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5976697 Process for manufacturing a molded article made of high density carbon  
The invention relates to a process for manufacturing an article of a high-density carbon. To produce an un-fired compact, binderless, self-sintering, fine-grained carbon powder, particularly carbon...
5965470 Composites containing surface treated carbon microfibers  
A method of oxidizing the surface of carbon microfibers that includes contacting the microfibers with an oxidizing agent that includes sulfuric acid and potassium chlorate under reaction conditions...
5951959 Mesophase pitch-based carbon fiber for use in negative electrode of secondary battery and process for producing the same  
A mesophase pitch-based carbon fiber for use as a material for a negative electrode of a secondary battery, and a process for producing the same. The mesophase pitch-based carbon fiber comprises a...
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...
5874166 Treated carbon fibers with improved performance for electrochemical and chemical applications  
A treated mesophase carbon fiber is disclosed having a high density of exposed edges on the fiber surface, and a method of making such a treated fiber. A carbon electrode is also described which is...
5868967 Carbon thread and process for producing it  
In a carbon thread, vapor phase growth carbon fiber (VGCF) are dispersedly contained in a carbon matrix. The carbon thread is produced by forming a thread-like element from a mixture of VGCF and...
5851504 Carbon based electrodes  
Provided by the present invention is a new anode material comprised of a carbon obtained by pyrolyzing a polymer of a conjugated vinyl monomer. The carbon is suitable for a lithium intercalated...
5840265 Carbon fibers and process for their production  
Pitch based carbon fibers characterized in that their thermal conductivity is at least 1,000 W/mK as measured at room temperature, their electrical resistivity is at most 1.2 μΩm, their...
5837644 Surface hydrophobic active carbon and method for production thereof  
A surface hydrophobic active carbon is disclosed which has undergone a treatment with trimethyl chlorosilane and exhibits a silicon concentration on the surface thereof, Si 2p /C 1s , in the range...
5821012 Secondary energy storage device and electrode employing a multiplicity of flexible biregional fibers  
An electrode is disclosed comprising a multiplicity of flexible biregional fibers, each fiber having an inner core region of a thermoplastic polymeric composition and a surrounding outer region of...
5820788 Electroconductive antistatic polymers containing carbonaceous fibers  
The present invention relates to antistatic polymers containing a mixture of a thermoplastic resin and about 8-20% by weight of conductive partially carbonized chopped linear carbonaceous fibers....
5795843 Pitch-based activated carbon fiber  
There is provided an optically isotropic pitch-based activated carbon fiber which comprises having a large number of pores each with a radius of 0.15 to 2.5 nm and having a specific surface area of...
5792577 Negative electrode material for use in lithium-ion secondary battery and process for producing the same  
A negative electrode material for use in lithium-ion secondary batteries, comprising milled pitch-based graphite fibers (A) obtained by graphitization at 2400° C. or higher and milled pitch-based...
5772974 Carbonaceous electrode material for battery and process for production thereof  
A battery electrode material having a large charge-discharge capacity and capable of providing a (non-aqueous solvent-type secondary) battery of a high energy density is provided in the form of a...
5733484 Method for manufacturing carbon preform and carbon/carbon composite material  
A method for manufacturing a carbon preform comprising the steps of charging a container with pitch fibers obtained by melt spinning a carbonaceous pitch to fill therein during spinning,...
5721308 Pitch based carbon fiber and process for producing the same  
A pitch based carbon fiber, having a thermal conductivity in the direction of the fiber axis of from 500 to 1,500 W/mK, a tensile modulus of at least 85 ton/mm 2 , a compression strength of at...
5698341 Carbon material for lithium secondary battery and process for producing the same  
A carbon material for use in a lithium secondary battery, which is obtained by graphitization conducted in the presence of a boric compound so as to contain boron in an amount ranging from 1,000...
5695816 Process for the preparation of carbon fiber reinforced carbon composites  
The present invention aims at preventing or reducing the lowering in mechanical characteristics of a carbon fiber reinforced carbon composite due to stress orientation caused by the use of a...
5691054 Three dimensional macroscopic assemblages of randomly oriented carbon fibrils and composites containing same  
It has now been found that highly advantageous three-dimensional, macroscopic assemblages of randomly oriented carbon fibrils can be prepared which have relatively uniform physical properties along...
5677084 Electrode and secondary battery using the same  
The invention relates to an electrode suitable for a chargeable/dischargeable secondary battery in which a carbonaceous material capable of doping and dedoping of lithium ions is used as a negative...
5653951 Storage of hydrogen in layered nanostructures  
The present invention relates to the storage of hydrogen in layered nanostructures possessing: at least some crystallinity, interstices from about 0.335 nm to 0.67 nm, and chemisorption properties...
5652058 Carbon fiber rovings for reinforcement of concrete  
Carbon fiber rovings for reinforcement of concrete are here disclosed which are obtained by sizing, with a sizing agent, strands each consisting of 100 to 1,000 monofilaments of mesophase...
5648056 Fullerene composite  
A fullerene composite comprises a matrix formed of ultrafine fullerene such as, for example, C 60 crystallite having diameters in the range of from 5 to 50 nm and a reinforcing member formed of a...
5643546 Pitch-type carbon fibers and process for their production  
A pitch-type carbon fiber made from a pitch having 1 a glass transition temperature width of at most 40° C. as measured by a differential scanning calorimeter, 2 a proportion of the optically...
5641466 Method of purifying carbon nanotubes  
A mixture of carbon nanotubes and impurity carbon materials, which include carbon nanoparticles and may possibly include amorphous carbon, is purified into carbon nanotubes of high purity by...
