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...When G.G. Hubbard learned of his future son-in-law's invention, he called it "only a toy." His daughter was engaged to a young man named Alexander Graham Bell.
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| Number | Title | Issue Date |
| 7625545 | Process for producing carbon nanotubes by arc discharge A process for producing a tape-like material uniformly containing highly pure single-walled or multi-walled carbon nanotubes and a tape-like material produced thereby; a high-performance field emission electrode including the tape-like material; and a process for pr... | 12/01/2009 |
| 7442358 | Flaky carbonaceous particle and production method thereof A carbonaceous particle is provided which comprises a hexagonal flake formed of an aggregate of a plurality of nanocarbons and having a side length of 0.1 to 100 mm and a thickness of 10 nm to 1 mm. Thereby, a carbonaceous particle is provided which has an excellent... | 10/28/2008 |
| 7351390 | Method and installation for heat treating carbon bodies containing sodium Carbon bodies are heated in an oven under low pressure and while being swept with an inert gas, gaseous effluent containing elemental or compound sodium in sublimed form being continuously extracted from the oven via an effluent exhaust pipe. At least one sodium-neu... | 04/01/2008 |
| 7150911 | Electrical insulating vapor grown carbon fiber and method for producing the same, and use thereof An electrical insulating vapor grown carbon fiber containing a vapor grown carbon fiber having a fiber diameter of 0.01 to 0.5 μm, wherein the surface thereof is partially or entirely coated with an electrical insulating material and a method of producing thereof i... | 12/19/2006 |
| 7090819 | Gas-phase process for purifying single-wall carbon nanotubes and compositions thereof The present invention relates to an all gas-phase process for the purification of single-wall carbon nanotubes and the purified single-wall carbon nanotube material. Known methods of single-wall carbon nanotube production result in a single-wall carbon nanotube prod... | 08/15/2006 |
| 7029646 | Method for cutting single-wall carbon nanotubes through fluorination A method for cutting single-wall carbon nanotubes involves partially fluorinating single-wall carbon nanotubes and pyrolyzing the partially fluorinated nanotubes in an inert atmosphere or vacuum up to about 1000° C. The nanotubes are optionally purified before cutt... | 04/18/2006 |
| 6967014 | Method of obtaining a carbon fiber fabric by continuously carbonizing a cellulose fiber fabric The carbonization of cellulose fiber fabric comprises an initial stage of heat treatment up to 250° C. to 350° C., with a relatively high mean temperature rise speed of 10° C./min to 60° C./min, an intermediate stage up to 350° C. to 500° C. with a lower mean ... | 11/22/2005 |
| 6713423 | Method for reactivating activated carbon and activating carbon The present invention generally relates to a method of thermally reactivating activated carbon via a two-step process: steam followed by pyrolysis; whereby the steam is preferably deoxygenated. Activated carbons reactivated by this method resemble their virgin count... | 03/30/2004 |
| 6702963 | Method of producing a polarizable electrode A polarizable electrode (1) includes an activated carbon/carbon composite consisting essentially of an activated carbon component and a carbon component. The activated carbon component includes activated carbon powder or fiber. The carbon component is pro... | 03/09/2004 |
| 6635199 | Process for producing a precursor fiber bundle and a carbon fiber bundle A separable tow of elongated polymeric filaments comprises a plurality of distinct sub-tows lightly and individually and separably joined, as by light crimping together along their edges or, if uncrimped, joined by presence of moisture, and capable of bei... | 10/21/2003 |
| 6632849 | Porous carbonized film and process for its production A porous carbonized film with fine continuous pores, obtained by carbonization of a highly heat-resistant resin porous film in an anaerobic atmosphere, and a process for its production.... | 10/14/2003 |
| 6602486 | Method for separating and treating exhaust gas of carbon fiber A method for producing carbon fiber including the following processes: a process for obtaining fine carbon fiber by thermally decomposing an organic compound in a furnace by use of a catalyst; a process for separating a reaction exhaust gas contained in t... | 08/05/2003 |
| 6589904 | Activated carbon and method for producing it The present invention provides an activated carbon produced by a process, which includes: activating a carbonaceous material, to obtain an activated carbonaceous material; and contacting the activated carbonaceous material with an acid. Another embodiment of t... | 07/08/2003 |
| 6584279 | Heater sealed with carbon wire heating element A heater sealed with carbon wire heating element has a carbon wire heating element sealed with a quartz glass member, the carbon wire being prepared by knitting carbon single fibers into a knitted cord of a braid, each wire having a crystal structure with... | 06/24/2003 |
| 6582588 | High temperature, low oxidation stabilization of pitch fibers The present invention provides a process for thermosetting pitch fibers in reduced times, at low concentrations of oxygen and at higher temperatures than previously possible. Additionally, the present invention provides a pitch fiber which has an oxygen d... | 06/24/2003 |
| 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 small size, a pitch fiber bundle, and a carbon fiber bundl... | 02/25/2003 |
| 6517800 | Production of single-walled carbon nanotubes by a hydrogen arc discharge method A method for producing a single-walled carbon nanotube product by a hydrogen arc discharge method includes providing an anode including graphite powder, catalyst metal, and a growth promoter in an atmosphere containing hydrogen; providing a cathode in the... | 02/11/2003 |
| 6479030 | Carbon electrode material Sulfonated carbon fibrils, method for preparing the sulfonated carbon fibrils, and electrodes prepared from the sulfonated carbon fibrils for use in supercapacitors or other energy storage devices are disclosed.... | 11/12/2002 |
