Bunshi
Bunshi Fugetsu, Hokkaido JP
Patent application number | Description | Published |
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20100261028 | COMPOSITE METAL MATERIAL AND METHOD FOR PRODUCING THE SAME - A method for producing a composite metal material includes preparing a solution containing a surfactant having both hydrophilicity and hydrophobicity, dispersing a nanosized to micro-sized fine carbonaceous substance into a state of being monodispersed in the solution, bringing the solution having the dispersed fine carbonaceous substance into contact with surface of a metal powder particle, drying the metal powder particle to make the fine carbonaceous substance in the monodispersed state adhere to the surface of the metal powder particle via a component of the solution, and thermally decomposing and removing the solution component adhering to the surface of the metal powder particle by heat-treating the metal powder particle either in a hydrogen-containing reducing atmosphere or in a vacuum atmosphere to partially expose the surface of the metal powder particle out of the adhering fine carbonaceous substance, and thus progress diffusion and sintering among the metal powder particles through exposed parts. | 10-14-2010 |
20110036829 | PLANAR HEATING ELEMENT OBTAINED USING DISPERSION OF FINE CARBON FIBERS IN WATER AND PROCESS FOR PRODUCING THE PLANAR HEATING ELEMENT - [Problems] To produce planar heating elements having high exothermic efficiency and provide energy-saving electric carpets, floor heating, wall surface heating appliances and heaters for thawing on roads and/or roofs or antifogging for mirrors. | 02-17-2011 |
20110151254 | ELECTRO-CONDUCTIVE FIBERS WITH CARBON NANOTUBES ADHERED THERETO, ELECTRO-CONDUCTIVE YARN, FIBERS STRUCTURAL OBJECT, AND PRODUCTION PROCESSES THEREOF - Electro-conductive fibers comprise synthetic fibers and an electro-conductive layer containing carbon nanotubes and covering a surface of the synthetic fibers, and the coverage of the electro-conductive layer relative to the whole surface of the synthetic fibers is not less than 60% (particularly not less than 90%). The electric resistance value of the electro-conductive fibers ranges from 1×10 | 06-23-2011 |
20110311430 | PROCESS FOR PRODUCTION OF PRECURSOR FIBER FOR PREPARING CARBON FIBER HAVING HIGH STRENGTH AND HIGH ELASTIC MODULUS - The present invention provides a process for producing a precursor fiber which can provide a carbon fiber having high strength and high elastic modulus. The process of the present invention comprises a step where an aqueous solution of amphoteric molecule is prepared; a step where carbon nanotube is added to the aqueous solution of the amphoteric molecule so that the carbon nanotube is dispersed therein to prepare a dispersion of carbon nanotube; a step where the carbon nanotube dispersion is mixed with a polyacrylonitrile polymer and rhodanate or zinc chloride to prepare a spinning dope; a step where a coagulated yarn is prepared from the spinning dope by a wet or dry-wet spinning method; and a step where the coagulated yarn is drawn to give a precursor fiber for carbon fiber. | 12-22-2011 |
20120315459 | CARBON NANOTUBE SHEET AND PROCESS FOR PRODUCTION THEREOF - A carbon nanotube sheet of the present invention includes carbon nanotubes and a polymeric material, wherein the carbon nanotubes are present in an isolated state, the axis directions of the carbon nanotubes are aligned m a thickness direction of the carbon nanotube sheet, and the space between the carbon nanotubes is filled with the polymeric material. | 12-13-2012 |
Bunshi Fugetsu, Sapporo-Shi JP
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20100329966 | FINE CARBON FIBER AGGREGATE MASS FOR REDISPERSION AND PROCESS FOR PRODUCTION THEREOF - The disclosed is a redispersible agglomerate of fine carbon fibers, which is obtained by adding the fine carbon fibers and a dispersing agent which shows solid state at least at ordinary temperature (20±10° C.) into an aqueous dispersion medium, and then removing the dispersion medium from a dispersion system where the carbon fibers are isolated individually and dispersed in the dispersion medium; and in which the carbon fibers are got together and solidified in the agglomerate while each carbon fiber maintains its isolated dispersibility; | 12-30-2010 |
20120315065 | ELECTRO-CONDUCTIVE MULTIFILAMENT YARN AND ELECTRO-CONDUCTIVE BRUSH - An electro-conductive multifilament yarn for forming an electro-conductive brush comprises an electro-conductive fiber containing a synthetic fiber and a carbon nanotube covering a surface of the fiber. The synthetic fiber may have a single-filament fineness of not more than 30 dtex. The synthetic fiber may have 3 to 6 elongated recesses or grooves extending in a longitudinal direction thereof and have a multi-leaves or star-shaped cross-section. The electro-conductive multifilament yarn of the present invention has a high electro-conductivity and may have an electric resistance value of 1×10 | 12-13-2012 |
20130015409 | GRAPHENE OXIDE SHEET, ARTICLE CONTAINING GRAPHENE-CONTAINING SUBSTANCE PRODUCED BY REDUCING THE GRAPHENE OXIDE SHEET, AND PROCESS FOR PRODUCTION OF THE GRAPHENE OXIDE SHEETAANM Fugetsu; BunshiAACI Sapporo-shiAACO JPAAGP Fugetsu; Bunshi Sapporo-shi JP - [Means for solving] | 01-17-2013 |
Bunshi Kato, Tokyo JP
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20090065102 | High Strength Seamless Steel Pipe for Machine Structure Use Superior in Toughness and Weldability, and Method of Production of The Same - A high strength seamless steel pipe for machine structure use superior in toughness and weldability characterized by containing, by mass %, C: 0.03 to less than 0.1%, Mn: 0.8 to 2.5%, Ti: 0.005 to 0.035%, Nb: 0.003 to 0.04%, and B: 0.0003 to 0.003%, limiting Si: 0.5% or less, Al: 0.05% or less, P: 0.015% or less, S: 0.008% or less, and N: 0.008% or less, further containing one or more of Ni: 0.1 to 1.5%, Cr: 0.1 to 1.5%, Cu: 0.1 to 1.0%, and Mo: 0.05 to 0.5%, and having a balance of Fe and unavoidable impurities, the metallurgical structure being a single phase structure of self-tempered martensite or a mixed phase structure of self-tempered martensite and lower bainite. | 03-12-2009 |