In Specific Atmosphere (except Vacuum Or Air) Patents (Class 264/29.6)
  • Patent number: 10468688
    Abstract: Provided are a carbon catalyst, an electrode, and a battery that exhibit excellent activity. A carbon catalyst according to one embodiment of the present invention has a carbon structure in which area ratios of three peaks fbroad, fmiddle, and fnarrow obtained by separating a peak in the vicinity of a diffraction angle of 26° in an X-ray diffraction pattern obtained by powder X-ray diffraction satisfy the following conditions (a) to (c): (a) fbroad: 75% or more and 96% or less; (b) fmiddle: 3.2% or more and 15% or less; and (c) fnarrow: 0.4% or more and 15% or less.
    Type: Grant
    Filed: November 30, 2015
    Date of Patent: November 5, 2019
    Assignees: NISSHINBO HOLDINGS INC., NATIONAL UNIVERSITY CORPORATION GUNMA UNIVERSITY
    Inventors: Yasuo Imashiro, Takeaki Kishimoto, Tetsutaro Sato, Jun-ichi Ozaki, Takuya Maie, Sayaka Kusadokoro
  • Patent number: 10450641
    Abstract: Methods of pre-densifying a metal wire containing superconductor materials are provided. Superconductor materials containing the pre-densified wires also are provided. The wires may be pre-densified by subjecting a metal wire that includes one or more filament cavities in which a superconductor precursor powder is disposed to a temperature and a first pressure for a time sufficient to densify the superconductor precursor powder to form a pre-densified metal wire, wherein the temperature is less than the melting point of the superconductor precursor powder, and the first pressure is sufficient, at the temperature, to compress at least a portion of the metal wire.
    Type: Grant
    Filed: July 27, 2016
    Date of Patent: October 22, 2019
    Assignee: Florida State University Research Foundation, Inc.
    Inventors: Maxime R. Matras, Eric Hellstrom, Ulf Trociewitz, Jianyi Jiang, David Larbalestier
  • Patent number: 9758382
    Abstract: Various implementations and embodiments relate to three-dimensional open cellular diamond micro-truss structures and methods.
    Type: Grant
    Filed: November 25, 2015
    Date of Patent: September 12, 2017
    Assignee: HRL Laboratories, LLC
    Inventors: Christopher S. Roper, William B. Barvosa-Carter, Alan J. Jacobsen, Tobias Schaedler
  • Patent number: 9382429
    Abstract: A preparation method of carbon modified filler is provided. The method is: putting the fillers into the reaction zone of a reactor, starting the first heating-up to 400-500° C. under the protective atmosphere at first, then introducing hydrogen after the heating-up; starting the second heating-up to 600-1200° C. after introducing hydrogen and simultaneously introducing the mixture of hydrogen and carbon source gas, keeping at the terminal temperature for 0.1-5 hours, introducing nitrogen and stopping heating after the reaction, cooling, and then getting the carbon modified filler. The above method can obtain a friction material with good mechanical properties, excellent friction and wear performances, stable friction coefficient at high temperature, good braking force and no heat recession.
    Type: Grant
    Filed: August 17, 2010
    Date of Patent: July 5, 2016
    Assignees: NANJING TAIWEI TECHNOLOGY CO., LTD., NANJING UNIVERSITY OF TECHNOLOGY
    Inventors: Xiaohua Lu, Yijun Shi, Ke Zhou, Changsong Wang, Wenjun Yao
  • Patent number: 9196904
    Abstract: A non-exfoliated graphite powder comprises highly oriented grain aggregates (HOGA) having a new morphology and surface chemistry. Methods for the production of such graphite powders as well as products comprising such novel graphite particles is also disclosed.
    Type: Grant
    Filed: February 3, 2010
    Date of Patent: November 24, 2015
    Assignee: Imerys Graphite & Carbon Switzerland SA
    Inventors: Michael E. Spahr, Curzio Nessi, Salvatore Stallone, Eberhard Waldhör, Grivei Eusebiu, Nicolas Probst
  • Patent number: 9186630
    Abstract: The present invention relates to a membrane comprising at least one molecular monolayer composed of low-molecular aromatics and cross-linked in the lateral direction, wherein the membrane has a thickness in the range from 1 to 200 nm and a perforation in the form of openings having a diameter in the range from 0.1 nm to 1 ?m, to a method for the production thereof, and to a use thereof.
    Type: Grant
    Filed: July 22, 2010
    Date of Patent: November 17, 2015
    Assignee: Universität Bielefeld
    Inventors: Armin Gölzhäuser, Klaus Edinger
  • Publication number: 20150076055
    Abstract: There is disclosed a method for manufacturing a carbon membrane in which a phenolic hydroxyl group is 10,000 ppm or less and whose separating function does not easily deteriorate even after exposure to acidic conditions. The method for manufacturing the carbon membrane has a drying step of drying a resin solution membrane including a phenol resin formed on a substrate; and a carbon membrane preparing step of heating the dried resin solution membrane at 600 to 900° C. in a vacuum or at 650 to 900° C. in a nitrogen atmosphere to carbonize the membrane, thereby obtaining the carbon membrane in which the concentration of the phenolic hydroxyl group is 10,000 ppm or less.
