With Carbide Patents (Class 252/504)
  • Patent number: 9951952
    Abstract: A method of making a hot surface igniter is described. A silicon carbide composition that includes both fines fraction and a coarse fraction is sintered in a nitrogen and argon reducing atmosphere in a manner that controls the incorporation of nitrogen with in the lattice of recrystallized silicon carbide. The controlled incorporation of nitrogen in the lattice provides enhanced control over heating and electrical properties, while simultaneously achieving a lower surface area fully recrystallized structure for oxidation resistance and long service life.
    Type: Grant
    Filed: October 15, 2014
    Date of Patent: April 24, 2018
    Assignee: Specialized Component Parts Limited, Inc.
    Inventors: Craig Andrew Willkens, Frederick Taylor Fernandez
  • Publication number: 20150132660
    Abstract: The present invention concerns electrode materials capable of redox reactions by electron and alkali-ion exchange with an electrolyte. The applications are in the field of primary (batteries) or secondary electrochemical generators, supercapacitors and light modulating systems of the electrochromic type.
    Type: Application
    Filed: January 22, 2015
    Publication date: May 14, 2015
    Inventors: Nathalie Ravet, Simon Besner, Martin Simoneau, Alain Vallee, Michel Armand, Jean-Francois Magnan, Karim Zaghib
  • Patent number: 8962504
    Abstract: The disclosure provides novel graphene-reinforced ceramic composites and methods for making such composite materials.
    Type: Grant
    Filed: July 27, 2012
    Date of Patent: February 24, 2015
    Assignee: Arizona Board of Regents on Behalf of The University of Arizona
    Inventors: Erica L. Corral, Luke S. Walker, Victoria R. Marotto, Mohammad A. Rafiee, Nikhil Koratkar
  • Patent number: 8906557
    Abstract: Anode active materials and methods of preparing the same are provided. One anode active material includes a carbonaceous material capable of improving battery cycle characteristics. The carbonaceous material bonds to and coats metal active material particles and fibrous metallic particles to suppress volumetric changes.
    Type: Grant
    Filed: March 22, 2007
    Date of Patent: December 9, 2014
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Gue-sung Kim, Yong-nam Ham, Han-su Kim, Dong-min Im
  • Publication number: 20140217330
    Abstract: A metal oxide-carbon composite includes a carbon aerogel with an oxide overcoat. The metal oxide-carbon composite is made by providing a carbon aerogel, immersing the carbon aerogel in a metal oxide sol under a vacuum, raising the carbon aerogel with the metal oxide sol to atmospheric pressure, curing the carbon aerogel with the metal oxide sol at room temperature, and drying the carbon aerogel with the metal oxide sol to produce the metal oxide-carbon composite. The step of providing a carbon aerogel can provide an activated carbon aerogel or provide a carbon aerogel with carbon nanotubes that make the carbon aerogel mechanically robust.
    Type: Application
    Filed: January 15, 2014
    Publication date: August 7, 2014
    Inventors: Marcus A. WORSLEY, Thomas Yong-Jin HAN, Joshua D. KUNTZ, Octavio CERVANTES, Alexander E. GASH, Theodore F. BAUMANN, Joe H. SATCHER, Jr.
  • Patent number: 8778230
    Abstract: A subject-matter of the invention is a novel process for the preparation of sulphur-modified monolithic porous carbon-based materials by impregnation with a strong sulphur-based acid, the materials capable of being obtained according to this process and the use of these materials with improved supercapacitance properties to produce electrodes intended for energy storage systems. Electrodes composed of sulphur-modified monolithic porous carbon-based materials according to the invention and lithium batteries and supercapacitors having such electrodes also form part of the invention.
    Type: Grant
    Filed: November 11, 2011
    Date of Patent: July 15, 2014
    Assignee: Hitchinson
    Inventors: David Ayme-Perrot, Marie Dieudonné, Philippe Sonntag, Anne-Caroline Pasquier
  • Patent number: 8679679
    Abstract: A composite material having utility as an anode for lithium ion batteries comprises silicon, a transition metal, a ceramic and an electrically conductive diluent such as carbon. In particular instances, the ceramic is electrically conductive, and may comprise vanadium carbide or tungsten carbide. The transition metal may, in some instances, comprise iron. The material may be fabricated by grinding together a starting mixture of the components, and grinding may be accomplished in a high impact ball milling process, and the grinding step may cause partial alloying of the silicon with the metal and/or carbon. Further disclosed is a method for making the material as well as electrodes which incorporate the material.
    Type: Grant
    Filed: January 8, 2009
    Date of Patent: March 25, 2014
    Assignee: A123 Systems, Inc.
