Patents Examined by Daniel H Miller
  • Patent number: 11649167
    Abstract: The present invention relates to a method of reproducing at least one single-walled carbon nanotube (3) having predefined electronic properties or a plurality of single-walled carbon nanotube (3) having the same electronic properties. A dispersion (2) is produced for this purpose and carbon nanotubes (3) contained in the dispersion are processed into fragments (6) by energy input. These fragments (6) are applied to and oriented on a carrier (7). The fragments (6) are subsequently extended by chemical vapor deposition and the originally present carbon nanotubes (3) are thus reproduced.
    Type: Grant
    Filed: June 24, 2015
    Date of Patent: May 16, 2023
    Inventors: Viktor Bezugly, Eugenia Bezugly, Vyacheslav Khavrus, Denis Krylov, Gianaurelio Cuniberti
  • Patent number: 11643328
    Abstract: Disclosed is a method of producing surface-treated carbon nanostructures which comprises: a depressurization step wherein a carbon nanostructure-containing liquid which comprises carbon nanostructures and a dispersion medium is depressurized; and a surface treatment step wherein an oxidizing agent is added in the carbon nanostructure-containing liquid after or during the depressurization step so that the carbon nanostructures have a surface oxygen atom concentration of 7.0 at % or more. The carbon nanostructures preferably comprise carbon nanotubes.
    Type: Grant
    Filed: February 19, 2018
    Date of Patent: May 9, 2023
    Inventor: Osamu Kawakami
  • Patent number: 11597652
    Abstract: A method of producing Stress Activated Pyrolytic Carbon-Carbon NanoTube (SAPC-CNT) fibers is disclosed. The fibers are a composite consisting of a tubular core of pristine graphite planes that include carbon nanotubes (CNTs) surrounded by semi-graphitic carbon material that includes Stress Activated Pyrolytic Carbon (SAPC), the SAPC being characterized by wavy graphite planes ranging from 0.1 nm to 1 nm and oriented parallel to the axis of each fiber, the semi-graphitic carbon material also being characterized by an inclusion of 4 to 10 atomic percent of nitrogen heteroatoms, the nitrogen heteroatoms including an above 60% of quaternary and pyridinic nitrogen groups.
    Type: Grant
    Filed: November 21, 2018
    Date of Patent: March 7, 2023
    Assignee: Cence, Inc.
    Inventors: Sunshine Holmberg, Stoyan Atanassov Radkov
  • Patent number: 11584651
    Abstract: A porous carbon that has an extremely high specific surface area while being crystalline, and a method of manufacturing the porous carbon are provided. A porous carbon has mesopores 4 and a carbonaceous wall 3 constituting an outer wall of the mesopores 4, wherein the carbonaceous wall 3 has a portion forming a layered structure. The porous carbon is fabricated by mixing a polyamic acid resin 1 as a carbon precursor with magnesium oxide 2 as template particles; heat-treating the mixture in a nitrogen atmosphere at 1000° C. for 1 hour to cause the polyamic acid resin to undergo heat decomposition; washing the resultant sample with a sulfuric acid solution at a concentration of 1 mol/L to dissolve MgO away; and heat-treating the noncrystalline porous carbon in a nitrogen atmosphere at 2500° C.
    Type: Grant
    Filed: March 9, 2012
    Date of Patent: February 21, 2023
    Assignee: TOYO TANSO CO., LTD.
    Inventors: Takahiro Morishita, Hironori Orikasa, Makoto Tatsumi, Naoto Ohta, Masaki Okada
  • Patent number: 11572278
    Abstract: A method of growing graphene includes forming a carbon monolayer on a substrate by injecting a first reaction gas into a reaction chamber, wherein the first reaction gas includes a first source including a component that is a carbon source and belongs to an electron withdrawing group, and injecting a second reaction gas including a second source into the reaction chamber, wherein the second source includes a functional group that forms a volatile structure by reacting with a component that belongs to an electron withdrawing group. Graphene may be directly grown on a surface of the substrate by repeatedly injecting the first reaction gas and the second reaction gas.