    Type: Application
    Filed: September 26, 2014
    Publication date: March 19, 2015
    Inventors: Akimasa ICHIKAWA, Shinji FUJISAKI
  • Publication number: 20150049415
    Abstract: An activated carbon for an electrode of a power storage device of the present invention has uniform consecutive macropores, and a pore size distribution centered within a range of 1.5 to 25 ?m, a specific surface area within a range of 1,500 to 2,300 m2/g, a micropore volume within a range of 0.4 to 1.0 mL/g, and an average micropore width within a range of 0.7 to 1.2 nm. Provided is an activated carbon for an electrode of a power storage device suitable for an electric double layer capacitor that has high capacitance during charging and discharging at high current density and excellent endurance against charging at a high voltage of 3 V or more and a lithium-ion capacitor having excellent endurance against charging at a high voltage of 4 V or more.
    Type: Application
    Filed: February 22, 2013
    Publication date: February 19, 2015
    Inventors: Hidehiko Tsukada, Kimiyasu Onda, Hiroshi Miyaji, Soshi Shiraishi, Yukiko Endo
  • Publication number: 20150042000
    Abstract: Provided is a method for preparing graphene paper, comprising the followings steps: placing a clean substrate into a reaction chamber, then introducing protective gas into the reaction chamber to purge out air in the reaction chamber; heating the substrate at a temperature of 800 to 1100° C.; continuously introducing carbonaceous material into the reaction chamber for 100 to 300 min, stopping the introduction of carbonaceous material into the reaction chamber, and at the same time stopping heating of the substrate, then cooling the substrate at a rate of 5 to 30° C./min, finally, stopping the introduction of the protective gas, thereby obtaining graphene paper on the surface of said substrate.
    Type: Application
    Filed: March 31, 2012
    Publication date: February 12, 2015
    Applicants: OCEAN'S KING LIGHTING SCIENCE & TECHNOLOGY CO., LTD., SHENZHEN OCEAN;S KING LIGHTING ENGINEERING CO., LTD
    Inventors: Mingjie Zhou, Xinsheng Yuan, Yaobing Wang
  • Patent number: 8951451
    Abstract: (Problem) In conventional method for producing artificial graphite, in order to obtain a product having excellent crystallinity, it was necessary to mold a filler and a binder and then repeat impregnation, carbonization and graphitization, and since carbonization and graphitization proceeded by a solid phase reaction, a period of time of as long as 2 to 3 months was required for the production and cost was high and further, a large size structure in the shape of column and cylinder could not be produced. In addition, nanocarbon materials such as carbon nanotube, carbon nanofiber and carbon nanohorn could not be produced.
    Type: Grant
    Filed: May 25, 2010
    Date of Patent: February 10, 2015
    Assignee: Incubation Alliance, Inc.
    Inventors: Kazuo Muramatsu, Masahiro Toyoda
  • Patent number: 8920691
    Abstract: Disclosed herein is a production method capable of efficiently producing a carbonized film wound into a roll without the occurrence of fusion bonding between the layers of the film. The method includes a carbonization step in which a polymer film wound around a core is placed in a heating furnace and carbonized by heat treatment to obtain a carbonized film wound around the core. The carbonization step is performed by increasing a temperature of the heat treatment from an initial temperature through a pyrolysis onset temperature to a pyrolysis end temperature. In the carbonization step, the heating furnace is decompressed when the temperature of the heat treatment is lower than the pyrolysis onset temperature, and after the temperature of the heat treatment reaches the pyrolysis onset temperature, the heating furnace is not decompressed or the heating furnace is decompressed so that an absolute pressure in the heating furnace is in a range of 21.3 kPa to 101.29 kPa.
    Type: Grant
    Filed: March 9, 2011
    Date of Patent: December 30, 2014
    Assignee: Kaneka Corporation
    Inventors: Makoto Mishiro, Yasushi Nishikawa, Yusuke Ohta, Takashi Inada
  • Publication number: 20140332993
    Abstract: With a manufacturing method of a graphite sheet, a cavity-forming sheet having a mesh structure or a nonwoven fabric structure is firstly impregnated with polyamide acid and then molded into a sheet. The molded sheet is then heat treated to imidize polyamide acid so as to produce a polyimide sheet composed of polyimide and the cavity-forming sheet disposed in polyimide. The polyimide sheet is then fired in a non-oxidizing atmosphere to pyrolyze the polyimide so as to produce the graphite sheet. The cavity-forming sheet is made of material which maintains a shape thereof when the polyimide sheet is produced and which gasifies and loses at least 80% of its weight when the polyimide is pyrolyzed.