| 6464950 | Method for separating and treating exhaust gas of carbon fiber A method for producing carbon fiber including the following processes: a process for obtaining fine carbon fiber by thermally decomposing an organic compound in a furnace by use of a catalyst; a process for separating a reaction exhaust gas contained in t... | 10/15/2002 |
| 6372192 | Carbon fiber manufacturing via plasma technology The disclosed invention introduces a novel method of manufacturing carbon and/or graphite fibers that avoids the high costs associated with conventional carbonization processes. The method of the present invention avoids these costs by utilizing plasma te... | 04/16/2002 |
| 6331224 | Method for manufacturing carbon sheet A method for manufacturing a carbon sheet, particularly for an electrode of a fuel cell, includes the steps of forming a sheet by mixing carbon fibers and a bonding agent; drying the formed sheet; immersing the dried formed sheet in a water repellent mate... | 12/18/2001 |
| 6261485 | Pitch-based carbon foam and composites A process for producing carbon foam or a composite is disclosed which obviates the need for conventional oxidative stabilization. The process employs mesophase or isotropic pitch and a simplified process using a single mold. The foam has a relatively unif... | 07/17/2001 |
| 6241923 | Process for the production of carbon fibers A process for the production of carbon fibers, including melt-spinning mesophase pitch having an optically anisotropic content of at least 90%, a softening point of 190° C. to 280° C. and a heating weight loss of 0.7% by weight or less at a spinning tem... | 06/05/2001 |
| 6235674 | Carbon fibrils, methods 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 3.5 to 70 nanometers and are substantially free of pyroly... | 05/22/2001 |
| 6171696 | Method for producing carbon fiber, carbon fiber, prepreg, and molded article from fiber-reinforced composite material The resent invention provides a carbon fiber which enables a molded article produced from a fiber-reinforced composite material using the carbon fiber to exhibit excellent flexibility and to be freed from defects such as bending. According to the method o... | 01/09/2001 |
| 6156287 | Method for preparing pan-based activated carbon fabrics PAN-based oxidized fabrics are activated by heating at a temperature of 700-1000° C. for 1 minute to 1 hour with the introduction of moisturized carbon dioxide gas. The resulting PAN-based activated fabrics are suitable for use as adsorption materials.... | 12/05/2000 |
| 6113819 | Three dimensional interpenetrating networks of macroscopic assemblages of oriented carbon fibrils and organic polymers The invention relates to an interpenetrating network of carbon fibrils and a polymer, which comprises a rigidized, three-dimensional macroscopic assemblage of a multiplicity of randomly oriented carbon fibrils and an innerpenetrating mass of an organic po... | 09/05/2000 |
| 6099965 | Rigid porous carbon structures, methods of making, methods of using and products containing same This invention relates to rigid porous carbon structures and to methods of making same. The rigid porous structures have a high surface area which are substantially free of micropores. Methods for improving the rigidity of the carbon structures include ca... | 08/08/2000 |
| 6051167 | Process of making carbon-carbon composites A carbon composite structure, for example, an automotive engine piston, is made by preparing a matrix including of a mixture of non crystalline carbon particulate soluble in an organic solvent and a binder that has a liquid phase. The non crystalline part... | 04/18/2000 |
| 5990041 | Mesoporous activated carbon filaments This invention relates to a mesoporous carbon material in the form of filaments having a high surface area. A process is also provided to produce mesoporous carbon material of high surface area. The process comprises drying a carbon material, surface oxid... | 11/23/1999 |
| 5985232 | Production of fullerenic nanostructures in flames A method for the production of fullerenic nanostructures is described in which unsaturated hydrocarbon fuel and oxygen are combusted in a burner chamber at a sub-atmospheric pressure, thereby establishing a flame. The condensibles of the flame are collect... | 11/16/1999 |
| 5985446 | Acetylenic carbon allotrope A fourth allotrope of carbon, an acetylenic carbon allotrope, is described. The acetylenic carbon allotropes of the present invention are more soluble than the other known carbon allotropes in many common organic solvents and possesses other desirable cha... | 11/16/1999 |
| 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 materials, knitted fabrics, felts, or non-woven fabrics, into t... | 12/29/1998 |
| 5843393 | Carbon electrode material for electrochemical cells and method of making same A method (50) of fabricating an amorphous carbon material for use as an electrode (20) in a rechargeable electrochemical cell (10) includes the steps of heating (62) a lignin material until it has fully cured, comminuting (68) the lignin material before i... | 12/01/1998 |
| 5834114 | Coated absorbent fibers Fiber material for adsorbing contaminants is prepared according to the steps of preparing coating a glass or mineral fiber substrate with a resin, cross-linking the resin, heating the coated fiber substrate and resin to carbonize the resin, and exposing t... | 11/10/1998 |
| 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 carbonaceous material having a microtexture suitable for do... | 06/30/1998 |
| 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 thermosetting resin as a carbon matrix precursor resin to thereb... | 12/09/1997 |
| 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 parts by weight of a carbon fiber wherein the carbon fiber... | 01/14/1997 |
| 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 which the surfaces of at least a portion of the fibers are ... | 07/02/1996 |
| 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 carbon to which in turn is applied a protective layer which... | 02/06/1996 |
