Patents Examined by Daniel C. McCracken
  • Patent number: 10781104
    Abstract: Provided is a composite substrate which is provided with: a single crystal silicon carbide thin film 11 having a thickness of 1?m or less; a handle substrate 12 which supports the single crystal silicon carbide thin film 11 and is formed from a heat-resistant material (excluding single crystal silicon carbide) having a heat resistance of not less than 1,100° C.; and an intervening layer 13 which has a thickness of 1?m or less and is arranged between the single crystal silicon carbide thin film 11 and the handle substrate 12, and which is formed from at least one material selected from among silicon oxide, silicon nitride, aluminum oxide, aluminum nitride, zirconium oxide, silicon and silicon carbide, or from at least one metal material selected from among Ti, Au, Ag, Cu, Ni, Co, Fe, Cr, Zr, Mo, Ta and W. This composite substrate according to the present invention enables the formation of a nanocarbon film having few defects at low cost.
    Type: Grant
    Filed: December 16, 2015
    Date of Patent: September 22, 2020
    Inventors: Shoji Akiyama, Yoshihiro Kubota, Makoto Kawai, Shigeru Konishi, Hiroshi Mogi
  • Patent number: 10766772
    Abstract: A method for preparing a three-dimensional graphene structure, and an energy storage device are provided, the method including forming a graphene precursor by heating a carbohydrate and a gas generator, forming a graphene structure having a cavity therein by carbonizing the graphene precursor, and forming nanopores in the graphene structure, wherein the nanopores pass through an outer surface and an inner surface of the graphene structure, and are connected with the cavity.
    Type: Grant
    Filed: November 3, 2017
    Date of Patent: September 8, 2020
    Assignees: Electronics and Telecommunications Research Institute, Gachon University of Industry-Academic Cooperation Foundation
    Inventors: Tae-Young Kim, In-Kyu You, Bit Na Kim, In Gyoo Kim, Sung-Hoon Jung, Seung-Jun Park
  • Patent number: 10759663
    Abstract: A catalyst composition for the production of carbon nanotubes (CNT) with controlled morphology is disclosed. The catalyst is represented by formula [(MxMny)Moz][binary metal oxide](100?(x+y+z)), where x is in the range 1 to 25 wt %, y is in the range 0.1 to 20 wt %, and z is in the range 0.0 to 10 wt %. Further M represents either iron or cobalt or nickel along with manganese and molybdenum supported on binary metal oxides comprising of boron, magnesium, aluminum, silicon, calcium, barium, and combination thereof. The CNT morphology can be tailor-made with the plural combination of nature of metal and promoters in appropriate proportions. The process yields the CNT with bulk density in the range of 0.01 to 0.20 g/cc, diameter in the range of 5 to 30 nm and purity greater than 95 wt %.
    Type: Grant
    Filed: March 8, 2018
    Date of Patent: September 1, 2020
    Assignee: Indian Oil Corporation Limited
    Inventors: Narayanam Seshubabu, Palvannan Mohanasundaram, Bhanumurthy Samala, Naduhatty Selai Raman, Rashmi Bagai, Sankara Sri Venkata Ramakumar, Biswapriya Das
  • Patent number: 10758882
    Abstract: The present invention relates to a device for drying and collecting a product such as a carbon nanotube pellet or aggregate, which can accelerate solvent evaporation by inserting and dispersing high temperature gas into a drying column as well as by a heat source inside and outside of the column, and can quickly remove the evaporated solvent. Further, the device can be used for drying and collecting processes while minimizing product breakage by regulating the gas flow rate and controlling flow of the product in the column. Thus, the device can be effectively applied to mass production of a carbon nanotube pellet product.
    Type: Grant
    Filed: July 12, 2017
    Date of Patent: September 1, 2020
    Assignee: LG CHEM, LTD.
