Patents Assigned to GRAPHENE PLATFORM CORPORATION
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Patent number: 10421863Abstract: A method of producing the composite reinforcing material includes a step of kneading at least a graphite-based carbon material and a reinforcing material into a base material. The graphite-based carbon material is characterized by having a rhombohedral graphite layer (3R) and a hexagonal graphite layer (2H), wherein a Rate (3R) of the rhombohedral graphite layer (3R) and the hexagonal graphite layer (2H), based on an X-ray diffraction method, which is defined by following Equation 1 is 31% or more: Rate(3R)=P3/(P3+P4)×100??(Equation 1) wherein P3 is a peak intensity of a (101) plane of the rhombohedral graphite layer (3R) based on the X-ray diffraction method, and P4 is a peak intensity of a (101) plane of the hexagonal graphite layer (2H) based on the X-ray diffraction method.Type: GrantFiled: November 27, 2017Date of Patent: September 24, 2019Assignee: GRAPHENE PLATFORM CORPORATIONInventors: Shoji Hasegawa, Nagisa Kamiya
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Patent number: 9862833Abstract: A method of producing the composite reinforcing material includes a step of kneading at least a graphite-based carbon material and a reinforcing material into a base material. The graphite-based carbon material is characterized by having a rhombohedral graphite layer (3R) and a hexagonal graphite layer (2H), wherein a Rate (3R) of the rhombohedral graphite layer (3R) and the hexagonal graphite layer (2H), based on an X-ray diffraction method, which is defined by following Equation 1 is 31% or more: Rate (3R)=P3/(P3+P4)×100??(Equation 1) wherein P3 is a peak intensity of a (101) plane of the rhombohedral graphite layer (3R) based on the X-ray diffraction method, and P4 is a peak intensity of a (101) plane of the hexagonal graphite layer (2H) based on the X-ray diffraction method.Type: GrantFiled: March 19, 2015Date of Patent: January 9, 2018Assignee: GRAPHENE PLATFORM CORPORATIONInventors: Shoji Hasegawa, Nagisa Kamiya
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Patent number: 9862834Abstract: A method of producing the composite reinforcing material includes a step of kneading at least a graphite-based carbon material and a reinforcing material into a base material. The graphite-based carbon material is characterized by having a rhombohedral graphite layer (3R) and a hexagonal graphite layer (2H), wherein a Rate (3R) of the rhombohedral graphite layer (3R) and the hexagonal graphite layer (2H), based on an X-ray diffraction method, which is defined by following Equation 1 is 31% or more: Rate(3R)=P3/(P3+P4)×100??(Equation 1) wherein P3 is a peak intensity of a (101) plane of the rhombohedral graphite layer (3R) based on the X-ray diffraction method, and P4 is a peak intensity of a (101) plane of the hexagonal graphite layer (2H) based on the X-ray diffraction method.Type: GrantFiled: December 29, 2015Date of Patent: January 9, 2018Assignee: GRAPHENE PLATFORM CORPORATIONInventors: Shoji Hasegawa, Nagisa Kamiya
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Patent number: 9815987Abstract: A composite conductive material includes at least graphene-like exfoliated from a graphite-based graphite carbon material and a conductive material dispersed in a base material. The graphite-based carbon material has a rhombohedral graphite layer (3R) and a hexagonal graphite layer (2H), wherein a Rate (3R) of the rhombohedral graphite layer (3R) and the hexagonal graphite layer (2H), based on an X-ray diffraction method, which is defined by following Equation 1 is 31% or more: Rate(3R)=P3/(P3+P4)×100??(Equation 1) wherein P3 is a peak intensity of a (101) plane of the rhombohedral graphite layer (3R) based on the X-ray diffraction method, and P4 is a peak intensity of a (101) plane of the hexagonal graphite layer (2H) based on the X-ray diffraction method.Type: GrantFiled: March 13, 2015Date of Patent: November 14, 2017Assignee: GRAPHENE PLATFORM CORPORATIONInventors: Shoji Hasegawa, Nagisa Kamiya
