently amended) T'he method according carim 14 wherein said shearing comprises mechanical SVG 14771293.04-30-2018.JGNQGHSJPXXIFW1.CLM.3.16.757.1702.1044.1751.svg 0.163 0.957 Chemistry Black and white a centrif ui gal mill. SVG 14771293.04-30-2018.JGNQGHSJPXXIFW1.CLM.3.15.389.1618.450.1661.svg 0.143 0.203 Chemistry Black and white
The method according to claim I wherein said shearin g includes a blade contacting the heat treated flmii in a direction parallel to a major surface of the heat treated film. New
Embodiments described in the patent, grouped by the materials and process steps they use.
2 materials1 process step
Thirty sheets of a polymer each about 2 mils thick were graphitized in a furnace to produce graphite sheets. The sheets were cooled and then shear-milled using a centrifugal mill into particles with an average size of about 1000 nanometers (standard deviation 0.6 microns), ranging from 75 to 2000 nanometers. Individual particles had thicknesses of 75 nm and 500 nm as measured by SEM.
Materials described outside the worked examples.
graphitizable polymer (selected group)
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
(002) peak d-spacing of heat treated film | 3.35–3.43 Angstrom | graphene powder/graphite particulate |
Crystal size Lc of heat treated film | 50–600 Angstrom |
graphene powder/graphite particulate |
Particulate thickness (SEM, example particle 1) | — | graphene powder/graphite particulate |
Particulate thickness (SEM, example particle 2) | — | graphene powder/graphite particulate |
Average particle size after centrifugal milling | — | graphene powder/graphite particulate |
Thickness | 75–2000 nm | — |
Thickness | 100–101 µm | — |
Thickness | 25–75 µm | — |
Thickness | ≤ 1 nm | — |
Thickness | ≤ 250 nm | — |
Thickness | ≥ 250 nm | — |
Thickness | 10–200 µm | — |
Thickness | ≤ 500 nm | — |
Thickness | ≥ 1 nm | — |
graphene powder/graphite particulate |
Particulate thickness (SEM, example particle 1) | — | graphene powder/graphite particulate |
Particulate thickness (SEM, example particle 2) | — | graphene powder/graphite particulate |
Average particle size after centrifugal milling | — | graphene powder/graphite particulate |
Thickness | 75–2000 nm | — |
Thickness | 100–101 µm | — |
Thickness | 25–75 µm | — |
Thickness | ≤ 1 nm | — |
Thickness | ≤ 250 nm | — |
Thickness | ≥ 250 nm | — |
Thickness | 10–200 µm | — |
Thickness | ≤ 500 nm | — |
Thickness | ≥ 1 nm | — |
graphene powder/graphite particulate |
Particulate thickness (SEM, example particle 1) | — | graphene powder/graphite particulate |
Particulate thickness (SEM, example particle 2) | — | graphene powder/graphite particulate |
Average particle size after centrifugal milling | — | graphene powder/graphite particulate |
Thickness | 75–2000 nm | — |
Thickness | 100–101 µm | — |
Thickness | 25–75 µm | — |
Thickness | ≤ 1 nm | — |
Thickness | ≤ 250 nm | — |
Thickness | ≥ 250 nm | — |
Thickness | 10–200 µm | — |
Thickness | ≤ 500 nm | — |
Thickness | ≥ 1 nm | — |
graphene powder/graphite particulate |
Particulate thickness (SEM, example particle 1) | — | graphene powder/graphite particulate |
Particulate thickness (SEM, example particle 2) | — | graphene powder/graphite particulate |
Average particle size after centrifugal milling | — | graphene powder/graphite particulate |
Thickness | 75–2000 nm | — |
Thickness | 100–101 µm | — |
Thickness | 25–75 µm | — |
Thickness | ≤ 1 nm | — |
Thickness | ≤ 250 nm | — |
Thickness | ≥ 250 nm | — |
Thickness | 10–200 µm | — |
Thickness | ≤ 500 nm | — |
Thickness | ≥ 1 nm | — |