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| Number | Title | Issue Date |
| 8187566 | Continuous method and apparatus of functionalizing carbon nanotube The present invention relates to a continuous method for functionalizing a carbon nanotube, and more specifically, to a continuous method for functionalizing a carbon nanotube by feeding functional compounds having one or more functional group into a functionalizing... | 05/29/2012 |
| 8119095 | Composite sintering materials using carbon nanotube and manufacturing method thereof The present invention relates to a composite sintering materials using a carbon nanotube (including carbide nano particles, hereinafter the same) and a manufacturing method thereof, the method comprises the steps of: combining or generating carbon nanotubes in metal... | 02/21/2012 |
| 8092775 | Continuous method for purifying carbon nanotube Provided is a continuous method and apparatus for purifying carbon nanotubes. Carbon nanotube is fed together with solvent into a preheater via a heat exchanger to produce a carbon nanotube mixture. The carbon nanotube mixture is preheated at 100 to 370° C. Then, t... | 01/10/2012 |
| 7998450 | Continuous methods and apparatus of functionalizing carbon nanotube The present invention relates to a continuous method and apparatus of functionalizing a carbon nanotube, and more specifically, to a continuous method of functionalizing a carbon nanotube under subcritical water or supercritical water conditions without additional f... | 08/16/2011 |
| 7879308 | Multiwall carbon nanotube field emitter fabricated by focused ion beam technique A multi-wall carbon nanotube field emitter and method of producing the same is disclosed. The multi-wall carbon nanotube field emitter comprises a nanotube having a diameter between approximately 1 nanometer and approximately 100 nanometers with an integrally attach... | 02/01/2011 |
| 7524479 | Method for producing vapor grown carbon fiber A method for producing vapor grown carbon, including mixing a raw material gas containing an organic compound and an organo-transition metallic compound preliminarily heated preferably to a temperature of 100 to 450° C. with a carrier gas heated preferably to a tem... | 04/28/2009 |
| 7410630 | Method and an installation for obtaining carbon bodies from carbon-precursor bodies The method comprises a first stage of transforming carbon precursor material into carbon by heating, with the resulting gaseous effluent being extracted continuously, and a second stage of high temperature heat treatment under low pressure with the resulting gaseous... | 08/12/2008 |
| 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 |
| 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 |
| 6576212 | Process for the production of carbonized material A process of producing a carbonized material, which includes a step of treating the biomass with a microwave for a period of time sufficient to carbonize an inner region thereof but insufficient to carbonize an outer region thereof, thereby obtaining a pa... | 06/10/2003 |
| 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 |
| 6500401 | Carbon foams and methods of making the same A method of making carbon foam is described which involves pyrolizing a mixture containing at least one pyrolizable substance and at least one unpyrolizable material and then removing the unpyrolizable material to obtain the carbon foam. Carbon foam made ... | 12/31/2002 |
| 6299850 | Carbon activation process for increased surface accessibility in electrochemical capacitors A process for making carbon film or powder suitable for double capacitor electrodes having a capacitance of up to about 300 F/cm3 is disclosed. This is accomplished by treating in aqueous nitric acid for a period of about 5 to 15 minutes thin c... | 10/09/2001 |
| 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 |
| 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 |
| 6129868 | Fast process for the production of fiber preforms A thermomechanical pressing ("TMP") method for obtaining rapidly a high density (1.2 g/cm3 or higher) carbon/carbon composite preform from any carbon fiber including PAN-based carbon fibers and industrial coal-tar or petroleum pitches (includin... | 10/10/2000 |
| 6123829 | 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... | 09/26/2000 |
| 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 |
| 6103211 | Carbon fibers, acrylic fibers, and production processes thereof The object of the present invention is to provide carbon fibers with high tensile strength as a resin impregnated strand even if the single filaments constituting the carbon fibers are thick. The carbon fibers of the present invention consisting of a plur... | 08/15/2000 |
| 6077463 | Process for producing graphite material for negative electrode used in lithium secondary battery A process for producing graphite materials for a negative electrode used in a lithium secondary battery which process includes the steps of packing carbon materials having an average particle diameter of 5 to 50 μm in a plurality of boxes, placing the bo... | 06/20/2000 |
