Patents Examined by Daniel C. McCracken
  • Patent number: 12012334
    Abstract: A method for removing ash from a solid carbon material: Reaction conditions are mild, and ash may be removed more effectively. The ash removing method comprises: S1) mixing an alkaline sub-molten salt medium and a solid carbonaceous material to be treated, heating so that alkali and ash in the solid carbonaceous material to be treated react in the alkaline sub-molten salt medium, and performing solid-liquid separation on a mixed slurry resulting from the reaction to obtain a first solid product and an alkali treatment solution, wherein in the alkaline sub-molten salt medium, the mass fraction of the alkali is greater than or equal to 50%; S2) using an acid solution to perform acid cleaning treatment on the first solid product, and performing solid-liquid separation again to obtain a second solid product and an acid cleaning solution.
    Type: Grant
    Filed: September 26, 2019
    Date of Patent: June 18, 2024
    Inventors: Lijun Zhao, Wenhua Li, Aiguo Chen, Fan Jin, Xiaolin Jiang, Huidong Liu, Yongfeng Xiao
  • Patent number: 12012336
    Abstract: Methods that expand the properties of laser-induced graphene (LIG) and the resulting LIG having the expanded properties. Methods of fabricating laser-induced graphene from materials, which range from natural, renewable precursors (such as cloth or paper) to high performance polymers (like Kevlar). With multiple lasing, however, highly conductive PEI-based LIG could be obtained using both multiple pass and defocus methods. The resulting laser-induced graphene can be used, inter alia, in electronic devices, as antifouling surfaces, in water treatment technology, in membranes, and in electronics on paper and food Such methods include fabrication of LIG in controlled atmospheres, such that, for example, superhydrophobic and superhydrophilic LIG surfaces can be obtained. Such methods further include fabricating laser-induced graphene by multiple lasing of carbon precursors. Such methods further include direct 3D printing of graphene materials from carbon precurors.
    Type: Grant
    Filed: November 1, 2021
    Date of Patent: June 18, 2024
    Inventors: James M. Tour, Yieu Chyan, Christopher John Arnusch, Swatantra Pratap Singh, Yilun Li, Duy X. Luong, Carter Kittrell, Ruquan Ye, Jordan Miller, Ian Kinstlinger, Savannah Cofer
  • Patent number: 12012333
    Abstract: Methods and systems are disclosed that monitor the carbon and hydrogen production of a pyrolysis reactor system and adjust one or more inputs to the reactor system to improve performance when one or both of the monitored carbon and hydrogen production falls outside of a target performance specification. In particular, the ratio of fuel to oxidant (“fuel/oxidant ratio”) supplied to a combustion chamber of the reactor system is adjusted to below a fuel/oxidant equivalence ratio range, defined as 0.9-1.1, when both carbon and hydrogen production falls below a target carbon and hydrogen specification, and adjusted above the fuel/oxidant equivalence ratio range when only the carbon production falls below a target carbon specification. The target specification can include a number of parameters including production rate, morphology (of carbon), and operating temperature.
    Type: Grant
    Filed: November 9, 2023
    Date of Patent: June 18, 2024
    Assignee: EKONA POWER INC.
    Inventors: David Aaron Leboe, John Benjamin Hinkey, Jr., Gary Edward Schubak, Christopher Edwin John Reid, Kenneth William Kratschmar, Michael John Aarnio
  • Patent number: 12012478
    Abstract: Polymers suitable for forming carbon nanotube-functionalized reverse thermal gel compositions, compositions including the polymers, and methods of forming and using the polymers and compositions are disclosed. The compositions have reverse thermal gelling properties and transform from a liquid/solution to a gel—e.g., near or below body temperature. The polymers and compositions can be injected into or proximate an area in need of treatment.