    Type: Application
    Filed: March 5, 2013
    Publication date: November 13, 2014
    Inventors: Tatsuhiro Ooshiro, Norihiro Kawamura
  • Publication number: 20140327163
    Abstract: A process for obtaining granules for manufacturing a silicon carbide based sintered product, includes a) mixing a powder of silicon carbide SiC particles, whose average diameter d50 is at least about 2 micrometers with a powder of a boron compound particles, whose average diameter d50 is at least about 2 micrometers, the SiC particles content being more than 90% by weight of the powder mixture; b) co-milling the powder mixture until the overall average diameter d50 of the resulting particles is between 0.3 and 1 micrometers; c) chemically treating the powder mixture by base solution and acid wash; d) mixing the powder mixture of c) with 1 to 10% by weight, based upon the silicon carbide content, of a carbon containing resin having a water miscibility of more than 10:50, as measured according to the ISO8989 standard, and e) spray-drying the resulting mixture of d), to generate the granules.
    Type: Application
    Filed: October 12, 2012
    Publication date: November 6, 2014
    Inventors: Vidar Johannessen, Jostein Mosby
  • Patent number: 8845950
    Abstract: A method to manufacture a carbon fiber electrode comprises synthesizing polyamic acid (PAA) as a polyimide (PI) precursor from pryomellitic dian hydride (PMDA) and oxydianiline (ODA) as monomers and triethylamine (TEA) as a catalyst, adding dimethylformamide (DMF) to the polyamic acid (PAA) solution to prepare a spinning solution and subjecting the spinning solution to electrostatic spinning at a high voltage to obtain a PAA nanofiber paper, converting the PAA nanofiber paper into a polyimide (PI) nanofiber paper by heating, and converting the polyimide (PI) nanofiber paper into a carbon nanofiber (CNF) paper by heating under an Ar atmosphere. Also, the method to manufacture a polyimide carbon nanofiber electrode and/or a carbon nanotube composite electrode may utilize carbon nanofibers having diameters that are lessened by optimizing electrostatic spinning in order to improve spinnability.
    Type: Grant
    Filed: September 3, 2008
    Date of Patent: September 30, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Dae Wook Park, Hyong Soo Noh, Hideo Nojima, Thi Xuyen Nguyen, Chul Ho Song, Young Hee Lee
  • Patent number: 8758656
    Abstract: In order to obtain a graphite film having an excellent thermal diffusivity, a high density, and excellent flatness without flaws, recesses and wrinkles on the surface, the process for producing a graphite film according to the present invention comprises the graphitization step for a raw material film made of a polymer film and/or a carbonized polymer film and/or the post-planar pressurization step for the film in this order to prepare a graphite film, wherein the graphitization step is a step of thermally treating two or more stacked raw material films at a highest temperature of 2,000° C. and includes a method of electrically heating the raw material films themselves and/or a method of thermally treating the films while applying pressure to the films planarly, and the post-planar pressurization step includes a method of planarly pressurizing the one raw material film or the multiple stacked raw material films after graphitization by single-plate press or vacuum press.
    Type: Grant
    Filed: March 9, 2011
    Date of Patent: June 24, 2014
    Assignee: Kaneka Corporation
    Inventors: Yasushi Nishikawa, Shuhei Wakahara, Mutsuaki Murakami
  • Patent number: 8747796
    Abstract: A carbon substrate, method, and a system for manufacturing the same. The method includes forming an oxidized carbon precursor fiber preweb comprising oxidized carbon precursor staple fibers and binder staple fibers; impregnating the oxidized carbon precursor fiber preweb with a slurry including a thermosetting resin and carbonaceous fillers and drying the resulting preweb to obtain an oxidized carbon precursor fiber web; applying heat and pressure to the oxidized and impregnated carbon precursor fiber web, to cure the thermosetting resin and press the oxidized carbon precursor fiber web; and heating the oxidized carbon precursor fiber web in an inert atmosphere, thereby stabilizing and carbonizing the oxidized carbon precursor staple fibers to obtain a carbon substrate. The present invention may utilize a combination of carbon precursor staple fibers in an oxidized form with low ductility and high stiffness; and binder staple fibers composed of a polymer resin.
    Type: Grant
    Filed: May 20, 2011
    Date of Patent: June 10, 2014
    Assignee: Hyup Jin I&C Co., Ltd.
    Inventors: Chang Woo Lee, Eun Sook Lee, Jy Young Jyoung, Do Hun Kim, Yong Won Jin, Jung Mi Gwak, Young Uk Jyoung
  • Patent number: 8703027
    Abstract: Methods and compositions relate to manufacturing a carbonaceous article from particles that have pitch coatings. Heating the particles that are formed into a shape of the article carbonizes the pitch coatings. The particles interconnect with one another due to being formed into the shape of the article and are fixed together where the pitch coatings along adjoined ones of the particles contact one another and are carbonized to create the article.
    Type: Grant
    Filed: October 31, 2011
    Date of Patent: April 22, 2014
    Assignee: Phillips 66 Company
    Inventor: Zhenhua Mao
  • Publication number: 20140103558
    Abstract: A method allows for preparation of CNT nanocomposites having improved mechanical, electrical and thermal properties. Structured carbon nanotube forms such as sheet, yarn, and tape are modified with ?-conjugated conductive polymers, including polyaniline (PANI), fabricated by in-situ polymerization. The PANI modified CNT nanocomposites are subsequently post-processed to improve mechanical properties by hot press and carbonization.