    Type: Grant
    Filed: November 6, 2019
    Date of Patent: February 7, 2023
    Inventors: Hyeonjin Shin, Keunwook Shin, Changhyun Kim, Seunggeol Nam, Kyung-Eun Byun, Hyunjae Song, Eunkyu Lee, Changseok Lee, Alum Jung, Yeonchoo Cho
  • Patent number: 11572272
    Abstract: A process for producing a hydrogen storage means. Separate layers comprising a hydrogen-storing material and a heat-conducting material are introduced into a press mold. The separate layers of the hydrogen-storing material and the heat-conducting material are compressed together to generate a sandwich structure. The heat-conducting material, on use of the sandwich structure as hydrogen storage means, assumes the task of conducting heat.
    Type: Grant
    Filed: November 4, 2019
    Date of Patent: February 7, 2023
    Assignee: GKN Sinter Metals Engineering GmbH
    Inventors: Antonio Casellas, Klaus Dollmeier, Eberhard Ernst, René Lindenau, Anastasia Özkan, Lars Wimbert
  • Patent number: 11572281
    Abstract: A method for graphene functionalization that preserves electronic properties and enables nanoparticles deposition comprising providing graphene, functionalizing the graphene via non-covalent or covalent functionalization, rinsing the graphene, drying the graphene, and forming functionalized graphene wherein the functionalized graphene preserves electronic properties and enables nanoparticles deposition. A functionalized graphene wherein the graphene functionalization preserves electronic properties and enables nanoparticles deposition.
    Type: Grant
    Filed: January 29, 2018
    Date of Patent: February 7, 2023
    Assignee: The Government of the United States of America, as represented by the Secretary of the Navy
    Inventors: Evgeniya H. Lock, Michael S. Osofsky, Raymond C Y Auyeung, Rachael L. Myers-Ward, David Kurt Gaskill, Joseph Prestigiacomo
  • Patent number: 11560315
    Abstract: The present invention provides a graphene structure having graphene bubbles and a preparation method for the same. The preparation method comprises: providing a substrate; forming a hydrogen terminated layer on a top surface of the substrate and a graphene layer disposed on a top surface of the hydrogen terminated layer; and placing a probe on the graphene layer and applying a preset voltage to the probe, to excite a part of the hydrogen terminated layer at a position corresponding to the probe to convert into hydrogen, the hydrogen causing the graphene layer at a position corresponding to the hydrogen to bulge, so as to form a graphene bubble enveloping the hydrogen.
    Type: Grant
    Filed: April 10, 2018
    Date of Patent: January 24, 2023
    Assignee: Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Science, Shanghai, China
    Inventors: Zengfeng Di, Pengfei Jia, Zhongying Xue, Xiaohu Zheng, Miao Zhang, Xi Wang
  • Patent number: 11554959
    Abstract: A process for exfoliating graphene, includes a step of irradiating a first substrate comprising graphene on its surface, with a helium or hydrogen plasma containing ions of energy comprised between 10 and 60 eV. A process for fabricating graphene on the surface of a second substrate, comprising the exfoliating process.
    Type: Grant
    Filed: November 21, 2017
    Date of Patent: January 17, 2023
    Inventors: Gilles Cunge, Alexandra Davydova, Emilie Despiau-Pujo, Djawhar Ferrah, Olivier Renault
  • Patent number: 11518142
    Abstract: Method for making a porous graphene layer of a thickness of less than 100 nm with pores having an average size in the range of 5-900 nm, includes the following steps: providing a catalytically active substrate catalyzing graphene formation under chemical vapor deposition conditions, the catalytically active substrate in or on its surface being provided with a plurality of catalytically inactive domains having a size essentially corresponding to the size of the pores in the resultant porous graphene layer; chemical vapor deposition using a carbon source in the gas phase and formation of the porous graphene layer on the surface of the catalytically active substrate. The pores in the graphene layer are in situ formed due to the presence of the catalytically inactive domains.