    Inventors: Pu Zhang, Suresh Mani, Junqing Ma, Liya Wang, Jun Q. Chin
  • Publication number: 20130344390
    Abstract: A composition of graphene-based nanomaterials and a method of preparing the composition are provided. A carbon-based precursor is dissolved in water to form a precursor suspension. The precursor suspension is placed onto a substrate, thereby forming a precursor assembly. The precursor assembly is annealed, thereby forming the graphene-based nanomaterials. The graphene-based nanomaterials are crystallographically ordered at least in part and configured to form a plurality of diffraction rings when probed by an incident electron beam. In one aspect, the graphene-based nanomaterials are semiconducting. In one aspect, a method of engineering an energy bandgap of graphene monoxide generally includes providing at least one atomic layer of graphene monoxide having a first energy bandgap, and applying a substantially planar strain is applied to the graphene monoxide, thereby tuning the first energy band gap to a second energy bandgap.
    Type: Application
    Filed: June 12, 2013
    Publication date: December 26, 2013
    Inventors: Junhong Chen, Marija Gajdardziska-Josifovska, Carol Hirschmugl, Eric Mattson, Haihui Pu, Michael Weinert
  • Patent number: 8603243
    Abstract: A method of: supplying sources of carbon and silicon into a chemical vapor deposition chamber; collecting exhaust gases from the chamber; performing mass spectrometry on the exhaust gases; and correlating a partial pressure of a carbon species in the exhaust gases to a carbon:silicon ratio in the chamber.
    Type: Grant
    Filed: July 31, 2008
    Date of Patent: December 10, 2013
    Assignee: The United States of America, as represented by the Secretary of the Navy
    Inventors: Brenda L VanMil, Kok-Keong Lew, Rachael L Myers-Ward, Charles R. Eddy, Jr., David Kurt Gaskill
  • Publication number: 20130260150
    Abstract: The present disclosure relates to ground expanded graphite agglomerate compositions, methods for making such agglomerates, their use as conductive additive, and conductive composites including such ground expanded graphite agglomerates. The disclosure also pertains to methods for making such composites and the use of such composites in preparing thermally conductive materials. The agglomerates may be characterized by a certain softness allowing the agglomerates to dissolve, e.g., through shear forces applied during compounding, thereby leading to an improved feedability and a highly homogenous distribution of the expanded graphite material in the composite matrix.
    Type: Application
    Filed: August 11, 2011
    Publication date: October 3, 2013
    Applicant: TIMCAL S.A.
    Inventors: Eusebiu Grivei, Fabio Rota, Jean-Christophe Rietsch, Simone Zuercher, Raffaele Gilardi, Michael Spahr
  • Publication number: 20130234074
    Abstract: A negative electrode active material for a lithium ion battery having the composition formula SiaSnbNicTiyMmCz, wherein a, b, c, y, m and z represent atomic % values, wherein M is either one of more of Fe, Cr and Co, and wherein a>0, b>0, z>0, y?0, 0?m?1, c>5, z+0.5*b>a and c+y>0.75*b. The process for preparing the active material comprises the steps of:—providing a mixture of elemental and/or alloyed powders of the elements in the composition SiaSnbNicTiyMmCz, and—high energy milling under non-oxidizing conditions of the powder mixture.
    Type: Application
    Filed: October 27, 2011
    Publication date: September 12, 2013
    Inventors: Michael Gilles, Kris Driesen, Stijn Put
  • Patent number: 8450707
    Abstract: A thermal neutron shield comprising concrete with a high percentage of the element Boron. The concrete is least 54% Boron by weight which maximizes the effectiveness of the shielding against thermal neutrons. The accompanying method discloses the manufacture of Boron loaded concrete which includes enriching the concrete mixture with varying grit sizes of Boron Carbide.
    Type: Grant
    Filed: March 22, 2011
    Date of Patent: May 28, 2013
    Assignee: Jefferson Science Associates, LLC
    Inventors: Paul Daniel Brindza, Bert Clayton Metzger
  • Publication number: 20130089785
    Abstract: Provided is a negative-electrode material powder used for a lithium-ion secondary battery having a large discharge capacity and sufficient cycle characteristics as being durable in use. The powder for the battery includes a conductive carbon film on a lower silicon oxide powder, surface and satisfies requirements that: Si in SiC is 15.1 wt % or less in content, or A3 (=A2?A1) is 15.1 or less, given A1 (wt %): Si content measured by acid solution process, and A2 (wt %): Si content measured by alkali solution process; and a specific resistance is 30,000 ?cm or less. In the lower silicon oxide powder, a maximum value P1 of SiOx-derived halos appearing at 2?=10° to 30° and a value P2 of the strongest line peak of Si (111) appearing at 2?=28.4±0.3°, in XRD using CuK? beam, preferably satisfy P2/P1<0.01. The content of tar component is preferably 1 ppm or more and 4,000 ppm or less.