    Type: Application
    Filed: August 24, 2013
    Publication date: April 17, 2014
    Inventors: Jae-Woo Kim, Emilie J. Siochi, Kristopher E. Wise, John W. Connell, Yi Lin, Russell A. Wincheski, Dennis C. Working
  • Publication number: 20140099447
    Abstract: A method and apparatus for treating waste materials comprising, particulating the waste materials into discrete particles, heating and drying the particles in a non-oxidizing atmosphere in a drier at a temperature in the range of 800° to 860° C. for carbonizing the particles, crushing the carbonized particles and leaching the crushed carbonized particles in an acid solution for dissolution of heavy metals into the solution, separating the leach solution containing heavy metal from the carbonized particles, adding to the carbonized particles particulate sodium hydroxide, silica, feldspar and limestone in a ratio of 100:0.3-0.5:8-12:2-4, mixing said particles with 15 to 18% by weight water to form a wet mixture and continuously extruding the wet mixture to form an elongated continuous extrusion, severing the elongated extrusion into blocks or planks of predetermined length, drying the blocks or planks and heating the dried blocks or planks in a kiln at a temperature in the range of 1200° to 1300° C.
    Type: Application
    Filed: February 17, 2012
    Publication date: April 10, 2014
    Applicant: GOOD MORNING ENTERPRISES INC.
    Inventors: Jay Kim, Wesley Tse
  • Publication number: 20140099505
    Abstract: The present invention relates to compositions comprising esterified lignin and poly(lactic acid). In various embodiments, the present invention provides fibers comprising the esterified lignin and poly(lactic acid) blend, carbon fibers made therefrom, and methods of making the fiber and the carbon fibers.
    Type: Application
    Filed: October 8, 2013
    Publication date: April 10, 2014
    Applicant: Iowa State University Research Foundation, Inc.
    Inventors: Mahendra Thunga, Keke Chen, Michael Richard Kessler
  • Patent number: 8673188
    Abstract: A carbon/carbon part and a process for making carbon/carbon parts is provided. The process involves forming steps, carbonization steps and densification steps. The forming steps may include needling fibrous layers to form fibers that extend in three directions. The carbonization steps may include applying pressure to increase the fiber volume ratio of the fibrous preform. The densification steps may include filling the voids of the fibrous preform with a carbon matrix.
    Type: Grant
    Filed: February 14, 2006
    Date of Patent: March 18, 2014
    Assignee: Goodrich Corporation
    Inventors: John S. Linck, Chris T. Kirkpatrick
  • Publication number: 20140056795
    Abstract: The invention provides a process for manufacturing high density boron carbide by pressureless sintering, enabling to create sintered products of complex shapes and high strength. The robust process of the invention enables to employ low-cost raw powders.
    Type: Application
    Filed: November 1, 2013
    Publication date: February 27, 2014
    Applicant: Rafael-Armament Development Authority Ltd.
    Inventors: Shimshon Bar-ziv, Yehoshua Hachamo, David Gorni, Zohar Ophir, Itamar Gutman, Joseph Frey, Zvi Nisenholz
  • Patent number: 8585944
    Abstract: An ordered open-cellular carbon microstructure and a methods for forming the ordered open-cellular carbon microstructure capable of greatly improving the carbon yield (remaining mass % after carbonization) of an open-cellular polymer material. In one embodiment, the method starts with providing an ordered open-cellular polymer template material. The polymer template material is immersed in a reservoir containing a liquid monomer solution, wherein the liquid monomer solution swells the polymer material. Then the polymer template material is removed from the reservoir containing liquid monomer solution. Excess liquid monomer solution is removed from the polymer template material. The liquid monomer solution absorbed into the polymer template material is polymerized forming a copolymer material by irradiating the template material with ultraviolet (UV) light in a nitrogen environment.
    Type: Grant
    Filed: October 10, 2007
    Date of Patent: November 19, 2013
    Assignee: HRL Laboratories, LLC
    Inventor: Alan J. Jacobsen
  • Publication number: 20130221266
    Abstract: A preparation method of carbon modified filler is provided. The method is: putting the fillers into the reaction zone of a reactor, starting the first heating-up to 400-500° C. under the protective atmosphere at first, then introducing hydrogen after the heating-up; starting the second heating-up to 600-1200° C. after introducing hydrogen and simultaneously introducing the mixture of hydrogen and carbon source gas, keeping at the terminal temperature for 0.1-5 hours, introducing nitrogen and stopping heating after the reaction, cooling, and then getting the carbon modified filler. The above method can obtain a friction material with good mechanical properties, excellent friction and wear performances, stable friction coefficient at high temperature, good braking force and no heat recession.