    Inventors: Ogsin Kim, Kwang Woo Yoon, Seungyong Lee, Dong Hyun Cho, Seokwon Kim, Jihee Woo
  • Patent number: 10737960
    Abstract: Methods for synthesizing macroscale 3D heteroatom-doped carbon nanotube materials (such as boron doped carbon nanotube materials) and compositions thereof. Macroscopic quantities of three-dimensionally networked heteroatom-doped carbon nanotube materials are directly grown using an aerosol-assisted chemical vapor deposition method. The porous heteroatom-doped carbon nanotube material is created by doping of heteroatoms (such as boron) in the nanotube lattice during growth, which influences the creation of elbow joints and branching of nanotubes leading to the three dimensional super-structure. The super-hydrophobic heteroatom-doped carbon nanotube sponge is strongly oleophilic and can soak up large quantities of organic solvents and oil. The trapped oil can be burnt off and the heteroatom-doped carbon nanotube material can be used repeatedly as an oil removal scaffold.
    Type: Grant
    Filed: September 24, 2019
    Date of Patent: August 11, 2020
    Assignee: CSS Nanotech, Inc.
    Inventors: Daniel Hashim, Pulickel M. Ajayan, Mauricio Terrones
  • Patent number: 10717652
    Abstract: A method for preparing large graphene sheets in large scale includes steps of: under a mild condition, processing graphite powders with intercalation through an acid and an oxidant; washing away metal ions and inorganic ions in the graphite powders with dilute hydrochloric acid, then filtering and drying; and, finally processing with a heat treatment. The present invention breaks through a series of bottlenecks restricting an efficient preparation of graphene that result from a traditional method of using large amounts of deionized water to wash graphite oxide to be neutral, and easily realizes a batch production. A radial scale of the prepared graphene sheets is distributed from 20 um to 200 um.
    Type: Grant
    Filed: March 12, 2015
    Date of Patent: July 21, 2020
    Inventors: Yongxiao Bai, Xinjun Hu, Yan Sha, Xiaolin Sha
  • Patent number: 10710882
    Abstract: Embodiments of the invention are directed to systems and methods for purifying graphite particles. Graphite flakes can be milled, and then separated into groups with different nominal sizes. The different groups of particles are purified according to optimized purification processes. Groups of purified particles with narrow size distributions are created using embodiments of the invention.
    Type: Grant
    Filed: June 23, 2017
    Date of Patent: July 14, 2020
    Assignee: Syrah Resources Ltd.
    Inventors: Jens Berkan, Joseph Williams, Peter Barnes, Tah Nean Chan
  • Patent number: 10703633
    Abstract: [Problem]To provide a nanocarbon composite material that is superior in providing electrical conductivity. [Solution]In a nanocarbon composite material 100 in an example embodiment of the present invention, a fibrous carbon nanohorn aggregate 11 of a plurality of single-walled carbon nanohorn aggregates connected fibrously is dispersively formed in a matrix 13.
    Type: Grant
    Filed: June 17, 2016
    Date of Patent: July 7, 2020
    Inventor: Ryota Yuge
  • Patent number: 10702922
    Abstract: A method for manufacturing a metallic component including the steps of providing a capsule, which defines at least a portion of the shape of the metallic component, arranging metallic material in the capsule, sealing the capsule, subjecting the capsule to Hot Isostatic Pressing for a predetermined time, at a predetermined pressure and at a predetermined temperature, and optionally, removing the capsule. The metallic material is at least one pre-manufactured coherent body, which pre-manufactured coherent body being made of metallic powder, wherein at least a portion of the metallic powder is consolidated such that the metallic powder is held together into a pre-manufactured coherent body. At least one portion of the pre-manufactured coherent body is manufactured by Additive Manufacturing by subsequently arranging superimposed layers of metallic powder.
    Type: Grant
    Filed: April 1, 2015
    Date of Patent: July 7, 2020
    Assignee: Sandvik Intellectual Property AB
    Inventors: Tomas Berglund, Rickard Sandberg, Martin Ostlund, Johan Sundstrom
  • Patent number: 10703634
    Abstract: The present disclosure relates to a method for the preparation of graphene from coal as a raw material, and more particularly to a method for the preparation of microporous graphene from Chinese Zhundong coal. The process consists of the following steps: first, refining the coal block or coal particle to get fine powdered coal; second, immersing the powdered coal with activation agent solution and drying water to get molten mixture; third, carbonizing the molten mixture in an inert atmosphere and at a high temperature to obtain the carbonized product; fourth, successively acid washing, water-washing and drying the carbonized product to obtain the coal-based porous graphene with the surface area up to 3345 m2/g. The invention mainly solves the problems of the current method for the preparation of the microporous graphene with high specific surface area, including high cost of raw materials, complicated procedures and low yield.