    Type: Application
    Filed: June 3, 2011
    Publication date: April 11, 2013
    Applicant: Osaka Titanium Technologies Co., Ltd.
    Inventors: Kouji Yasuda, Shingo Kizaki, Shinji Shimosaki
  • Publication number: 20130075669
    Abstract: Composite materials comprising titanium diboride, silicon carbide and carbon-containing scavenger additions are useful in electrolytic aluminum production cells. The carbon-containing scavenger additions may include tungsten carbide, boron carbide and/or carbon. The amounts of titanium diboride, silicon carbide and carbon-containing scavenger are controlled in order to provide optimum perfonnance. The titanium diboride/silicon carbide composite materials may be used as cathodes in electrolytic aluminum production cells and are electrically conductive, exhibit desirable aluminum wetting behavior, and are capable of withstanding exposure to molten cryolite, molten aluminum and oxygen at elevated temperatures during operation of such cells.
    Type: Application
    Filed: September 28, 2011
    Publication date: March 28, 2013
    Applicant: Kennametal Inc.
    Inventors: Sean Erin Landwehr, Roberta R. Yeckley
  • Publication number: 20130015175
    Abstract: The present invention relates to an improved process for producing silicon, preferably solar silicon, using novel high-purity graphite mouldings, especially graphite electrodes, and to an industrial process for production of the novel graphite mouldings.
    Type: Application
    Filed: November 4, 2010
    Publication date: January 17, 2013
    Inventors: Alfons Karl, Jürgen Erwin Lang, Hartwig Rauleder, Bodo Frings
  • Publication number: 20120315511
    Abstract: The present invention relates to electrode materials for charged electrical cells, comprising at least one polymer comprising polysulfide bridges, and carbon in a polymorph comprising at least 60% sp2-hybridized carbon atoms. The present invention further relates to electrical cells comprising the inventive electrode material, to specific polymers comprising polysulfide bridges, to processes for preparation thereof and to the use of the inventive cells.
    Type: Application
    Filed: June 5, 2012
    Publication date: December 13, 2012
    Applicant: BASF SE
    Inventors: Oliver GRONWALD, Alexander Panchenko, Arnd Garsuch
  • Publication number: 20120312467
    Abstract: The invention relates to a process for producing electrically conductive bonds between solar cells, in which an adhesive comprising electrically conductive particles is first transferred from a carrier to the substrate by irradiating the carrier with a laser, the adhesive transferred to the substrate is partly dried and/or cured to form an adhesive layer, in a further step the adhesive is bonded to an electrical connection, and finally the adhesive layer is cured. The invention further relates to an adhesive for performing the process, comprising 20 to 98% by weight of electrically conductive particles, 0.01 to 60% by weight of an organic binder component used as a matrix material, based in each case on the solids content of the adhesive, 0.005 to 20% by weight of absorbent based on the weight of the conductive particles in the adhesive, and 0 to 50% by weight of a dispersant and 1 to 20% by weight of solvent, based in each case on the total mass of the undried and uncured adhesive.
    Type: Application
    Filed: February 16, 2011
    Publication date: December 13, 2012
    Applicant: BASF SE
    Inventors: Frank Kleine Jaeger, Juergen Kaczun, Stephan Hermes
  • Publication number: 20120280184
    Abstract: The present invention relates to a composite material comprising a ceramic component, characterized in that it has a negative coefficient of thermal expansion, and carbon nanofilaments, to its obtainment process and to its uses as electrical conductor in microelectronics, precision optics, aeronautics and aerospace.
    Type: Application
    Filed: December 14, 2010
    Publication date: November 8, 2012
    Applicant: Consejo Superior De Investigaciones Cientificas (CSIC)
    Inventors: Ramon Torrecillas San Millan, Olga Garcia Moreno, Maria Amparo Borrell Tomás, Adolfo Fernández Valdes
  • Patent number: 8282796
    Abstract: A carbonaceous substrate of the present invention is such that an X-ray diffraction pattern thereof is a complex profile and includes at least two (002) diffraction lines; and the substrates contains crystallites with different interlayer spacings. Further, in the X-ray diffraction pattern, (002) diffraction lines between 2?=10° and 2?=30° have an asymmetric shape; and the X-ray diffraction pattern includes at least two pattern components which are a diffraction line whose center is at 2?=26° and a diffraction line whose center is at a lower angle than 2?=26°. Further, the carbonaceous substrate contains crystals wherein the periodic distance d002 is 0.34 nm or more and the crystallite size Lc002 is 20 nm or less based on the X-ray diffraction lines. An electrodes for fluorine electrolysis of the present invention includes the carbonaceous substrate on which a conductive diamond thin film is formed.
    Type: Grant
    Filed: September 19, 2008
    Date of Patent: October 9, 2012
    Assignee: Toyo Tanso Co., Ltd.