    Type: Grant
    Filed: March 21, 2023
    Date of Patent: June 18, 2024
    Assignee: The Regents of the University of Colorado
    Inventors: Daewon Park, Brisa Pena Castellanos, Susanna Bosi, Luisa Mestroni, Maurizio Prato
  • Patent number: 12006220
    Abstract: Embodiments described herein relate generally to the large scale production of functionalized graphene. In some embodiments, a method for producing functionalized graphene includes combining a crystalline graphite with a first electrolyte solution that includes at least one of a metal hydroxide salt, an oxidizer, and a surfactant. The crystalline graphite is then milled in the presence of the first electrolyte solution for a first time period to produce a thinned intermediate material. The thinned intermediate material is combined with a second electrolyte solution that includes a strong oxidizer and at least one of a metal hydroxide salt, a weak oxidizer, and a surfactant. The thinned intermediate material is then milled in the presence of the second electrolyte solution for a second time period to produce functionalized graphene.
    Type: Grant
    Filed: July 5, 2022
    Date of Patent: June 11, 2024
    Assignee: NanoXplore Inc.
    Inventors: Marie Bozalina, Philippe Perret, Soroush Nazarpour
  • Patent number: 12006222
    Abstract: A method for the manufacture of microwave-reduced graphene oxide (MW-rGO) including: the provision of graphene oxide (GO), the reduction of GO into reduced graphene oxide (rGO) using a reducing agent and the reduction of rGO into MW-rGO by microwaving under air atmosphere in presence of a catalyst.
    Type: Grant
    Filed: July 9, 2019
    Date of Patent: June 11, 2024
    Assignee: ArcelorMittal
    Inventors: Thi Tan Vu, Oscar Perez Vidal, Juan Jose Arribas, David Noriega Perez, Roberto Suarez Sanchez
  • Patent number: 12006223
    Abstract: An activated carbon powder comprising activated carbon particles that comprise D-band carbon corresponding to a sp3 hybridized disordered carbon phase and G-band carbon corresponding to a sp2 hybridized graphitic phase at a controlled proportion. Additionally, the activated carbon particles comprise nitrogen at an amount that is in a range of about 0.3 atomic % to about 1.8 atomic % of the activated carbon particles, wherein at least some of the nitrogen atoms are substituted for carbon atoms in the crystal lattice structure of the G-band carbon. Also, the carbon particles have a surface area that is in a range of about 900 m2/g to about 2,500 m2/g, an average pore width in a range of about 1 nm to about 4 nm, a microporous surface area in a range of about 300 m2/g to about 1,350 m2/g, and a cumulative surface area of pores with a hydraulic radius in a range of 0.285 nm to 1.30 nm that is in a range of about 1,000 m2/g to about 3,000 m2/g.
    Type: Grant
    Filed: November 12, 2019
    Date of Patent: June 11, 2024
    Assignees: Pittsburg State University, Missouri Soybean Merchandising Council
    Inventors: Ram Gupta, Pawan Kahol
  • Patent number: 11993516
    Abstract: In the present invention, only low-growth carbon nanotubes are selectively separated among solid particles discharged during a reaction and then re-input to a reactor, so that it is possible to improve the quality of a carbon nanotube product to be produced and the productivity of a carbon nanotube production process.
    Type: Grant
    Filed: November 30, 2020
    Date of Patent: May 28, 2024
    Assignee: LG CHEM, LTD.
    Inventors: Yon Jee Kim, Kwang Woo Yoon, Og Sin Kim, Se Hyun Kim, Seung Yong Lee
  • Patent number: 11996445
    Abstract: A carbon nanotube composite is described that can be accurately applied to a desired position by inkjet and a dispersion liquid using the same, where a main object is a carbon nanotube composite in which a conjugated polymer is attached to at least a part of the surface of a carbon nanotube, the conjugated polymer having a side chain represented by general formula (1): wherein R, X and A are defined as described.
    Type: Grant
    Filed: September 17, 2019
    Date of Patent: May 28, 2024
    Inventors: Kazuki Isogai, Seiichiro Murase, Ryuichi Tanaka, Hidekazu Nishino
  • Patent number: 11987500
    Abstract: A nanomaterial and a method of preparing the nanomaterial are provided. The nanomaterial is a product formed by a reaction of functionalized carbon nanotube comprising first and second aminoalkyl groups covalently bonded to a surface of the carbon nanotube and a porphyrin ring of formula (I). A method of removing a pollutant from an aqueous solution by contacting the aqueous solution having an initial concentration of the pollutant with the nanomaterial is also provided.