    Type: Application
    Filed: August 17, 2010
    Publication date: August 29, 2013
    Inventors: Xiaohua Lu, Yijun Shi, Ke Zhou, Changsong Wang, Wejun Yao
  • Publication number: 20130180393
    Abstract: A device and process of forming a defensive, ceramic based, applique armor for covering and protecting a substrate which may be exposed to attack by projectiles, the applique armor having a flat or curved armor plate formed of ceramic material and having a first surface and a second surface; wherein the ceramic material being formed of silicon carbide with carbon fibers (C/SiC) and the ceramic material has a plurality of holes on at least one of the surfaces; the holes having a diameter smaller than an anticipated bullet or ammunition projectile and the holes being set obliquely relative to at least one surface, whereby the device and process provide holes formed by press molding, boring, drilling, or combinations thereof.
    Type: Application
    Filed: July 11, 2012
    Publication date: July 18, 2013
    Applicant: SGL CARBON SE
    Inventors: ANDREAS KIENZLE, ROBERTA HINES, MICHAEL MAXWELL
  • Patent number: 8414805
    Abstract: Processes for producing porous carbon foam composites and activated carbon/carbon (AC/C) composites from polyimide precursors, activated carbon powder, and optionally carbon fiber and other additives. The AC/C composites may be used for carbon electrodes in electrochemical capacitors.
    Type: Grant
    Filed: December 1, 2008
    Date of Patent: April 9, 2013
    Assignee: ElectroMaterials, Inc.
    Inventor: Jing Wang
  • Patent number: 8366979
    Abstract: A carbon monolith includes a robust carbon monolith characterized by a skeleton size of at least 100 nm, and a hierarchical pore structure having macropores and mesopores.
    Type: Grant
    Filed: January 21, 2011
    Date of Patent: February 5, 2013
    Assignees: UT-Battelle, LLC, University of Tennessee Research Foundation
    Inventors: Sheng Dai, Georges A. Guiohon, Chengdu Liang
  • Patent number: 8349231
    Abstract: This invention relates to a process for the production of a shaped composite material and the material obtained through that process. In particular it relates to a process for obtaining a disk of composite ceramic material for disc brakes in which the friction coefficient is varied by varying the composition of the surface layer.
    Type: Grant
    Filed: December 30, 2004
    Date of Patent: January 8, 2013
    Assignee: Brembo Ceramic Brake Systems S.p.A.
    Inventors: Ralf Siegfried Goller, Marco Orlandi, Riccardo Piavani
  • Publication number: 20120313271
    Abstract: A method of producing carbon-based sorbent by (a) mixing carbon-containing raw materials with group I, II, and/or III oxides and/or hydroxides; (b) carbonizing at low temperatures of between 100° C. and 280° C.; followed by carbonizing at high temperatures of between 280° C. and 500° C., whereby simultaneously dehydrating the hydrates and releasing superheated dry steam at high temperature exceeding 500° C.; and (c) directing the superheated dry steam against the direction of the feed flow.
    Type: Application
    Filed: June 10, 2012
    Publication date: December 13, 2012
    Inventor: Stanislaw ROGUT
  • Patent number: 8304465
    Abstract: A method for the preparation of high strength air-dried organic aerogels. The method involves the sol-gel polymerization of organic gel precursors, such as resorcinol with formaldehyde (RF) in aqueous solvents with R/C ratios greater than about 1000 and R/F ratios less than about 1:2.1. Using a procedure analogous to the preparation of resorcinol-formaldehyde (RF) aerogels, this approach generates wet gels that can be air dried at ambient temperatures and pressures. The method significantly reduces the time and/or energy required to produce a dried aerogel compared to conventional methods using either supercritical solvent extraction. The air dried gel exhibits typically less than 5% shrinkage.
    Type: Grant
    Filed: January 18, 2006
    Date of Patent: November 6, 2012
    Assignee: Lawrence Livermore National Security, LLC
    Inventors: Paul R. Coronado, Joe H. Satcher, Jr.
  • Patent number: 8236273
    Abstract: There is disclosed a method of producing a pre-oxidation fiber in the production of the pre-oxidation fiber by subjecting a polyacrylic precursor fiber to pre-oxidation processing in an oxidizing atmosphere, including shrinking the precursor fiber as a pretreatment of pre-oxidation at a load of 0.58 g/tex or less in the temperature range of 220 to 260° C. under conditions in which the degree of cyclization (I1620/I2240) of the precursor fiber measured by a Fourier transform infrared spectrophotometer (FT-IR) does not exceed 7%, initially-drawing the precursor fiber at a load of 2.7 to 3.5 g/tex in an oxidizing atmosphere at 230 to 260° C. in the ranges of the degree of cyclization of not exceeding 27% and of the density of not exceeding 1.2 g/cm3, and then subjecting the pre-oxidation fiber to pre-oxidation treatment.
    Type: Grant
    Filed: December 10, 2008
    Date of Patent: August 7, 2012
    Assignee: Toho Tenax Co., Ltd.
    Inventors: Taro Oyama, Rie Kawahito, Hiroshi Kimura
  • Patent number: 8222171
    Abstract: A method for the production of a ceramic substrate for a semiconductor component, includes the steps of producing paper containing at least cellulose fibers, as well as a filler to be carbonized and/or SiC, pyrolizing the produced paper, and siliconizing the pyrolyzed paper.