    Inventors: Rie Tao, Takanori Kawano, Yoshio Shodai
  • Publication number: 20120237772
    Abstract: When treated with a halogen gas, a carbon material can inhibit emission of an impurity after the treatment. A method of manufacturing the carbon material is also provided. A carbon material is subjected to an annealing process under a reduced pressure of from 1 to 10000 Pa in a H2 gas atmosphere at 500° C. to 1200° C. The duration of the annealing process is from 1 minute to 20 hours. This makes it possible to control the concentration of the halogen emitted, such as chlorine, to 5 ppb or less.
    Type: Application
    Filed: September 22, 2010
    Publication date: September 20, 2012
    Applicant: TOYO TANSO CO., LTD.
    Inventors: Takugo Ishii, Kaoru Setani, Hiroaki Matsunaga, Akiyoshi Takeda
  • Publication number: 20120214072
    Abstract: The present invention concerns electrode materials capable of redox reactions by electron and alkali-ion exchange with an electrolyte. The applications are in the field of primary (batteries) or secondary electrochemical generators, supercapacitors and light modulating systems of the electrochromic type.
    Type: Application
    Filed: May 4, 2012
    Publication date: August 23, 2012
    Applicants: ACEP Inc., Universite De Montreal, CNRS
    Inventors: Nathalie Ravet, Simon Besner, Martin Simoneau, Alain Vallee, Michel Armand, Jean-Francois Magnan
  • Publication number: 20120164531
    Abstract: An energy storage composite particle is provided, which includes a carbon film, a conductive carbon component, an energy storage grain, and a conductive carbon fiber. The carbon film surrounds a space. The conductive carbon component and the energy storage grain are disposed in the space. The conductive carbon fiber is electrically connected to the conductive carbon component, the energy storage grain, and the carbon film, and the conductive carbon fiber extends from the inside of the space to the outside of the space. The energy storage composite particle has a high gravimetric capacity, a high coulomb efficiency, and a long cycle life. Furthermore, a battery negative electrode material and a battery using the energy storage composite particle are also provided.
    Type: Application
    Filed: September 9, 2011
    Publication date: June 28, 2012
    Inventors: Jin-Ming Chen, Yen-Po Chang, Shih-Chieh Liao, Chi-Ju Cheng
  • Patent number: 8178008
    Abstract: A semiconductor material for radiation absorption and detection comprising a composition of stoichiometry Li(M12+, M22+, M32+, . . . )(G1V, G2V, G3V, . . . ) and exhibiting an antifluorite-type order, where Li=1, (M12++M22++M32++ . . . )=1, and (G1V+G2V+G3V+ . . . )=1. The material provides two useful characteristics: [1] a high Li-site density, which when enriched in 6Li, produces exceptional neutron-absorbing capabilities and [2] a semiconducting band-gap for the efficient conversion of absorbed photon and neutron energies into electrical currents. These characteristics can be exploited in applications for power generation or the spectroscopic detection of gamma and neutron radiation. The material can be tailored so as to detect only gamma photons, detect only neutron particles, or simultaneously detect gamma photons and neutron particles.
    Type: Grant
    Filed: September 17, 2008
    Date of Patent: May 15, 2012
    Assignee: General Electric Company
    Inventors: Brent Allen Clothier, Adrian Ivan, Daniel Bruno McDevitt
  • Publication number: 20120064341
    Abstract: Composite structures of carbon nanotubes (CNTs) and metal carbides include a helical nanotube/carbide composite fiber, and a film. The composite fiber was prepared by pulling/twisting carbon nanotubes from an array of nanotubes to form an as-spun fiber and soaking it a metal precursor solution, and then heating it under a reducing atmosphere with a carbon source. The composite fiber had a higher tensile strength, a higher conductivity, and a higher tensile modulus than the as-spun fiber. A composite structure in the form of parallel ribbons of aligned carbon nanotubes embedded in a film of NbC showed an enhanced conductivity along the CNT axial direction, and improved superconducting properties. The enhanced upper critical field of NbC/CNT suggested that the inclusion of CNTs in the NbC matrix reduced the coherence length of the NbC. Nanomechanical testing also demonstrated the potential for enhanced fracture toughness of NbC/CNT composites.
    Type: Application
    Filed: September 22, 2011
    Publication date: March 15, 2012
    Inventors: Guifu Zou, Yingying Zhang, Anthony Keiran Burrell, Thomas Mark McCleskey, Quanxi Jia
  • Publication number: 20110175038
    Abstract: Compositions of carbon nanoflakes are coated with a low Z compound, where an effective electron emission of the carbon nanoflakes coated with the low Z compound is improved compared to an effective electron emission of the same carbon nanoflakes that are not coated with the low Z compound or of the low Z compound that is not coated onto the carbon nanoflakes. Compositions of chromium oxide and molybdenum carbide-coated carbon nanoflakes are also described, as well as applications of these compositions. Carbon nanoflakes are formed and a low Z compound coating, such as a chromium oxide or molybdenum carbide coating, is formed on the surfaces of carbon nanoflakes. The coated carbon nanoflakes have excellent field emission properties.