    Type: Grant
    Filed: February 25, 2022
    Date of Patent: May 21, 2024
    Assignee: Imam Abdulrahman Bin Faisal University
    Inventor: Asma Mohammed Elsharif
  • Patent number: 11981566
    Abstract: Provided is a production method of a carbon sheet having a structure intertwining only carbon nanotubes and having a porosity of 5% to 90%. The method comprises: removing a solvent from a dispersion liquid containing carbon nanotubes, spacer particles, and the solvent to obtain a primary sheet containing the carbon nanotubes and the spacer particles; and removing the spacer particles from the primary sheet. Alternatively, the method comprises: impregnating a porous substrate made from carbon with a dispersion liquid containing carbon nanotubes and a solvent, to obtain a dispersion liquid-impregnated porous substrate; and removing the solvent from the dispersion liquid-impregnated porous substrate. Alternatively, the method comprises: dispersing carbon nanotubes in a solvent to obtain a dispersion liquid, wherein an average bundle diameter of the carbon nanotubes in the dispersion liquid is 0.5 ?m or more and 1,000 ?m or less; and removing the solvent from the dispersion liquid.
    Type: Grant
    Filed: April 20, 2023
    Date of Patent: May 14, 2024
    Inventors: Tomoko Yamagishi, Mitsugu Uejima
  • Patent number: 11981568
    Abstract: An object of the present invention is to provide a member and a method for producing a fibrous carbon nanohorn aggregate with high efficiency.
    Type: Grant
    Filed: January 27, 2020
    Date of Patent: May 14, 2024
    Inventors: Ryota Yuge, Hideyuki Satou
  • Patent number: 11976387
    Abstract: An embodiment is a method of recycling carbon fibers that includes: preparing a carbon fiber reinforced plastic formed product that includes a carbon fiber reinforced plastic containing a carbon fiber and a resin; thermally decomposing or dissolving the resin in the carbon fiber reinforced plastic formed product by a first heating process or a first dissolving process; and winding while drawing the carbon fiber from the carbon fiber reinforced plastic formed product after the first heating process or the first dissolving process. The winding further includes thermally decomposing or dissolving a residue of the resin attached to the carbon fiber by a second heating process or a second dissolving process and adding a sizing agent to the carbon fiber after the second heating process or the second dissolving process.
    Type: Grant
    Filed: May 17, 2021
    Date of Patent: May 7, 2024
    Inventors: Toshio Watanabe, Terufumi Takayama
  • Patent number: 11975970
    Abstract: High quality carbon nanochains or carbon nanotubes are produced by methods that include mixing a carbon-containing feedstock with a catalyst to form a feedstock/catalyst mixture, or coating a catalyst with a carbon-containing feedstock, and subjecting the feedstock/catalyst mixture or feedstock-coated catalyst to irradiation with a laser to convert the feedstock into carbon nanochains or carbon nanotubes in the presence of the catalyst. In some instances, the feedstock is converted to a char by pyrolysis and the char is instead subjected to laser irradiation. The carbon-containing feedstock can be a biomass or a carbonaceous material. In some instances, the catalyst is a metal salt, preferably a transition metal salt. In some instances, the catalyst is an elemental metal, an alloy, or a combination thereof.
    Type: Grant
    Filed: July 23, 2021
    Date of Patent: May 7, 2024
    Assignee: The George Washington University
    Inventors: Michael J. Wagner, Nathan A. Banek, Dustin T Abele, Kevin R. McKenzie, Jr.
  • Patent number: 11970397
    Abstract: Disclosed is a method for preparing a nano-porous carbon material, comprising the following steps of: mixing polypyrrole nano-fibers with an activator, conducting microwave heating for reaction, and purifying to obtain the nano-porous carbon material. Compared with a conventional high-temperature carbonization method, the method for preparing the nano-porous carbon material of the present disclosure is simple in raw material, convenient to operate, less in time consumption and more suitable for mass preparation and production of the nano-porous carbon materials.