    Type: Grant
    Filed: May 13, 2016
    Date of Patent: July 7, 2020
    Assignee: ENN Graphene Technology Co., LTD.
    Inventor: Yuhong Zhang
  • Patent number: 10704112
    Abstract: A process for producing a steel component with a metallic, corrosion protection coating and very good mechanical properties may involve directly applying an iron-based alloy to a steel substrate. The iron-based alloy may contain 50-80% by weight of Fe, 0-30% by weight of Mg, 0-5% by weight of Al, 0-5% by weight of Ti, 0-10% by weight of Si, 0-10% by weight of Li, 0-10% by weight of Ca, 0-30% by weight of Mn, and a balance of Zn and unavoidable impurities. The steel substrate that has been coated with the iron-based alloy may then be subjected to hot forming in order to obtain the steel component. A metallic coating that protects against corrosion for steel components to be produced by the process of hot forming can be obtained.
    Type: Grant
    Filed: May 4, 2015
    Date of Patent: July 7, 2020
    Assignees: ThyssenKrupp Steel Europe AG, ThyssenKrupp AG
    Inventors: Bernd Schuhmacher, Christian Schwerdt, Axel Schrooten, Ralf Bause
  • Patent number: 10703632
    Abstract: Disclosed is a method of purifying carbon nanotubes, including treating carbon nanotubes with an inert gas at a high temperature in a low vacuum in a reactor and obtaining ultrapure carbon nanotubes, wherein the ultrapure carbon nanotubes contain 50 ppm or less of each metal remaining therein.
    Type: Grant
    Filed: September 1, 2017
    Date of Patent: July 7, 2020
    Assignee: SK INNOVATION CO., LTD.
    Inventors: Yeon Hwa La, Ji Min Kim, Min Ji Sung, Woong Chul Shin
  • Patent number: 10689725
    Abstract: The invention relates to a process for producing a component having improved elongation at break properties, in which a component is firstly produced, preferably in a hot forming or press curing process, and the component is heat treated after hot forming and/or press curing, where the heat treatment temperature T and the heat treatment time t essentially satisfy the numerical relationship T?900·t?0.087, where the heat treatment temperature T is in ° C. and the heat treatment time t is in seconds. The invention also relates to a component, in particular an automobile body component or the chassis of a motor vehicle, which has been produced by such a process. The invention further relates to the use of such a component as part of an automobile body or a chassis of a motor vehicle.
    Type: Grant
    Filed: March 17, 2017
    Date of Patent: June 23, 2020
    Assignee: ThyssenKrupp Steel Europe AG
    Inventors: Franz-Josef Lenze, Sascha Sikora, Janko Banik
  • Patent number: 10688695
    Abstract: A methodology is disclosed to produce nanostructured carbon particles that act as effective reinforcements. The process is conducted in the solid state at close to ambient conditions. The carbon nanostructures produced under this discovery are nanostructured and are synthesized by mechanical means at standard conditions. The benefit of this processing methodology is that those carbon nanostructures can be used as effective reinforcements for composites of various matrices. As example, are to demonstrate its effectiveness the following matrices were including in testing: ceramic, metallic, and polymeric (organic and inorganic), as well as bio-polymers. The reinforcements have been introduced in those matrices at room and elevated temperatures. The raw material is carbon soot that is a byproduct and hence abundant and cheaper than pristine carbon alternatives (e.g. nanotubes, graphene).
    Type: Grant
    Filed: August 21, 2018
    Date of Patent: June 23, 2020
    Assignee: University of Houston System
    Inventors: Francisco C. Robles, Hector A. Calderon, Anderson Okonkwo
  • Patent number: 10683590
    Abstract: Embodiments of the invention relate generally to graphene fibers and, more particularly, to graphene fibers comprising intercalated large-sized graphene oxide (LGGO)/graphene sheets and small-sized graphene oxide (SMGO)/graphene sheets having high thermal and electrical conductivities and high mechanical strength. In one embodiment, the invention provides a graphene fiber comprising: a plurality of intercalated graphene sheets including: a plurality of large-sized graphene sheets; and a plurality of small-sized graphene sheets, wherein at least one of the plurality of small-sized graphene sheets is disposed between at least two of the plurality of large-sized graphene sheets.
