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6833012 |
Petroleum pitch-based carbon foam
Petroleum or coal tar pitch-based cellular or porous products having a density of preferably between about 0.1 g/cm 3 and about 0.8 g/cm 3 are produced by the controlled heating of mesophase...
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6814765 |
Cellular coal products and processes
According to the present invention there is provided a coal-based carbon foam having a density of between about 0.1 g/cm 3 and about 0.8 g/cm 3 , preferably between about 0.2 g/cm 3 and about 0.6...
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6803108 |
Carbon fiber binder pitch
Carbon fiber bundles may be dispersed into substantially single mono-filaments in pitch by stirring a mixture of fibers and pitch at a temperature at which the pitch has a viscosity of about 0.1 to...
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6800584 |
Gold catalysts supported on graphitic carbon nanostructures
Gold-containing catalysts, which catalyst is comprised of gold on a nanostructure support, which support is characterized as graphite nanofibers comprised of graphite sheets, which graphite sheets...
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6787235 |
Consolidated amorphous carbon materials, their manufacture and use
A carbon based material produced from the consolidation of amorphous carbon by elevated temperature compression. The material having unique chemical and physical characteristics that lend...
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6783747 |
Graphite carbon powder, and method and apparatus for producing the same
An object of the present invention is to provide a method for producing at high productivity graphite powder containing no impurity, in which carbon powder material is effectively heated for...
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6776936 |
Process for making porous graphite and articles produced therefrom
A process for producing solid, porous graphites which provides a more uniform density gradient throughout the ultimate product. The process utilizes a pressure drop during processing in order to...
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6773689 |
Carbon media for storage of hydrogen
This invention relates to a carbon media for storage of hydrogen characterized in that it comprises known and novel micro-domain materials and that it is produced by a one or two-step plasma...
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6756027 |
Method of preparing graphite intercalation compounds and resultant products
A method of preparing graphite intercalation compounds in which graphite particles are immersed in an aqueous electrolyte media comprising both an acid and an oxidizing agent. The immersed graphite...
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6746982 |
Porous carbon body for a fuel cell having an electronically conductive hydrophilic agent
The invention is a porous carbon body for a fuel cell having an electronically conductive hydrophilic agent and method of manufacture of the body. The porous carbon body comprises an electronically...
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6746768 |
Thermal interface material
A thermal interface and a thermal interface as part of a thermal management system that comprises a heat source, and a cooling module. The heat source has an external surface; the thermal interface...
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6740403 |
Graphitic polyhederal crystals in the form of nanotubes, whiskers and nanorods, methods for their production and uses thereof
Isolated graphitic polyhedral crystal and methods for their isolation are provided wherein the crystals have graphite sheets arranged in a plurality of layers to form an elongated structure having...
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6692718 |
Method for preparing nano-size particulate graphite
A multi-layer fullerene, particularly a carbon nano-onion which is nano-size particulate can be produced efficiently and in high purity by irradiating soot-like carbon such as carbon black obtained...
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6673492 |
Electrode material for a secondary cell and its production process
An electrode material for a secondary cell comprising as its essential component a powder of graphite having a crystallinity of 90% or more obtained by graphitizing a highly heat resistant polymer...
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6669919 |
Intercalated graphite flakes exhibiting improved expansion characteristics and process therefor
A method for providing intercalated graphite flake with improved exfoliation characteristics, specifically, improved expansion pressure, is presented. The method includes treating graphite flakes...
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6663964 |
Heat dissipating structure
A heat dissipating structure is provided which lowers the thermal contact resistance between a heat generating electronic component and a heat dissipating component, and markedly improves the heat...
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6660434 |
Engineered carbonaceous materials and power sources using these materials
An engineered carbonaceous material (ECM) comprising a mixture of synthetic graphite and one or more other graphite, such as natural flake graphite, natural vein graphite, and/or amorphous...
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6656239 |
Blended pitch/coal based carbon foams
According to the present invention, carbon foams are produced largely in accordance with the methods described in U.S. patent application Ser. No. 09/902,828, but with starting materials that...
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6656238 |
Coal-based carbon foam
A method for the manufacture of coal-based carbon foams from a coal particulate starting material that comprises blending from 1 to about 10% by weight of pitch with the coal particulate before...
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6649431 |
Carbon tips with expanded bases grown with simultaneous application of carbon source and etchant gases
Systems and methods are described for carbon tips with expanded bases. A method includes producing an expanded based carbon containing tip including: fabricating a carbon containing expanded base...
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6645456 |
Method for producing expandable graphite intercalation compounds using phosphoric acids, and graphite foil
A method for producing expandable graphite intercalation compounds uses a thermal polyphosphoric acid which is added to an intercalation agent or to graphite. Preferably, the thermal polyphosphoric...
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6620359 |
Water based method of making expanded graphite the product produced and expanded graphite polymeric pellets
A method of making expanded graphite. The method comprises grinding flexible graphite foil, preferably recycled material, to a small particle size, wetting the graphite foil with a water solution,...
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6596055 |
Hydrogen storage using carbon-metal hybrid compositions
A process is provided for the transport and storage of hydrogen by reversible sorption and containment within carbon-metal hybrid materials. The process comprises contacting a carbon-metal hybrid...
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6576369 |
Graphite powder suitable for negative electrode material of lithium ion secondary batteries
A graphite powder has surface closed-end structures in which the graphite c-plane layers of the graphite layer crystal lattices have closed-ends on the surface of the graphite powder by linking the...
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6576168 |
Process for making carbon foam induced by process depressurization
A process for producing molded pitch based foam is shown which provides a more uniform density gradient throughout the ultimate product. The process utilizes a pressure drop during processing in...