    Type: Grant
    Filed: July 13, 2007
    Date of Patent: July 17, 2012
    Assignee: Schunk Kohlenstofftechnik GmbH
    Inventors: Marco Ebert, Martin Henrich, Andreas Lauer, Gotthard Nauditt, Thorsten Scheibel, Roland Weiss
  • Publication number: 20120168975
    Abstract: A method of processing a porous article includes distributing a blended material that includes an electrically conductive material and a binder into a cavity of a mold that is at a temperature below a curing temperature of the binder. The electrically conductive material is formed from particles of the electrically conductive material that have a size distribution such that 10 vol % of the particles are less than 12 micrometers in diameter, 50 vol % of the particles are less than 27 micrometers in diameter, and 90 vol % of the particles are less than 53 micrometers. The blended material is compressed within the cavity under a molding pressure, and the mold is heated to a curing temperature of the binder to form a molded article.
    Type: Application
    Filed: November 23, 2009
    Publication date: July 5, 2012
    Applicant: UTC Power Corporation
    Inventors: Michael L. Perry, Paravastu Badrinarayanan, Glenn Michael Allen, Steven W. Gronda
  • Patent number: 8206624
    Abstract: A method for producing carbon nanotubes uses a polymer as a raw material to undergo in situ thermal decomposition. The method includes steps of mixing the polymer and metallic catalyst through a multiple heating stage process of in-situ thermal decomposition to carbonize the polymer and release carbon elements to produce carbon nanotubes. Advantages of the present invention include easy to prepare, low temperature in manipulation, low production cost, and high safety.
    Type: Grant
    Filed: February 7, 2009
    Date of Patent: June 26, 2012
    Assignee: National Chung Cheng University
    Inventors: Yuan-Yao Li, Chao-Wei Huang
  • Publication number: 20120107211
    Abstract: A process for manufacturing high density boron carbide by pressureless sintering, enabling to create sintered products of complex shapes and high strength. The process comprises mixing raw boron carbide powder with carbon precursor, such as a polysaccharide, compacting the mixture to create an object of the desired shape, and finally carbonizing and sintering the object at higher temperatures.
    Type: Application
    Filed: January 9, 2012
    Publication date: May 3, 2012
    Applicant: RAFAEL-ARMAMENT DEVELOPMENT AUTHORITY LTD.
    Inventors: Shimshon Bar-ziv, Yehoshua Hachamo, David Gorni, Zohar Ophir, Itamar Gutman, Joseph Frey, Zvi Nisenholz
  • Publication number: 20120088159
    Abstract: In an exemplary method, a nano-architectured carbon structure is fabricated by forming a unit (e.g., a film) of a liquid carbon-containing starting material. A surface of the unit is nano-molded using a durable mold (122) that is pre-formed with a pattern of nano-concavities corresponding to a desired pattern of nano-features to be formed by the mold on the surface of the unit. After nano-molding the surface of the unit, the first unit is stabilized to render the unit and its formed nano-structures capable of surviving downstream steps. The mold is removed from the first surface to form a nano-molded surface of a carbonization precursor (152). The precursor is carbonized in an inert-gas atmosphere at a suitable high temperature to form a corresponding nano-architectured carbon structure (62). A principal use of the nano-architectured carbon structure is a carbon electrode used in, e.g., Li-ion batteries, supercapacitors, and battery-supercapacitor hybrid devices.
    Type: Application
    Filed: June 28, 2010
    Publication date: April 12, 2012
    Inventors: Jayan Thomas, Nasser N. Peyghambarian, Andre P. Persoons, Palash Gangopadhyay, Sujung Feilen
  • Publication number: 20120058337
    Abstract: An object of the present invention is to provide a pitch carbon fiber having a decreased occurrence of cracking along the direction of the fiber axis of the pitch carbon fiber, which has conventionally occurred in a melt blowing method, and having high thermal conductivity. The invention is directed to a pitch carbon fiber having a melt mark recognized in the fiber corresponding to 60 to less than 100% of the cross-section of the fiber, and having a lattice spacing (d 002 value) of 0.3362 nm or less in the graphite layer and a crystallite size (Lc) of 60 nm or more derived from the thicknesswise direction, as determined by X-ray diffractometry. The pitch carbon fiber can be produced under specific conditions for spinning and infusibilization.
    Type: Application
    Filed: December 17, 2009
    Publication date: March 8, 2012
    Applicant: TEIJIN LIMITED
    Inventors: Hiroshi Sakurai, Hiroshi Hara, Shoichi Takagi
  • Publication number: 20120045384
    Abstract: (Problem) A porous carbon material having excellent graphite crystallinity, good carrier mobility and proper porosity, a porous carbon material having edges of carbon hexagonal planes located on outer surfaces of particle and structure, and flaky graphite being similar to graphene are produced. (Means to Solve) By subjecting a carbon material, in which a closed-pore-ratio and an amount of remaining hydrogen in the material are set to be within a proper range, to hot isostatic pressing treatment, a vapor phase growth reaction of graphite is generated in closed pores as nuclei using hydrogen and hydrocarbon generated from the carbon material, thereby producing a large amount of targeted porous carbon material at low cost. Flaky graphite being similar to graphene is produced by applying physical impact to the obtained porous carbon material or by generating a graphite intercalation compound using the porous carbon material as a host and then quickly heating the compound.