    Type: Grant
    Filed: June 9, 2017
    Date of Patent: December 6, 2022
    Assignees: ETH Zurich, HeiQ Materials AG
    Inventors: Murray Height, Hyung Gyu Park, Kyoungjun Choi
  • Patent number: 11512024
    Abstract: A method for densifying porous annular substrates by chemical vapor infiltration, includes providing a plurality of unit modules including a support tray on which substrates are stacked, the support tray including a gas intake opening extended by an injection tube disposed in an internal volume formed by the central passages of the stacked substrates, the injection tube including gas injection orifices opening into the internal volume, forming stacks of unit modules in the enclosure of a densification furnace and injecting, into the stacks of unit modules, a gas phase including a gas precursor of a matrix material to be deposited within the porosity of the substrates.
    Type: Grant
    Filed: August 12, 2019
    Date of Patent: November 29, 2022
    Inventors: Franck Lamouroux, Rémy Dupont, Sébastien Bertrand, Stéphane Roger André Goujard, Matthieu Champagne, Olivier Clausse, Jean-Michel Garcia, Jeff Roustand
  • Patent number: 11505502
    Abstract: Hybrid composite materials including carbon nanotube sheets and flexible ceramic materials, and methods of making the same are provided herein. In one embodiment, a method of forming a hybrid composite material is provided, the method including: placing a layer of a first flexible ceramic composite on a lay-up tooling surface; applying a sheet of a pre-preg carbon fiber reinforced polymer on the flexible ceramic composite; curing the flexible ceramic composite and the pre-preg carbon fiber reinforced polymer sheet together to form a hybrid composite material; and removing the hybrid composite material from the lay-up tooling surface, wherein the first flexible ceramic composite comprises an exterior surface of the hybrid composite material.
    Type: Grant
    Filed: October 24, 2017
    Date of Patent: November 22, 2022
    Assignees: Florida State University Research Foundation, Inc., The Government of the United States of America, as represented by the Secretary of the Navy
    Inventors: Chengying Xu, William C. Nickerson
  • Patent number: 11508570
    Abstract: A SiC film structure for obtaining a three-dimensional SiC film by forming the SiC film in an outer circumference of a substrate using a vapor deposition type film formation method and removing the substrate, the SiC film structure including: a main body having a three-dimensional shape formed of a SiC film and having an opening for removing the substrate; a lid configured to cover the opening; and a SiC coat layer configured to cover at least a contact portion between the main body and an outer edge portion of the lid and join the main body and the lid.
    Type: Grant
    Filed: August 28, 2019
    Date of Patent: November 22, 2022
    Assignee: ADMAP INC.
    Inventor: Satoshi Kawamoto
  • Patent number: 11479716
    Abstract: A light-modulating material of which the light transmittance can be controlled over a wide region from visible light to infrared light by voltage application is provided. The light-modulating material comprises a graphene-like carbon material having an aspect ratio of 3 or more and 330 or less.
    Type: Grant
    Filed: July 21, 2017
    Date of Patent: October 25, 2022
    Inventors: Rende Sun, Akira Nakasuga, Shoji Nozato, Keigo Oowashi, Hiroji Fukui, Takeharu Haino, Ryo Sekiya
  • Patent number: 11479467
    Abstract: Disclosed here is a method of fabricating a covalently reinforced carbon nanotube (CNT) assembly. The method includes producing a CNT assembly by pulling entangled CNTs from a CNT array fabricated on a substrate, the CNT assembly including a plurality of CNTs that are aligned; and creating covalent bonding between the CNTs of the CNT assembly by applying a high energy ion irradiation to the CNT assembly.