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6558782 |
Flexible graphite sheet and method of producing the same
Flexible graphite article of manufacture made by compressing a mixture of expanded graphite particle and a fluoro-resin including ethylene-tetrafluoroethylene (ETFE) copolymers after additional...
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6547990 |
Process for producing activated carbon material, and electric double layer capacitor employing the same
An activated carbon for an electric double layer capacitor electrode, which comprises a stacking structure having 2 layers or less of in a proportion stacking of from 25 to 80% and a stacking...
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6544491 |
Methods of making a carbon foam
A method of making anisotropic carbon foam material includes de-ashing and hydrogenating bituminous coal, separating asphaltenes from oils contained in the coke precursor, coking the material to...
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6540972 |
Carbon material and method of preparing the same
A graphite having geometrically shaped holes limited to the top atomic layer such as circles, polygons and combinations thereof, and a method of preparing a graphite having geometrically shaped...
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6524501 |
Pitch fiber bundle and pitch type carbon fiber bundle and method for production thereof
This invention provides a pitch fiber bundle for carbon fibers of small size, a carbon fiber bundle, and a method for the production thereof, i.e. a method for the production of carbon fibers of a...
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6511768 |
Electrode substrate for electrochemical cells based on low-cost manufacturing processes
This invention relates to electrode substrates for electrochemical cells, particularly low-temperature fuel cells, and processes for their production. Graphitized fiber web structures are used that...
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6506354 |
Method of making a carbon foam material and resultant product
A method of making anisotropic carbon foam material includes de-ashing and hydrogenating bituminous coal, separating asphaltenes from oils contained in the coke precursor, coking the material to...
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6485864 |
Production process of material for lithium-ion secondary batteries, material obtained by the process, and batteries
Boron-substituted graphite, which contains N-bonded boron atoms in a small proportion relative to whole substituted boron atoms, is produced by heating a feed fine particulate mixture of an...
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6455199 |
Nonaqueous electrolyte secondary battery and method for manufacturing negative electrode of the same
Graphite powder for a negative electrode in prior arts, which allows lithium ions to repeat intercalation and deintercalation reversibly by charge and discharge, has failed to attain a specific...
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6440610 |
Negative active material for lithium secondary battery and manufacturing method of same
The present invention relates to a negative active material for a lithium secondary battery and a manufacturing method thereof, wherein the negative active material comprises a crystalline or...
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6432536 |
Articles comprising highly crystalline graphite and method for their preparation
Self-reinforcing, pitch-based carbon articles having an unique combination of excellent thermal conductivity and outstanding mechanical properties are produced by carbonizing acid-treated mesophase...
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6426376 |
Graphitic material loaded with alkali metal
A graphitic material having an accessible surface of at least 50 m 2 per gram, wherein 0.1-40% by weight, based on the weight of the material, of at least one alkali metal is taken up between the...
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6413671 |
Flexible graphite article and fuel cell electrode with enhanced electrical and thermal conductivity
A graphite article useful in producing a membrane electrode assembly comprising a pair of electrodes and an ion exchange membrane positioned between the electrodes is presented. At least one of the...
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6403261 |
Carbon-containing material and a method of making porous electrodes for chemical sources of electric current
The proposed carbon-containing material comprises an electrode-active material, preferably a fluorocarbon, containing 58-67 wt. % fluorine, a binder, an agent adding to the conductance of the...
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6391495 |
Negative active material for lithium secondary battery, method of preparing the same and lithium secondary battery comprising the same
A negative active material for a lithium secondary battery includes a crystalline graphite core and a carbon shell. The carbon shell includes at least one material selected from a transition metal,...
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6375875 |
Diagnostic monitor for carbon fiber processing
A method for monitoring characteristics of materials includes placing a material in an application zone, measuring a change in at least one property value of the application zone caused by placing...
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6375918 |
Method and device for continuously burning powder carbon
A process for the continuous firing of powdered carbon which comprises firing powdered carbon continuously by feeding powdered carbon into a firing tube and applying microwaves to the top surface...
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6376663 |
Desalting and purification of oligosaccharides and their derivatives
A preparative method of separating oligosaccharides from contaminants such as peptides and salts, comprising the steps of reacting a solution containing oligosaccharides and contaminants with a...
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6306264 |
Method for producing expanded graphite
Disclosed is a novel method for producing an expanded graphite which can be utilized for oil adsorbents, gaskets, packing sheets, adsorbents of volatile organic compounds and the like. SO 3 ...
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6303096 |
Pitch based carbon fibers
Pitch based carbon fiber wherein the spread La of graphite crystallites constituting a fiber in the direction of layer plane is 1000 angstroms or less; the orientation angle Ψ in the direction of...
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6294142 |
Hydrogen storage systems and method of making them
A hydrogen fuel storage composition is prepared by mixing and reacting, on an atomic proportion basis, one part of an alkali metal selected form the group of lithium, sodium or potassium with eight...
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6287694 |
Method for expanding lamellar forms of graphite and resultant product
A method for making expanded graphite from lamellar flake graphite comprising first providing lamellar flake graphite particles having at least a minimal purity, then intercalating the lamellar...
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6280663 |
Process of making pins for connecting carbon electrodes
A process for preparing pins for connecting carbon electrodes is presented. In particular, a process for preparing pins for connecting carbon electrodes including the steps of combining calcined...
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6258337 |
Carbonaceous material for electric double layer capacitor and process for production thereof
A carbonaceous electrode material for electric double layer capacitors having a large capacitor per volume, a low resistivity and a large bulk density, is provided as a carbonaceous material having...
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6254993 |
Flexible graphite sheet with decreased anisotropy
Flexible graphite sheet is made by compressing a mixture of relatively large particles of intercalated, exfoliated, expanded natural graphite with smaller particles of intercalated, exfoliated...
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