    Type: Application
    Filed: January 26, 2009
    Publication date: July 21, 2011
    Inventors: Kun Hou, Dennis M. Manos, Ronald A. Outlaw
  • Publication number: 20110003174
    Abstract: There are provided a carbon wire using CNT or a similar carbon filament having a sufficiently low electrical resistance value, and a wire assembly employing that carbon wire. A carbon wire includes an assembly portion and a graphite layer. The assembly portion is configured of a plurality of carbon filaments implemented as carbon nanotubes in contact with one another. The graphite layer is provided at an outer circumference of the assembly portion.
    Type: Application
    Filed: May 8, 2009
    Publication date: January 6, 2011
    Applicant: Sumitomo Electric Industries, Ltd.
    Inventors: Takeshi Hikata, Jun-ichi Fujita
  • Patent number: 7820129
    Abstract: The invention relates to a method for producing carbon or HV graphite electrodes, in which a carbon carrier is mixed with a hydrocarbon-containing binder, and the mixture is subjected to a coking process and/or graphitization process, and one or more synthetic titanium compounds are additionally added to the raw materials. The titanium compound is preferably comprised of TiO2. Iron oxide can be added as an accompanying substance.
    Type: Grant
    Filed: September 16, 2004
    Date of Patent: October 26, 2010
    Assignee: Sachtleben Chemie GmbH
    Inventors: Djamschid Amirzadeh-Asl, Dieter Fünders
  • Publication number: 20100233546
    Abstract: Described is an anode material which is a transition metal nitride or carbide in form of nanoparticles, preferably a nitride or carbide with one nitrogen or carbon per metal, and especially a nitride or carbide having rock salt structure. A preferred anode material is vanadium nitride, in particular carbon coated vanadium nitride having a mean particle size of <500 nm. Embedded in an electrically conducting environment, such nanoparticulate material, in particular the vanadium nitride shows exceptional good charging-discharging cycle stability.
    Type: Application
    Filed: March 11, 2010
    Publication date: September 16, 2010
    Inventors: Reinhard Nesper, Dipan Kundu, Rahul Fotedar, Michael Woerle, Helmer Fjellvag
  • Patent number: 7794628
    Abstract: A chip-shaped electronic component includes a substrate and an end face electrode layer provided on an end face of the substrate, in which the end face electrode layer contains a mixed material. The mixed material includes as a conductive particle, a carbon powder, a whisker-like inorganic filler coated with a conductive film, and a flake-like conductive powder. Additionally, an epoxy resin has a weight-average molecular weight between 1,000 and 80,000.
    Type: Grant
    Filed: August 28, 2006
    Date of Patent: September 14, 2010
    Assignee: Panasonic Corporation
    Inventors: Naohiro Takashima, Shoji Hoshitoku, Takasi Oobayasi, Mituru Harada
  • Publication number: 20100072430
    Abstract: This invention relates to free-flowing compositions of carbon nanosheets and core-shell particles, and to a plasma-torch process for making them.
    Type: Application
    Filed: May 5, 2006
    Publication date: March 25, 2010
    Inventors: John S. Gergely, Edwin S. Marston, Shekhar Subramoney, Lu Zhang
  • Patent number: 7652098
    Abstract: The present invention relates to a resin composition for GHz-band electronic components, the composition comprising nanoscale carbon tubes and at least one member selected from the group consisting of thermoplastic resins, curable resins, and composite resins of thermoplastic resins and curable resins; wherein the nanoscale carbon tubes are present in an amount of 0.0001 to 0.4 wt. % based on the resin; and an electronic component obtainable from the resin composition, or the like.
    Type: Grant
    Filed: February 2, 2005
    Date of Patent: January 26, 2010
    Assignee: Osaka Gas Co., Ltd
    Inventors: Kouichi Yamaguchi, Hidekazu Hayama, Ren-De Sun, Masahiro Yamada, Hitoshi Nishino, Yasunori Yokomichi
  • Publication number: 20090134361
    Abstract: A chip-shaped electronic component comprising a substrate and an end face electrode layer provided on an end face of the substrate, in which the end face electrode layer contains a mixed material including, as a conductive particle, a carbon powder, a whisker-like inorganic filler coated with a conductive film, and a flake-like conductive powder, and an epoxy resin having a weight-average molecular weight between 1,000 and 80,000.