    Type: Grant
    Filed: January 10, 2018
    Date of Patent: October 25, 2022
    Assignee: Lawrence Livermore National Security, LLC
    Inventors: Xavier N. Lepro Chavez, Chantel M. Aracne-Ruddle, Leonardus Bimo Bayu Aji, Sergei O. Kucheyev, Michael Stadermann
  • Patent number: 11450446
    Abstract: A multi-layered, transparent-conductive stack with improved mechanical robustness, and a method of making the same, is described. The multi-layered film includes a layer of a hybrid film and a layer of a transparent conductive oxide (TCO) coating that is sputter deposited and forms a contact with the hybrid film. The hybrid film includes an interconnected network of carbon nanotubes (CNTs) and a plurality of metal oxide nanoparticles (MONs). The plurality of MONs are randomly distributed in the interconnected network of CNTs forming an electrical contact with the CNTs.
    Type: Grant
    Filed: May 5, 2015
    Date of Patent: September 20, 2022
    Assignee: NANO-C, INC.
    Inventors: Ramesh Sivarajan, Henning Richter, Viktor Vejins
  • Patent number: 11426950
    Abstract: This disclosure relates to electromagnetic absorbing materials, and, more particularly, to a flocked carbon fiber composite material and methods for forming thereof. The flocked carbon fiber material comprises electrostatically applied carbon fibers, having a Z-plane component; electromagnetic modifiers; a substrate; a bonding agent; and an encapsulation agent. The method for forming said flocked carbon fiber composite material comprises preparing carbon fiber strands; separating carbon fiber strand clumps into carbon fiber strands; separating carbon fiber strands into carbon fibers; applying a bonding agent to a substrate; and electrostatically applying the carbon fibers to the substrate. The flocking device used to perform this method comprises an insulative section; a high voltage power source; a container attached to the insulative section; and a filtering section attached to the container.
    Type: Grant
    Filed: February 1, 2019
    Date of Patent: August 30, 2022
    Assignee: TANGITEK, LLC
    Inventors: Robert L. Doneker, Kent G. R. Thompson
  • Patent number: 11421139
    Abstract: A heat spreader. The heat spreader includes a copper substrate layer, and at least one layer of graphene deposited on the copper substrate layer.
    Type: Grant
    Filed: May 28, 2018
    Date of Patent: August 23, 2022
    Assignee: GRAPHITENE LTD.
    Inventors: Stefano Borini, Gaute Juliussen, Paulauskas Mindaugas
  • Patent number: 11408074
    Abstract: Provided herein is a nanoscale material assembly made up of a plurality of nanoscale structures with a crosslinked polymer thermally deposited on the structures. Also disclosed are methods for preparing the nanoscale material assembly with a deposited crosslinked polymer. Further disclosed are various conditions and materials that when used in the preparation of the nanoscale material assemblies further enhance their mechanical properties. In some embodiments, the nanoscale material assemblies can be either nanoscale yarn assemblies or nanoscale sheet assemblies.
    Type: Grant
    Filed: January 10, 2018
    Date of Patent: August 9, 2022
    Assignee: Lawrence Livermore National Security, LLC
    Inventors: Xavier N. Lepro Chavez, Chantel M. Aracne-Ruddle, Salmaan H. Baxamusa, Michael Stadermann
  • Patent number: 11396483
    Abstract: A carbon/carbon brake disk is provided. The carbon/carbon brake disk may comprise a carbon fiber, wherein the carbon fiber is formed into a fibrous network, wherein the fibrous network comprises carbon deposited therein. The carbon fiber may undergo a FHT process, wherein micro-cracks are disposed in the carbon fiber. In various embodiments, the micro-cracks may be at least partially filled with un-heat-treated carbon via a final CVD process, wherein the final CVD process is performed at a temperature in the range of up to about 1,000° C. (1,832° F.) for a duration in the range from about 20 hours to about 100 hours. In various embodiments, the un-heat-treated carbon may be configured to prevent oxygen, moisture, and/or oxidation protection systems (OPS) chemicals from penetrating the carbon/carbon brake disk. In various embodiments, the final CVI/CVD process may be configured to increase the wear life of the carbon/carbon brake disk.
    Type: Grant
    Filed: May 4, 2020
    Date of Patent: July 26, 2022
    Assignee: Goodrich Corporation
    Inventors: James Warren Rudolph, John Linck