    Type: Grant
    Filed: April 28, 2019
    Date of Patent: April 30, 2024
    Inventors: Yang Liu, Chao Zhang, Pengfei Yin, Jiareng Chen, Bin Cui
  • Patent number: 11958056
    Abstract: Upgraded coal, method of forming the same, and graphene films and quantum dots made therefrom. A method of upgrading coal includes cleaning coal to form a cleaned coal residue. The method also includes (A) reacting the cleaned coal residue with an oxidizable inorganic metallic agent, or (B) reacting the cleaned coal residue with a reducing agent, or a combination thereof, to form the upgraded coal.
    Type: Grant
    Filed: August 25, 2021
    Date of Patent: April 16, 2024
    Assignee: Energy and Environmental Research Center Foundation
    Inventors: Alexander Azenkeng, Jason Laumb
  • Patent number: 11958747
    Abstract: Disclosed are methods and systems of providing carbon nanotubes decorated with polymer coated metal nanoparticles. Then, annealing the metal coated carbon nanotubes to reduce a quantity of hydrophilic components of the polymer coating.
    Type: Grant
    Filed: April 20, 2021
    Date of Patent: April 16, 2024
    Inventors: Gabriel Iftime, Beomseok Kim, Clinton J. Smith, Eric D. Cocker, Junhua Wei, David Eric Schwartz, Meyya Meyyappan, Rahul Pandey, Yong Zhang
  • Patent number: 11952279
    Abstract: A carbon nanoparticle and methods of making and using a carbon nanoparticle are provided. The carbon nanoparticle includes a reaction product of an organic reactant, an alkoxy amine, and an organometallic compound. The organometallic compound includes an element selected from the group consisting of a rare earth element, a transition metal element, and combinations thereof, and the carbon nanoparticle includes from 0.5 to 50 wt. % of the element. A method of making the carbon nanoparticle is also provided. The method includes combining the organic reactant, the alkoxy amine, and the organometallic compound into a mixture and heating the mixture such that the carbon nanoparticle forms. A method of determining a flow characteristic of a formation or an attribute of a fluid in a formation using the carbon nanoparticle is also provided.
    Type: Grant
    Filed: August 23, 2021
    Date of Patent: April 9, 2024
    Inventor: Wei Wang
  • Patent number: 11952278
    Abstract: The present invention belongs to the technical field of biomass carbon materials, and relates to a lignin porous carbon nanosheet, a preparation method therefor, and an application thereof in supercapacitor electrode materials. The method of the present invention performs layer-by-layer self-assembly of sulfonated lignin and oxalate in a selective solvent to prepare a layer-by-layer self-assembled lignin/oxalate composite, which is then carbonized and pickled to obtain the lignin porous carbon nanosheets. The lignin porous carbon nanosheets prepared by the above method of the present invention have a specific surface area of 200-1500 m2/g, a micropore specific surface area of 100-500 m2/g, a mesoporous specific surface area of 100-1000 m2/g, a pore diameter of 0.5-30 nm, and a pore volume of 0.5-1.5 cm3/g; they can be applied to supercapacitor electrode materials, showing higher specific capacitance and excellent rate performance (with a specific capacitance retention rate of 76.
    Type: Grant
    Filed: October 23, 2019
    Date of Patent: April 9, 2024
    Assignee: South China University of Technology
    Inventors: Xueqing Qiu, Dongjie Yang, Huan Wang, Zhiqiang Fang, Hongming Lou, Weifeng Liu, Zhixian Li, Jinhao Huang, Xinping Ouyang
  • Patent number: 11945912
    Abstract: The present invention provides a method of manufacturing a polyimide film including unit polymers that are omnidirectionally distributed, and a polyimide film. The present invention also provides a graphite sheet having good quality manufactured using the polyimide film.
    Type: Grant
    Filed: November 20, 2018
    Date of Patent: April 2, 2024
    Inventors: Hyong Sop Jo, Jae Hyun Kim