    Type: Application
    Filed: August 28, 2006
    Publication date: May 28, 2009
    Inventors: Naohiro Takashima, Shoji Hoshitoku, Takasi Oobayasi, Mituru Harada
  • Patent number: 7477131
    Abstract: Provided are compositions containing 20 to 50% by volume of a nitride or carbide of a group IV metal, a polymer, and 1 to 9% by volume of an allotrope of carbon. The compositions are useful in manufacturing resistors with low temperature coefficients of resistivity.
    Type: Grant
    Filed: September 7, 2006
    Date of Patent: January 13, 2009
    Assignee: E.I. Du Pont De Nemours
    Inventors: Nyrissa S. Rogado, Munirpallam Appadorai Subramanian
  • Patent number: 7244373
    Abstract: To provide a composite excellent in mechanical strength or in electric conductivity and obtained by combining a carbon nanotube structure and ceramics, and a method of manufacturing the same. The composite is composed of the carbon nanotube structure and the ceramics, and, in the carbon nanotube carbon nanotube structure, functional groups bonded to multiple carbon nanotubes are chemically bonded to mutually cross-link to construct a network structure.
    Type: Grant
    Filed: February 4, 2004
    Date of Patent: July 17, 2007
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Kazunori Anazawa, Chikara Manabe, Masaki Hirakata, Kentaro Kishi, Taishi Shigematsu, Miho Watanabe, Hiroyuki Watanabe, Takashi Isozaki, Shigeki Ooma, Shinsuke Okada
  • Patent number: 7112549
    Abstract: A low-thermal-expansion, rigid and wear-resistant ceramic is provided. The low-thermal-expansion ceramic of the invention includes 60 vol % to 99.9 vol % of at least one selected from the group consisting of cordierite, spodumene and eucryptite and 0.1 vol % to 40 vol % of at least one selected from the group consisting of carbides, nitrides, borides and silicides of group IVa elements, group Va elements and group VIa elements, and boron carbide. The ceramic has a porosity of 0.5% or less and a thermal expansion coefficient, at 10° C. to 40° C., of 1.5×10?6/° C. or less.
    Type: Grant
    Filed: September 20, 2001
    Date of Patent: September 26, 2006
    Assignee: Sumitomo Metal Industries, Ltd.
    Inventors: Yasuki Yoshitomi, Tadahisa Arahori
  • Patent number: 7025905
    Abstract: Black composite particles for a semiconductor sealing material of the present invention, comprises: an extender pigment as a core particle; and a black pigment formed on surface of the extender pigment in an amount of from 1 to 100 parts by weight based on 100 parts by weight of the extender pigment, and a semiconductor sealing material by using the black composite particles. Such black composite particles are not only enhanced in blackness, moisture resistance, fluidity and tinting strength, but also show an excellent dispersibility in binder resins, and the semiconductor sealing material is capable of exhibiting a high volume resistivity as well as excellent blackness, moisture resistance, soldering heat resistance, flowability and flexural strength.
    Type: Grant
    Filed: January 31, 2003
    Date of Patent: April 11, 2006
    Assignee: Toda Kogyo Corporation
    Inventors: Hiroko Morii, Yusuke Shimohata, Kazuyuki Hayashi
  • Patent number: 7018568
    Abstract: The invention is directed to conductive polymer compositions, catalytic ink compositions (e.g., for use in screen-printing), electrodes produced by deposition of an ink composition, methods of making, and methods of using thereof. An exemplary ink material comprises platinum black and/or platinum-on-carbon as the catalyst, graphite as a conducting material, a polymer binding material, and an organic solvent. The polymer binding material is typically a copolymer of hydrophilic and hydrophobic monomers. The conductive polymer compositions of the present invention can be used, for example, to make electrochemical sensors. Such sensors can be used in a variety of analyte monitoring devices to monitor analyte amount or concentrations in subjects, for example, glucose monitoring devices to monitor glucose levels in subjects with diabetes.
    Type: Grant
    Filed: December 19, 2002
    Date of Patent: March 28, 2006
    Assignee: Animas Technologies LLC
    Inventor: Michael J. Tierney
  • Patent number: 7011771
    Abstract: The present invention includes carbon nanotubes whose hollow cores are 100% filled with conductive filler. The carbon nanotubes are in uniform arrays on a conductive substrate and are well-aligned and can be densely packed. The uniformity of the carbon nanotube arrays is indicated by the uniform length and diameter of the carbon nanotubes, both which vary from nanotube to nanotube on a given array by no more than about 5%. The alignment of the carbon nanotubes is indicated by the perpendicular growth of the nanotubes from the substrates which is achieved in part by the simultaneous growth of the conductive filler within the hollow core of the nanotube and the densely packed growth of the nanotubes. The present invention provides a densely packed carbon nanotube growth where each nanotube is in contact with at least one nearest-neighbor nanotube.