5639807 Process for manufacturing carbon fiber pellets, the high density, streamlined pellets resulting therefrom and process for producing reinforced thermoplastic resins employing the pellets  
Carbon fiber pellets having improved flow characteristics are prepared by mixing chopped or milled carbon fibers with a solution or suspension of a sizing agent, shaping the agglomerated mixture on...
5627353 Spheres containing active compounds, their synthesis and the method of opening the spheres  
Spheres with a tetrahedral, octahedral and icosohedral geometry containing active compounds, wherein the spheres embrace the same volume as the fullerenes of the same symmetry, and are described by...
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....
5593776 Fluororesin composites  
The fluororesin composite material with high mechanical strength characteristics and wear resistance comprising 99 to 40 parts by weight of a fluororesin, e.g. polytetrafluoroethylene, and 1 to 60...
5560898 Process of isolating carbon nanotubes from a mixture containing carbon nanotubes and graphite particles  
Carbon nanotubes are isolated from a mixture containing the carbon nanotubes and graphite particles by a process including the steps of: finely pulverizing the mixture; dispersing the pulverized...
5554354 Carbon fiber-reinforced carbon composite material and process for producing the same  
Disclosed herein is a carbon fiber-reinforced carbon composite material which comprises a carbon fiber reinforcement in the form of nonwoven fabric and a matrix composed of an adhesion promoting...
5532083 Flexible carbon fiber electrode with low modulus and high electrical conductivity, battery employing the carbon fiber electrode, and method of manufacture  
A novel flexible carbon article for an electrode is disclosed for use in an electrical storage device in which the flexible carbon article, such as a planar sheet of a plurality of substantially...
5531943 Method of making a carbon/metal composite  
An improved carbon/metal composite which includes a carbon matrix and metal fibers distributed in the carbon matrix. The improvement is that the metal fibers are selected from (A) metal fibers in...
5518836 Flexible carbon fiber, carbon fiber electrode and secondary energy storage devices  
A novel flexible carbon fiber is disclosed which has a generally non-circular or tubular cross-sectional shape, a Young's modulus of from greater than 1 MM psi (6.9 GPa) to 55 MM psi (380 GPa), and...
5503893 Ultra-high performance carbon composites  
Method of fabricating a multi-ply carbon fibre fabric, preform or composite material from a layer of unidirectionally aligned carbon fibres of ultra-high modulus and a layer of low modulus carbon...
5494567 Process for producing carbon materials  
A process for producing an optically isotropic reformed pitch useful for various carbon materials is provided. This process comprises mixing a pitch having a ratio of aromatic hydrocarbon fa of...
5490892 Method of fabricating a composite material part, in particular a sandwich panel, from a plurality of assembled-together preforms  
Distinct preforms are made for different portions of a composite material part that is to be fabricated, and they are assembled together in a non-densified state or in a state that is not...
5489422 Process for coating carbon fiber reinforced carbon  
In order to have carbon fiber reinforced carbon resistant to oxidation, the proposal is for a process by means of which a bonding layer of amorphous SiNx is applied to the carbon fiber reinforced...
5457343 Carbon nanotubule enclosing a foreign material  
The invention provides a nanometer sized carbon tubule enclosing a foreign material except for carbon. The carbon tubule comprises a plurality of tubular graphite monoatomic sheets coaxially...
5437821 Process for making carbon-carbon composites by using acetylene terminated conjugated Schiff's base monomers  
Carbon-carbon composites of acceptable shrinkage and with negligible voids re prepared in a single casting step from acetylene-terminated Schiff's base monomers by melting a selected monomer,...
5437927 Pitch carbon fiber spinning process  
Use of a ribbon shaped flow configuration at the entrance to a round spinneret used for spinning carbon fibers from mesophase pitch promotes the formation of random microstructure and prevents...
5425931 Small diameter pitch-based carbon fiber bundle and production method thereof  
A bundle of pitch-based carbon fibers which is composed of 1000 to 100,000 continuous fiber filaments having an average diameter of 4 to 8 μm, a filament tensile strength of at least 3.0 GPa, and...
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.
5395607 High compressive strength pitch based carbon fiber  
The pitch based carbon fiber has a uniform crystal structure in which substantially all crystal fibriles constituting the fiber have the thickness ranging from 30 to 200% of the average thickness...
5380475 Process for manufacturing an oxidation-stable component on a CFC base, particularly for space travel  
For the manufacturing of an oxidation-stable component that can withstand temperature changes for space travel, a solid CFC-body with a density of from 0.1 to 0.8 g/cm 3 , which has nondirectional...
5370856 High strength carbon fiber and pre-carbonized fiber  
A graphitized fiber heat-treated at a temperature higher than 2300° C. in an inert atmosphere, of which oxidation weight reduction rate A in dry air at 650° C. is in the range defined by the...
5364571 Method of making a composite material  
Net shape composite articles are made by a molding process. The molded preform is densified in a process where the rate of temperature increase is controlled to prevent distortion. The densified...
5348802 Carbon fiber made from acrylic fiber and process for production thereof  
Disclosed is a carbon fiber made from an acrylic fiber, the carbon crystal of which has a crystal size Lc of 15 to 65 Å as determined by the wide angle X-ray diffractometry. This carbon fiber has...
5346683 Uncapped and thinned carbon nanotubes and process  
Uncapped and thinned carbon nanotubes are produced by reaction with a flowing reactant gas capable of reaction selectively with carbon atoms in the capped region of nanotubes. The uncapped and...
5336557 Carbon fiber felting material and process for producing the same  
The disclosed carbon fiber felting material has a bulk density of 0.01 to 0.5 g/cm 3 and a thermal conductivity of at most 1.0 kcal/mhr°C. in the thickness-wise direction thereof at 2,200°...
Matches 151 - 200 out of 360 < 1 2 3 4 5 6 7 8 >