Matches 151 - 200 out of 222 < 1 2 3 4 5 >
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5965267 Method for producing encapsulated nanoparticles and carbon nanotubes using catalytic disproportionation of carbon monoxide and the nanoencapsulates and nanotubes formed thereby  
A method for the production of carbon encapsulated nanoparticles, carbon nanotubes and other closed carbon structures, including contacting a catalyst of a transition metal, or a compound or alloy...
5877110 Carbon fibrils  
Products containing carbon fibrils having a morphology of vermicular tubes that are free of a continuous thermal carbon overcoat and have graphitic layers, wherein the length of the projection of...
5858530 Flexible ignition resistant biregional fiber, articles made from biregional fibers, and method of manufacture  
A flexible, ignition resistant, biregional fiber is disclosed, wherein the fiber is preferably derived from a single homogeneous polymeric precursor composition, said biregional fiber comprising an...
5853865 Treatment of vapor-grown carbon fibers for fiber-polymer matrix composites  
Vapor-grown carbon fibers from methane produced in globular clumps of individual fibers of about 0.5 to 50 micrometers in length are rendered infiltratable and wettable with molten plastic for...
5853429 Method for converting multidimensional sheet structures consisting of polyacrylonitrile fibres into the thermally stabilized stage  
Method for converting two-dimensional or three-dimensional sheet structures consisting of polyacrylonitrile fibres or substantially of polyacrylonitrile fibres, such as woven fabrics, layered...
5846509 Method of producing vapor grown carbon fibers using coal  
A method of producing vapor grown carbon fibers is provided in which coal is utilized as a source of an iron catalyst, as a source of hydrocarbon and sulfur, or both. The method includes the steps...
5780101 Method for producing encapsulated nanoparticles and carbon nanotubes using catalytic disproportionation of carbon monoxide  
A method for the production of carbon encapsulated nanoparticles, carbon nanotubes and other closed carbon structures, including contacting a catalyst of a transition metal, or a compound or alloy...
5747161 Graphite filaments having tubular structure and method of forming the same  
A graphite filament which has carbon as a basic structural unit and which have a tubular shape being formed with a helical structure with the carbon hexagons as a main structure and with an outer...
5726116 Fibril aggregates and method for making same  
A fibril aggregate that includes a multiplicity of carbon fibrils whose longitudinal axes have substantially the same relative orientation, each of the fibrils characterized as having graphitic...
5707916 Carbon fibrils  
A volume of carbon fibrils that includes a multiplicity of fibrils having a morphology consisting of vermicular tubes that are free of a continuous thermal carbon overcoat and have graphite layers...
5639429 Reactor for the production of short ceramic fibers from gas  
The production of fibers is carried out by allowing a gas mixture containing a gaseous hydrocarbon or an appropriate gas to pass through a substrate (generally a steel sheet) arranged facing the...
5618875 High performance carbon filament structures  
Disclosed are novel high performance composite structures comprised of carbon filaments in a matrix selected from the group consisting of polymeric materials, carbon, ceramic materials, and metals....
5591312 Process for making fullerene fibers  
This invention provides a method and apparatus for producing fullerene fibers by establishing an electric field between a needle electrode and an opposing electrode in the presence of carbon and a...
5589152 Carbon fibrils, method for producing same and adhesive compositions containing same  
This invention concerns a discrete carbon fibril characterized by a substantially constant diameter between about 3.5 and about 70 nanometers, length greater than about 5 times the diameter and...
5578543 Carbon fibrils, method for producing same and adhesive compositions containing same  
This invention concerns composite materials comprising a plurality of carbon fibrils in a matrix wherein the carbon fibrils are each characterized by a substantially constant diameter between about...
5569635 Catalyst supports, supported catalysts and methods of making and using the same  
A supported catalyst comprising a carbon fibril aggregate and a catalytically effective amount of a catalyst supported therein, a process for performing a catalytic reaction in fluid phase using...
5500200 Fibrils  
This invention relates to fibrils. It more particularly refers to carbon/graphite fibrils and to an improved process for producing such. Carbon fibrils as used herein means graphitic fibrils having...
5456897 Fibril aggregates and method for making same  
A fibril aggregate that includes a multiplicity of carbon fibrils whose longitudinal axes have substantially the same relative orientation, each of the fibrils characterized as having graphitic...
5427054 Method of making a diamond film  
A process of forming high quality diamond films, wherein non-diamond components and crystal defects are significantly reduced. Diamond films are formed on a diamond substrate by vapor-phase...
5424054 Carbon fibers and method for their production  
The present invention relates to hollow carbon fibers having a cylindrical wall comprising a single layer of carbon atoms and a process for the production of these fibers.
5413866 High performance carbon filament structures  
High performance carbon filaments are provided which are characterized as having; (i) a surface area from about 50 m 2 /g to 800 m 2 /g, (ii) an electrical resistivity from about 0.3 μohm.m to...
5413773 Method for forming carbon filters  
In a preferred embodiment, an apparatus and method for forming carbon fibers in a gas phase reaction is disclosed wherein a reactor defines a reaction chamber with a closed end and an outlet and a...
5409775 Vapor-grown and graphitized carbon fibers, process for preparing same, molded members thereof, and composite members thereof  
There are disclosed vapor-grown and graphitized carbon fibers capable of forming composite materials having the vapor-grown and graphitized carbon fibers contained at a high packing density and...
5374415 Method for forming carbon fibers  
In a preferred embodiment, an apparatus and method for forming carbon fibers in a gas phase reaction is disclosed wherein a reactor defines a reaction chamber with a closed end and an outlet, and a...