| 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 |
| 5763103 | Biregional precursor fiber having an outer oxidation stabilized region and method of manufacture A novel flexible biregional carbonaceous fiber is disclosed comprising an inner core region of a thermoplastic polymeric material and an outer region of a carbonaceous sheath. The flexible biregional carbonaceous fibers are particularly characterized by h... | 06/09/1998 |
| 5726105 | Composite article The graphitized composite article of the present invention is formed by embedding carbon fiber felt in a matrix of a carbon filler; a thermosetting resin and a solvent; curing the composite article; then, carbonizing and graphitizing the cured composite a... | 03/10/1998 |
| 5622660 | Process for producing carbon fiber fabrics A process for producing a process for producing a two- or three-dimensional carbon fabric, which process includes melt-spinning (a) an optically anisotropic carbonaceous pitch having an optically anisotropic phase content of 60 to 100%, subjecting the thu... | 04/22/1997 |
| 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 |
| 5510063 | Method of making activated carbon honeycombs having varying adsorption capacities An activated carbon body having flow-through channels and method of making the body. The method involves combining and shaping channel-forming material and optionally fugitive pore-forming material and non-fugitive support material, and a crosslinkable re... | 04/23/1996 |
| 5503783 | Process of making a spring member A spring member made of a carbon fibers/carbon composite material in which carbon fibers are dispersed in a matrix of graphite, and a process for producing such a spring member. The process includes the steps of: (a) forming raw preformed yarns; (b) shapi... | 04/02/1996 |
| 5407614 | Process of making pitch-based carbon fibers Carbon fibers are provided essentially consisting of liquid crystal pitch based continuous monofilaments having an average filament diameter of 30 μm or greater. The carbon fibers can have modulus of elasticity of 80,000 Kgf/mm2 or greater and... | 04/18/1995 |
| 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 composite objects are impregnated with a secondary material ... | 11/15/1994 |
| 5360500 | Method of producing light-weight high-strength stiff panels A method for the manufacture of a light-weight panel, e.g. for aircraft, comprising preparing a panel preform having a pair of surface members or skins separated and supported by an internal core in which spaces or interconnected pores provide vents to an... | 11/01/1994 |
| 5356574 | Process for producing pitch based activated carbon fibers and carbon fibers A process for providing activated carbon fibers consisting of optically anisotropic components and optically isotropic components by spinning a pitch into fibers, and infusibilizing the resulting fibers, followed by an activation treatment. The pitch for ... | 10/18/1994 |
| 5348719 | Process for producing carbon fibers having high strand strength A process for producing carbon fibers having high strand strength, which comprises subjecting pitch fibers obtained by melt-spinning pitch, followed by gathering, to infusible treatment to obtain infusible fibers, followed by carbonization treatment, and ... | 09/20/1994 |
| 5312611 | Lithium secondary battery process for making carbonaceous material for a negative electrode of lithium secondary battery A lithium secondary battery which comprises a vessel, a positive electrode, a negative electrode and an electrolyte. Both of the electrodes are placed in the vessel and the vessel is filled with the electrolyte. The negative electrode includes carbonaceou... | 05/17/1994 |
| 5294383 | Process of making shaped members length made from carbon-carbon composite materials The process includes impregnating carbon threads with molten pitch in an impregnation tank 4, shaping them by means of a short die 8, subjecting the so thread to thermal treatment by progressive heating while it is continuously passed through a treatment ... | 03/15/1994 |
| 5292408 | Pitch-based high-modulus carbon fibers and method of producing same The present invention provides an improvement in the process of producing pitch-based carbon fibers comprising the steps of spinning a spinnable pitch, treating the resulting pitch fibers for rendering infusible, and carbonizing the same, the improvement ... | 03/08/1994 |
| 5283113 | Process for producing carbon fiber felt There is disclosed a process for continuously producing a pitch-based carbon fiber felt which comprises the steps of spinning a pitch by melt blow spinning system; accumulating the spun fibers as a pitch fiber web composed of the aggregate of short fibers... | 02/01/1994 |