    Type: Application
    Filed: May 1, 2010
    Publication date: February 23, 2012
    Inventors: Kazuo Muramatsu, Masahiro Toyoda
  • Publication number: 20110286910
    Abstract: A carbon substrate, method, and a system for manufacturing the same. The method includes forming an oxidized carbon precursor fiber preweb comprising oxidized carbon precursor staple fibers and binder staple fibers; impregnating the oxidized carbon precursor fiber preweb with a slurry including a thermosetting resin and carbonaceous fillers and drying the resulting preweb to obtain an oxidized carbon precursor fiber web; applying heat and pressure to the oxidized and impregnated carbon precursor fiber web, to cure the thermosetting resin and press the oxidized carbon precursor fiber web; and heating the oxidized carbon precursor fiber web in an inert atmosphere, thereby stabilizing and carbonizing the oxidized carbon precursor staple fibers to obtain a carbon substrate. The present invention may utilize a combination of carbon precursor staple fibers in an oxidized form with low ductility and high stiffness; and binder staple fibers composed of a polymer resin.
    Type: Application
    Filed: May 20, 2011
    Publication date: November 24, 2011
    Inventors: Chang Woo Lee, Eun Sook Lee, Jy Young Jyoung, Do Hun Kim, Yong Won Jin, Jung Mi Gwak, Young Uk Jyoung
  • Patent number: 8058197
    Abstract: This invention provides carbon composite materials, which comprise metal carbide particles, at least the particle surfaces or the entirety of which are metal carbides, synthesized in situ from a metal source, i.e., at least one member selected from the group comprising metal particles, metal oxide particles, and composite metal oxide particles, and a carbon source, i.e., a thermosetting resin, dispersed in a carbon, carbon fiber, or carbon/carbon fiber matrix, and contain no free metal particles. This invention also provides a method for producing such composite carbon materials, which enables the production of carbon composite materials having a high coefficient of friction, high thermostability, and abrasion resistance.
    Type: Grant
    Filed: July 23, 2010
    Date of Patent: November 15, 2011
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Shigeru Ichikawa, Sumio Kamiya, Koji Yamada, Hironori Sasaki
  • Patent number: 8052903
    Abstract: A defect-free vitreous carbon material having a three-dimensional (x,y,z) size in which each of the x, y and z dimensions exceeds twelve millimeters. A process of making such vitreous carbon material employs a three-dimensional fiber mesh that vaporizes at elevated temperature, in which the mesh is impregnated with a polymerizable resin and thereafter the resin is cured. During the initial stage(s) of pyrolysis, the mesh volatilizes to yield a residual network of passages in the cured resin body that thereafter allows gases to escape during pyrolysis of the cured resin material to form the vitreous carbon product. As a result, it is possible to form defect-free vitreous carbon material of large size, suitable for use in structural composites, and product articles such as sealing members, brake linings, electric motor brushes, and bearing members.
    Type: Grant
    Filed: December 25, 2006
    Date of Patent: November 8, 2011
    Inventor: Christopher Whitmarsh
  • Patent number: 8052918
    Abstract: A method of producing a carbon-based material having an activated surface includes: (a) mixing an elastomer and a carbon material, and dispersing the carbon material by applying a shear force to obtain a composite elastomer; and (b) heat-treating the composite elastomer at a temperature for vaporising an elastomer to vaporize the elastomer in the composite elastomer.
    Type: Grant
    Filed: July 19, 2005
    Date of Patent: November 8, 2011
    Assignee: Nissin Kogyo Co., Ltd.
    Inventors: Akira Magario, Toru Noguchi
  • Patent number: 8034266
    Abstract: A process for the production of an open-cell carbon foam from a metallic salt of a lignosulfonate is described. The process includes heating the metallic salt of a lignosulfonate from ambient temperature to a maximum temperature, greater than about 250° C., at a rate sufficiently slow as to provide for essentially uniform heating of the lignin derived material. Heating of the lignin derived material is performed in a non-oxidizing atmosphere having a pressure greater than about 100 psig. The resultant carbon foam can subsequently be optionally subjected to carbonization or graphitization temperatures as desired. The resultant carbon foam has a regular open-cell structure. Densities of the carbon foam products are commonly in the range of about 0.1 g/cm3 to 0.2 g/cm3. The carbon foams may also exhibit compressive strengths of up to about 200 psi. The carbon foam materials potentially have utility as lightweight thermal barriers and in many other of the applications associated with carbon foams.
    Type: Grant
    Filed: August 3, 2004
    Date of Patent: October 11, 2011
    Assignee: Touchstone Research Laboratory, Ltd.