    Type: Grant
    Filed: November 28, 2001
    Date of Patent: March 14, 2006
    Assignee: Battelle Memorial Institute
    Inventors: Yufei Gao, Jun Liu
  • Patent number: 6916434
    Abstract: Disclosed are an iron-carbon composite in which 10 to 90% of the internal space of a nanoflake carbon tube or a nested multi-walled carbon nanotube is filled with iron carbide or iron; a carbonaceous material containing such iron-carbon composites; and a process for preparing the same. The iron-carbon composite is useful for electron emitting materials and other applications.
    Type: Grant
    Filed: October 4, 2004
    Date of Patent: July 12, 2005
    Assignee: Osaka Gas Company Limited
    Inventors: Hitoshi Nishino, Haruyuki Nakaoka, Katsuhide Okimi, Ryoichi Nishida, Takeo Matsui
  • Patent number: 6835330
    Abstract: Disclosed are an iron-carbon composite in which 10 to 90% of the internal space of a nanoflake carbon tube or a nested multi-walled carbon nanotube is filled with iron carbide or iron; a carbonaceous material containing such iron-carbon composites; and a process for preparing the same. The iron-carbon composite is useful for electron emitting materials and other applications.
    Type: Grant
    Filed: August 6, 2002
    Date of Patent: December 28, 2004
    Assignee: Osaka Gas Company Limited
    Inventors: Hitoshi Nishino, Haruyuki Nakaoka, Katsuhide Okimi, Ryoichi Nishida, Takeo Matsui
  • Patent number: 6730892
    Abstract: A resistive heating element having high generation efficiency for far infrared rays and a comparatively high specific resistance while maintaining the strength required as a resistive heating element, is obtained by shaping a mixture of graphite powder, boron nitride and silicone rubber to a desired shape followed by firing by heating to 380° C. in an oxidizing atmosphere and then further firing by heating to 1100° C. in a nitrogen atmosphere.
    Type: Grant
    Filed: May 6, 2003
    Date of Patent: May 4, 2004
    Assignee: Mitsubishi Pencil Co., Ltd.
    Inventors: Yoshihisa Suda, Noboru Kanba, Atsushi Sato, Kunitaka Yamada
  • Publication number: 20040053136
    Abstract: The gist of the instant invention is the use of lithium carbide in the cathode of a rechargeable lithium ion battery. Lithium carbide is used to electrochemically release electrons and lithium ions from the cathode. A preferred cathode of the instant invention is graphite intercalated with a mixture of lithium carbide and a lithium salt such as lithium tetrafluoroborate.
    Type: Application
    Filed: September 13, 2002
    Publication date: March 18, 2004
    Inventor: William C. Bauman
  • Patent number: 6695984
    Abstract: The present invention provides: a fabrication method of a silicon carbide sintered body, including a step of fabricating a mixed powder slurry by dissolving or dispersing silicon carbide powder, at least one organic material composed of a nitrogen source, and at least one organic material composed of a carbon source or carbon powder in a solvent, a step of fabricating a green body by pouring the mixed powder slurry into a mold and drying and a step of filling pores in the green body by immersing the green body in high purity metallic silicon that has been heated to 1450 to 1700° C. in a vacuum atmosphere or inert gas atmosphere and melted, and generating silicon carbide by reacting silicon sucked up into the pores in the green body by capillary action with free carbon in the green body; and a silicon carbide sintered body obtained by a reaction sintering method, having a density of 2.90 g/cm3 or more and a volume resistivity of 100 &OHgr;·cm or less, and containing nitrogen at 150 ppm or more.
    Type: Grant
    Filed: January 31, 2001
    Date of Patent: February 24, 2004
    Assignee: Bridgestone Corporation
    Inventors: Fumio Odaka, Yoshitomo Takahashi
  • Patent number: 6589448
    Abstract: A ceramic bearing ball in which at least a portion of a constituent ceramic is formed of an electrically conductive inorganic compound phase, whereby a proper electrical conductivity is imparted to the ceramic. Thus, electrifying of a bearing ball is prevented or effectively suppressed. This prevents the problem involved in production of balls of small diameter wherein such balls adhere to an apparatus (e.g., a container) during production thereof, thus hindering smooth progress of the production process. In addition, when ceramic balls are used in precision electronic equipment, such as a hard disk drive of a computer, which is operated at high rotational speed, adhesion of foreign substance due to electrification of the balls, and resultant generation of abnormal noise or vibration can be prevented or effectively suppressed.
    Type: Grant
    Filed: April 10, 2001
    Date of Patent: July 8, 2003
    Assignee: NGK Spark Plug Co., Ltd.