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Patent number: 9752035Abstract: A composite lubricating material include at least a graphite-based carbon material and/or graphene-like graphite exfoliated from the graphite-based carbon material dispersed in a base material. The graphite-based carbon material is characterized by having a rhombohedral graphite layer (3R) and a hexagonal graphite layer (2H), wherein a Rate (3R) of the rhombohedral graphite layer (3R) and the hexagonal graphite layer (2H), based on an X-ray diffraction method, which is defined by following Equation 1 is 31% or more: Rate (3R)=P3/(P3+P4)×100 . . . Equation 1, wherein, P3 is a peak intensity of a (101) plane of the rhombohedral graphite layer (3R) based on the X-ray diffraction method, and P4 is a peak intensity of a (101) plane of the hexagonal graphite layer (2H) based on the X-ray diffraction method.Type: GrantFiled: March 23, 2015Date of Patent: September 5, 2017Assignee: GRAPHENE PLATFORM CORPORATIONInventors: Shoji Hasegawa, Nagisa Kamiya
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Patent number: 9745441Abstract: There are provided a graphene composition and a graphene molded article that exert the properties, such as the strength, due to graphene mixed therein, even with a small amount of the graphene. The graphene composition contains a compound, graphene, and a dispersant, the graphene is contained in an amount of from 0.01 to 5% by weight and contains first flakes having a longer edge of less than 1 ?m and second flakes having a longer edge of 1 ?m or more and less than 5 ?m, a number of the first flakes is 5% or more of the entire flakes in the graphene, and a total number of the first flakes and the second flakes is 90% or more of the entire flakes in the graphene.Type: GrantFiled: May 30, 2014Date of Patent: August 29, 2017Assignee: GRAPHENE PLATFORM CORPORATIONInventors: Shoji Hasegawa, Nagisa Kamiya
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Patent number: 9598593Abstract: Provided is a graphite-based carbon material useful as a graphene precursor, from which graphene is easily exfoliated when the graphite-based carbon material is useful as a precursor and from which a highly-concentrated graphene dispersion can easily be obtained. The graphite-based carbon material is a graphite-based carbon material useful as a graphene precursor wherein a Rate (3R) based on an X-ray diffraction method, which is defined by following Equation 1 is 31% or more: Rate (3R)=P3/(P3+P4)×100??Equation 1 wherein P3 is a peak intensity of a (101) plane of the rhombohedral graphite layer (3R) based on the X-ray diffraction method, and P4 is a peak intensity of a (101) plane of the hexagonal graphite layer (2H) based on the X-ray diffraction method.Type: GrantFiled: September 23, 2015Date of Patent: March 21, 2017Assignee: GRAPHENE PLATFORM CORPORATIONInventors: Shoji Hasegawa, Nagisa Kamiya
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Publication number: 20170066897Abstract: There are provided a graphene composition and a graphene molded article that exert the properties, such as the strength, due to graphene mixed therein, even with a small amount of the graphene. The graphene composition contains a compound, graphene, and a dispersant, the graphene is contained in an amount of from 0.01 to 5% by weight and contains first flakes having a longer edge of less than 1 ?m and second flakes having a longer edge of 1 ?m or more and less than 5 ?m, a number of the first flakes is 5% or more of the entire flakes in the graphene, and a total number of the first flakes and the second flakes is 90% or more of the entire flakes in the graphene.Type: ApplicationFiled: May 30, 2014Publication date: March 9, 2017Applicant: Graphene Platform CorporationInventors: Shoji Hasegawa, Nagisa Kamiya
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Patent number: 9587134Abstract: Provided is a graphite-based carbon material useful as a graphene precursor, from which graphene is easily exfoliated when the graphite-based carbon material is useful as a precursor and from which a highly-concentrated graphene dispersion can easily be obtained. The graphite-based carbon material is a graphite-based carbon material useful as a graphene precursor wherein a Rate (3R) based on an X-ray diffraction method, which is defined by following Equation 1 is 31% or more: Rate(3R)=P3/(P3+P4)×100??Equation 1 wherein P3 is a peak intensity of a (101) plane of the rhombohedral graphite layer (3R) based on the X-ray diffraction method, and P4 is a peak intensity of a (101) plane of the hexagonal graphite layer (2H) based on the X-ray diffraction method.Type: GrantFiled: December 17, 2015Date of Patent: March 7, 2017Assignee: GRAPHENE PLATFORM CORPORATIONInventors: Shoji Hasegawa, Nagisa Kamiya