    Inventors: Drew M. Spradling, Doug R. Amie
  • Publication number: 20110159767
    Abstract: A nonwoven fabric which contains pitch-based carbon fibers having a high elongation and a high elastic modulus which are not attained in the prior art and is obtained by improving the tensile elongation of carbon fibers derived from mesophase pitch, a felt obtained from the nonwoven fabric, and production processes therefore. The nonwoven fabric contains pitch-based carbon fibers, wherein the pitch-based carbon fibers have (i) an average fiber diameter (D1) measured by an optical microscope of more than 2 ?m and 20 ?m or less, (ii) a percentage of the degree of fiber diameter distribution (S1) to average fiber diameter (D1) measured by an optical microscope of 3 to 20%, (iii) a tensile elastic modulus of 80 to 300 GPa and (iv) a tensile elongation of 1.4 to 2.5%.
    Type: Application
    Filed: December 2, 2010
    Publication date: June 30, 2011
    Applicant: TEIJIN LIMITED
    Inventors: Hiroshi SAKURAI, Hiroshi HARA, Hiroki SANO, Shuhei ONOUE, Yukio NAKAMOTO, Yoshio OSAWA, Shoichi TAKAGI
  • Publication number: 20110097593
    Abstract: (Task) A PTFE-based sliding material, wherein the porous sintered layer on the surface of backing metal is impregnated with baked PTFE, and occasionally, with one or both of the solid lubricant and wear-resistant additive together with fibrous PTFE, is used for a bearing of air-conditioner. Resistance of the bearing for local wear is required. Such wear resistance is to be enhanced. (Solution Means) Carbides of oligomer or polymer 2 are incorporated in the entangled structure of fibrous PTFE 1.
    Type: Application
    Filed: October 26, 2009
    Publication date: April 28, 2011
    Applicant: TAIHO KOGYO CO., LTD.
    Inventors: Masaru Yoshikawa, Akira Sawamoto, Hiroshi Ueda
  • Patent number: 7919024
    Abstract: Disclosed are processes for producing monolithic and metal doped monolithic porous carbon disks from prepolymer organic precursors in the powder form composed of either or both polyimide and polybenzimidazole. The powders are consolidated (compressed) into disks and then pyrolyzed to form the desired porous carbon disk. Porous carbon-carbon composite disks are also prepared by adding carbon to the prepolymer organic precursors.
    Type: Grant
    Filed: August 11, 2005
    Date of Patent: April 5, 2011
    Assignee: ElectroMaterials, Inc.
    Inventor: Jing Wang
  • Patent number: 7850942
    Abstract: A method of making mesoporous carbon beads comprises steps of providing a nucleophilic component such as phenolic compound or phenol condensation prepolymer, dissolving the nucleophilic component in a pore former, together with at least one electrophilic cross-linking agent such as formaldehyde, paraformaldehyde, furfural and hexamethylene tetramine, dispersing the resulting solution into a mineral oil to form beads, condensing both the component and the agent in the presence of the pore former to form beads of porous resin, removing the beads from the mineral oil and carbonizing the beads to form mesoporous carbon beads.
    Type: Grant
    Filed: May 7, 2007
    Date of Patent: December 14, 2010
    Assignee: British American Tobacco (Investments) Ltd.
    Inventors: Stephen Robert Tennison, Oleksundr Prokopovych Kozynchenko, Volodymyr Vasyljovych Strelko, Andrew John Blackburn
  • Patent number: 7824650
    Abstract: A graphitizable carbon foam having enhanced directional thermal conductivity is provided. The mesophase portions of a mesophase pitch are aligned with each other to create an oriented mesophase pitch, which is then foamed to provide an oriented pitch foam. The pitch foam can be heated to carbonize the pitch thereby forming an oriented carbon foam. The carbon foam can be further heated to provide an oriented graphite foam.
    Type: Grant
    Filed: February 21, 2007
    Date of Patent: November 2, 2010
    Assignee: GrafTech International Holdings Inc.
    Inventors: Peter G. Stansberry, Leonard Singer
  • Patent number: 7799250
    Abstract: Ceramic friction linings comprising a material consisting essentially of metal oxides which are present in the form of a sintered ceramic or in the form of ceramic particles bound by carbon and/or carbides, processes for producing them and their use in combination with ceramic friction bodies, in particular for high-performance brakes.
    Type: Grant
    Filed: February 16, 2006
    Date of Patent: September 21, 2010
    Assignee: Audi AG
    Inventors: Ronald Huener, Moritz Bauer, Peter Winkelmann
  • Patent number: 7767183
    Abstract: Methods for the production of carbon foam from swelling coals that do not require the use of high process pressures, oxidized coal, devolatized coal, or high-strength, foam expansion confining molds are described. In some embodiments, a comminuted swelling bituminous coal is heated to a first elevated temperature sufficient to result in the coal particles softening and melting together to form a substantially homogeneous open cell plastic carbon material. The substantially homogeneous open cell plastic carbon material may then be heated to a second elevated temperature at a slow rate to form carbon foam. In some embodiments, the resulting carbon foam may be heated to a higher third elevated temperature. The resulting carbon foam may be subsequently heated to elevated temperatures as great as 3200° C. or more.
    Type: Grant
    Filed: November 20, 2006
    Date of Patent: August 3, 2010
    Assignee: Touchstone Research Laboratory, Ltd.
    Inventor: Thomas M. Matviya