    Type: Grant
    Filed: July 18, 2016
    Date of Patent: June 16, 2020
    Assignee: Rensselaer Polytechnic Institute
    Inventors: Jie Lian, Guoqing Xin
  • Patent number: 10683207
    Abstract: The invention relates to a method for sintering carbon bodies (16) in a furnace comprising at least a first furnace chamber (11) for receiving the carbon bodies, which are accommodated in a packing material (23), the carbon bodies being arranged between lateral chamber walls (12, 13, 21) of the furnace chamber, and the furnace chamber serving to form a preheating zone V, a heating zone H provided with a heating device, and a cooling zone A, wherein a packing material (23) made, at least in part, of a highly heat-conductive material is used.
    Type: Grant
    Filed: June 16, 2016
    Date of Patent: June 16, 2020
    Inventor: Wolfgang Leisenberg
  • Patent number: 10669155
    Abstract: A method of synthesizing a graphene-based material comprises exposing graphene-encapsulated metal nanoparticles, each nanoparticle comprising a graphene shell surrounding a metal core, to a cracking and welding gas composition under conditions sufficient to crack graphene shells and to reconstruct cracked graphene shells to form the graphene-based material.
    Type: Grant
    Filed: January 4, 2018
    Date of Patent: June 2, 2020
    Inventors: Zhiyong Cai, Qiangu Yan, Jilei Zhang, Jinghao Li, Bruno Sisto Marcoccia, James David Freiberg
  • Patent number: 10669911
    Abstract: A diesel exhaust fluid delivery system and a dual-variable control strategy for adjusting the delivery pressure and the mass flow rate of the fluid passing through the system. The method for operating the system using two operating modes: low flow rate and high flow rate. While operating in the low flow rate operating mode, the speed of a DEF pump remains constant and DEF delivery to the exhaust system is adjusted by controlling a backflow valve. While operating in the high flow rate operating mode, the backflow valve is closed and the speed of the pump is adjusted to regulate DEF delivery to the exhaust system.
    Type: Grant
    Filed: August 4, 2015
    Date of Patent: June 2, 2020
    Assignee: Robert Bosch GmbH
    Inventors: Andres Murube Lindahl, Oliver Wintersteller
  • Patent number: 10655020
    Abstract: The present disclosure provides supercapacitors that may avoid the shortcomings of current energy storage technology. Provided herein are electrochemical systems, comprising three dimensional porous reduced graphene oxide film electrodes. Prototype supercapacitors disclosed herein may exhibit improved performance compared to commercial supercapacitors. Additionally, the present disclosure provides a simple, yet versatile technique for the fabrication of supercapacitors through the direct preparation of three dimensional porous reduced graphene oxide films by filtration and freeze casting.
    Type: Grant
    Filed: December 19, 2016
    Date of Patent: May 19, 2020
    Assignee: The Regents of the University of California
    Inventors: Richard Barry Kaner, Yuanlong Shao
  • Patent number: 10655061
    Abstract: The present invention relates to a process for the preparation of blue-fluorescence emitting carbon dots (CDTs) from sub-bituminous tertiary high sulfur Indian coals. More particularly, the present invention relates to the production of characteristics carbon dots from low-quality Indian coals by an ultrasonic-assisted wet-chemical method. Also, the present invention provides a simple and environmentally benign method for fabrication of characteristics and size-controlled carbon dots.
    Type: Grant
    Filed: September 14, 2017
    Date of Patent: May 19, 2020
    Inventors: Binoy Kumar Saikia, Tonkeswar Das, Sonali Roy, Bardwi Narzary, Hari Prasanna Dekaboruah, Manobjyoti Bordoloi, Jiumoni Lahkar, Dipankar Neog, Danaboyina Ramaiah