5336360 Laser assisted fiber growth  
A method of making pure fibers from a parent material utilizing laser energy. A short wavelength laser is used to achieve a diffraction limited focal spot diameter that is smaller than the diameter...
5227142 Production apparatus for vapor-grown fine fibers  
Production apparatus for vapor-grown fine fibers, comprising a vertical furnace and a horizontal furnace intersecting each other in an L-shaped configuration. Raw material and catalyst and carrier...
5210116 Resin composite material containing graphite fiber  
Provided herein is a resin composite material containing graphite fiber which has good electrical conductivity and changes only a little in electrical resistance after processing. These desired...
5171560 Carbon fibrils, method for producing same, and encapsulated catalyst  
A process for preparing carbon fibrils using discrete, unfused, metal-containing catalytic particles encapsulated in non-graphitic carbon, a carbide, or an organic polymer.
5165909 Carbon fibrils and method for producing same  
The invention relates to carbon fibrils characterized by a substantially constant diameter, length greater than about 5 times the diameter, an ordered outer region of catalytically grown, multiple,...
5106606 Fluorinated graphite fibers and method of manufacturing them  
Fluorinated graphite fibers comprising an intercalated compound of graphite fibers, having a three-dimensional crystal structure in which carbon hexagonal network faces are substantially in...
5102647 Method of producing vapor growth carbon fibers  
A method of producing vapor growth carbon fibers which are grown in a rection space by thermally decomposing gaseous hydrocarbon and by using transition metal fine particles as the catalyst,...
5039504 Process for producing graphite whiskers  
There is provided a process for producing graphite whiskers by supplying a carbon source compound with a carrier gas into a heating zone in a reactor and decomposing the carbon source compound in a...
5024818 Apparatus for forming carbon fibers  
In a preferred embodiment, an apparatus for forming carbon fibers in a continuous gas phase reaction is disclosed wherein a reactor defines a vertical reaction chamber with a close upper end and a...
5010829 Method and apparatus for treatment of hazardous waste in absence of oxygen  
Hazardous waste treatment method and apparatus are disclosed in the preferred and illustrated embodiment. A feedstock of solid or liquid hazardous waste material is combusted in a plasma generator...
4970123 Isotropically reinforced net-shape microcomposites  
A novel isotropically reinforced microcomposite is described. An entirely fluid-phase method has been devised for producing the net-shape filamentary structures. The process depends for its success...
4923637 High conductivity carbon fiber  
To obtain stable and high conductivity carbon fiber, hydrocarbon is thermodecomposed in vapor phase into carbon fiber with such a crystal structure that carbon hexagonal net planes thereof are...
4900483 Method of producing isotropically reinforced net-shape microcomposites  
A novel isotropically reinforced microcomposite is described. An entirely fluid-phase method has been devised for producing the net-shape filamentary structures. The process depends for its success...
4876078 Process for preparing carbon fibers in gas phase growth  
An improved process for preparing carbon fibers in a gaseous phase reaction comprising introducing a gas mixture comprising at least one carbon compound, at least one inorganic transition metal...
4855091 Method for the preparation of carbon filaments  
A method of preparing carbon filaments which comprises exposing a suitable thermostable substrate which is covered with reduced monocrystalline metal particles with a diameter of at least 5...
4816289 Process for production of a carbon filament  
A carbon filament comprising carbon layers and having a carbon structure in which the carbon layers are arranged substantially in the form of growth rings as viewed in cross-section, said carbon...
4808395 High-quality coloring carbon black and process for its production  
High-quality coloring carbon black having a specific surface area (S BET ), an area average diameter (D a ) and a pore volume (AV Hg ) which make both the roughness factor (RF) and aggregate factor...
4770867 Process for the production of carbon fibres which are vapor-deposited from methane  
The invention concerns a process for the production of vapor-deposited carbon fibres wherein a gaseous or vaporized hydrocarbon which is entrained by a carrier gas is pyrolyzed on a substrate in a...
4767737 Method for making carbonaceous materials  
A fluidized bed disproportionation of carbon monoxide is effected using ferrous metal component-containing catalysts in particulate form. The bed also contains an abradant to continuously remove...
4766013 Carbon composite article and method of making same  
A composite structural ceramic article and method of fabrication thereof. The article of the invention is specifically designed for use in high temperature, corrosive and erosive environments such...
4749557 Graphite fiber growth employing nuclei derived from iron pentacarbonyl  
Submicron iron nuclei for growing graphite fibers by pyrolysis of a gaseous hydrocarbon compound, preferably methane, are formed by controlled decomposition of iron pentacarbonyl vapors.
4664900 Electrically conductive compositions  
An electrically conductive composition comprises 100 parts by weight of synthetic resin and/or rubber, 5 to 100 parts by weight of a conductivity-affording agent, and 1 to 100 parts by weight of...
4650657 Method for making carbonaceous materials  
A fluidized bed disproportionation of carbon monoxide is effected using ferrous metal component-containing catalysts in particulate form. The bed also contains an abradant to continuously remove...
4572813 Process for preparing fine carbon fibers in a gaseous phase reaction  
A process of preparing carbon fibers in a floating state by reacting a mixed gas consisted of a gas of organic metal compound or compounds, a carrier gas and desirably a gas of carbon compound or...
4565684 Regulation of pyrolysis methane concentration in the manufacture of graphite fibers  
In a preferred embodiment, graphite fibers are grown on a suitably nucleated ceramic surface by passing a methane gas stream over the surface at an elevated temperature. Initially, the methane...
4565683 Production of carbon filaments  
Disclosed is a method for producing carbon filaments by dissociating a carbon-containing gas at a temperature to about 800° C. in the presence of iron monoxide. The iron monoxide can be produced...
Matches 151 - 200 out of 222 < 1 2 3 4 5 >