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Patent number: 9552900Abstract: A composite conductive material includes at least graphene-like exfoliated from a graphite-based graphite carbon material and a conductive material dispersed in a base material. The graphite-based carbon material has a rhombohedral graphite layer (3R) and a hexagonal graphite layer (2H), wherein a Rate (3R) of the rhombohedral graphite layer (3R) and the hexagonal graphite layer (2H), based on an X-ray diffraction method, which is defined by following Equation 1 is 31% or more: Rate(3R)=P3/(P3+P4)×100??(Equation 1) wherein P3 is a peak intensity of a (101) plane of the rhombohedral graphite layer (3R) based on the X-ray diffraction method, and P4 is a peak intensity of a (101) plane of the hexagonal graphite layer (2H) based on the X-ray diffraction method.Type: GrantFiled: December 14, 2015Date of Patent: January 24, 2017Assignee: GRAPHENE PLATFORM CORPORATIONInventors: Shoji Hasegawa, Nagisa Kamiya
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Publication number: 20160280551Abstract: There are provided graphene powder that may be mass-produced with high quality, an apparatus for producing graphene powder, a method for producing graphene powder, and a product using the graphene powder. A jet flow as a high speed jet stream of a liquid or a gas is output from a jet flow output unit, and a raw material containing graphite and the jet flow thus output from the jet flow output unit are made to inflow to an input part of a chamber to cleave graphite, thereby outputting graphene powder in the form of fine particles of graphite from an output part. The graphene powder by the production method is formed simply by cleaving the raw material containing graphite with a jet flow, and thus may suffer no contamination due to the absence of contamination with other substances, and thus graphene having high purity and good quality in the form of fine particles may be obtained.Type: ApplicationFiled: December 17, 2013Publication date: September 29, 2016Applicant: Graphene Platform CorporationInventors: Shoji Hasegawa, Nagisa Kamiya
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Graphite-based carbon material useful as graphene precursor, as well as method of producing the same
Patent number: 9428393Abstract: Provided is a graphite-based carbon material useful as a graphene precursor, from which graphene is easily exfoliated when the graphite-based carbon material is useful as a precursor and from which a highly-concentrated graphene dispersion can easily be obtained. The graphite-based carbon material is a graphite-based carbon material useful as a graphene precursor wherein a Rate (3R) based on an X-ray diffraction method, which is defined by following Equation 1 is 31% or more: Rate (3R)=P3/(P3+P4)×100??Equation 1 wherein P3 is a peak intensity of a (101) plane of the rhombohedral graphite layer (3R) based on the X-ray diffraction method, and P4 is a peak intensity of a (101) plane of the hexagonal graphite layer (2H) based on the X-ray diffraction method.Type: GrantFiled: December 17, 2015Date of Patent: August 30, 2016Assignee: GRAPHENE PLATFORM CORPORATIONInventors: Shoji Hasegawa, Nagisa Kamiya -
Patent number: 9404058Abstract: A composite lubricating material including at least a graphite-based carbon material and/or graphene-like graphite exfoliated from the graphite-based carbon material dispersed in a base material. The graphite-based carbon material is characterized by having a rhombohedral graphite layer (3R) and a hexagonal graphite layer (2H), wherein a Rate (3R) of the rhombohedral graphite layer (3R) and the hexagonal graphite layer (2H), based on an X-ray diffraction method, which is defined by following Equation 1 is 31% or more: Rate (3R)=P3/(P3+P4)×100 ??Equation 1 wherein P3 is a peak intensity of a (101) plane of the rhombohedral graphite layer (3R) based on the X-ray diffraction method, and P4 is a peak intensity of a (101) plane of the hexagonal graphite layer (2H) based on the X-ray diffraction method.Type: GrantFiled: December 14, 2015Date of Patent: August 2, 2016Assignee: GRAPHENE PLATFORM CORPORATIONInventors: Shoji Hasegawa, Nagisa Kamiya