    Inventors: Tomonori Niwa, Tetsuji Yogo
  • Patent number: 6497829
    Abstract: A method of producing silicon carbide (SiC) heating and lighting elements, by mixing a quantity of finely-divided particles of carbon in a binder; shaping the mixture; applying finely-divided particles of elemental silicon over the shaped mixture; and heating the shaped mixture in a furnace, while subjected to a vacuum, to vaporize and diffuse the silicon and to react the silicon vapor with the carbon in the binder, to convert the carbon to silicon carbide. The silicon particles includes a dopant to reduce the internal resistance of the produced silicon carbide to a value of up to a few hundred &sgr;hm-cms.
    Type: Grant
    Filed: December 13, 2000
    Date of Patent: December 24, 2002
    Assignee: Silbid Ltd.
    Inventor: Gady Golan
  • Patent number: 6426586
    Abstract: A contact glass composition for use in resistor-type spark plugs is described. The contact glass composition is a mixture of: (a) at least one metal; (b) graphite; and (c) silicon. Additionally, borosilicate glass, barium borate glass, magnesium aluminum silicate, ball clay, and aluminum may also be included in the contact glass composition.
    Type: Grant
    Filed: February 12, 1999
    Date of Patent: July 30, 2002
    Assignee: AlliedSignal Inc.
    Inventors: Ching T. Young, Philip R. Woodruff, Duane L. Schreiner, Harold E. Dunfee, Ralph Frederick, Jeff A. Goldacker
  • Patent number: 6395082
    Abstract: In a coating material for the inner surface of a cathode-ray tube comprising an aqueous dispersion medium containing silicates of lithium and potassium and a dispersing agent, and a graphite particles and, if necessary, particles of the other specific metal compounds suspended therein, the invention is characterized in that the molar ratio of potassium to lithium is in the range of 1 to 9, and the molar ratio of silicon dioxide to the total quantity of oxides of lithium and potassium is in the range of 2.5 to 3.5, and the obtained coating material is most suitable for suppressing the quantities of gases released from the inner coating, for making good use of gas-adsorbing ability of graphite, and for increasing the degree of vacuum in the cathode-ray tube.
    Type: Grant
    Filed: April 26, 2001
    Date of Patent: May 28, 2002
    Assignee: Hitachi Powdered Metals Co., Ltd.
    Inventor: Hiroshi Shimbori
  • Patent number: 6328913
    Abstract: A composite monolithic element for use as a hot surface ignitor or the like includes first and second regions or layers. The first region or layer comprises a low pressure ejection molded mixture of silicon carbide and silicon nitride particles or other compatible mix which will alter processing art as a resistor. This resistor includes two cold portions and a hot portion intermediate thereof. The second region or layer also includes an ejection molded mixture of silicon carbide and silicon nitride particles or other appropriate mixture, while the second layer contains the same or similar compounds as the first, the rations of the compound differ so that after processing it acts as an insulator and as a support for the first layer. These first and second layers are bonded together to form a joint free mechanically continuous structure and densified.
    Type: Grant
    Filed: August 31, 1999
    Date of Patent: December 11, 2001
    Inventors: Peter T. B. Shaffer, Marvin C. Lunde
  • Patent number: 6187256
    Abstract: A process is described for producing a conductive sintered body based on silicon carbide, in which a) silicon carbide particles, optionally pretreated with a surface modifier, are dispersed in an aqueous and/or organic medium and positive or negative surface charges are generated on the silicon carbide particles by adjustment of the pH of the dispersion obtained; b) carbon black and boron carbide are mixed in as sintering aids, where at least the carbon black particles have a surface charge opposite to the surface charge of the silicon carbide particles and the boron carbide can also be added, completely or in part, at a later point in time (stage c′)); c) the slip thus obtained is shaped directly to form a green body or c′) a sinterable powder is isolated from the slip obtained and is shaped to form a green body, where the above boron carbide can also be added to this sinterable powder; and d) the green body obtained is subjected to pressureless sintering to form a sintered body in essential
    Type: Grant
    Filed: April 8, 1998
    Date of Patent: February 13, 2001
    Assignee: Institut für Neue Materialen gemeinnützige GmbH
    Inventors: Mesut Aslan, Rüdiger Nass, Helmut Schmidt
  • Patent number: 6114433
    Abstract: A novel PTC conductive polymer composition is disclosed, which comprises (a) 35 to 60%, by weight of the composition, of a branched polyolefin with a polydispersity index of less than 2.5; and (b) 20 to 45%, by weight of the composition, of conductive particles which have been dispersed in the polyolefin. The PTC composition of the invention has intense, reproducible PTC behavior and is particularly suitable for use in PTC thermistors.
    Type: Grant
    Filed: August 11, 1998
    Date of Patent: September 5, 2000
    Assignee: Industrial Technology Research Institute
    Inventors: Chia-Tin Chung, Bin-Yuan Lin, Hsin-Herng Wang, Hsiao-Pin Huang