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Hirofumi Fukuoka, Annaka-Shi JP

Hirofumi Fukuoka, Annaka-Shi JP

Patent application numberDescriptionPublished
20080241475GRAPHITE-SILICON CARBIDE COMPOSITE AND MAKING METHOD - A graphite-silicon carbide composite comprises a graphite substrate and a silicon carbide layer formed thereon and comprising silicon carbide particles in fused and contact bonded state. The composite has excellent oxidation resistance and finds a wide range of application as heat resistant material. The method of forming a silicon carbide layer on graphite surface is simple and consistent.10-02-2008
20080254287SILICON CARBIDE-SILICON CARBIDE FIBER COMPOSITE AND MAKING METHOD - A silicon carbide-silicon carbide fiber composite consists of silicon carbide particles and silicon carbide fibers. The composite has excellent oxidation resistance and finds a wide range of application as heat resistant material. The silicon carbide conversion method is simple and consistent enough to ensure production of silicon carbide-silicon carbide fiber composites with minimized variation in quality.10-16-2008
20090202911NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY NEGATIVE ELECTRODE MATERIAL, MAKING METHOD, LITHIUM ION SECONDARY BATTERY, AND ELECTROCHEMICAL CAPACITOR - A negative electrode material comprises a conductive powder of particles of a lithium ion-occluding and releasing material coated on their surface with a graphite coating. The graphite coating, on Raman spectroscopy analysis, develops broad peaks having an intensity I08-13-2009
20090232721SINTERED SILICON OXIDE FOR FILM VAPOR DEPOSITION, ITS PRODUCTION METHOD, AND METHOD FOR PRODUCING SILICON OXIDE VAPOR DEPOSITION FILM - A sintered silicon oxide for film vapor deposition having a density of 1.0 to 2.0 g/cm09-17-2009
20090239151NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, NEGATIVE ELECTRODE MATERIAL, AND MAKING METHOD - A negative electrode material comprising an active material and 1-20 wt % of a polyimide resin binder is suitable for use in non-aqueous electrolyte secondary batteries. The active material comprises silicon oxide particles and 1-50 wt % of silicon particles. The negative electrode exhibits improved cycle performance while maintaining the high battery capacity and low volume expansion of silicon oxide. The non-aqueous electrolyte secondary battery has a high initial efficiency and maintains improved performance and efficiency over repeated charge/discharge cycles by virtue of mitigated volumetric changes during charge/discharge cycles.09-24-2009
20090311606NEGATIVE ELECTRODE MATERIAL, MAKING METHOD, LITHIUM ION SECONDARY BATTERY, AND ELECTROCHEMICAL CAPACITOR - A conductive powder is provided in which particles having silicon crystallites dispersed in a silicon compound are coated on their surface with carbon. The conductive powder develops a diffraction peak assigned to Si(111) around 2θ=28.4° on x-ray diffractometry (Cu—Kα) using copper as the counter cathode, the peak having a half width of at least 1.0°, and has a specific resistance of up to 50 mΩ. The powder is used as a negative electrode material to construct a non-aqueous electrolyte secondary battery, which has a high charge/discharge capacity and improved cycle performance.12-17-2009
20100112231GRAPHITE-SILICON CARBIDE COMPOSITE AND MAKING METHOD - A graphite-silicon carbide composite comprises a graphite substrate and a silicon carbide layer formed thereon and comprising silicon carbide particles in fused and contact bonded state. The composite has excellent oxidation resistance and finds a wide range of application as heat resistant material. The method of forming a silicon carbide layer on graphite surface is simple and consistent.05-06-2010
20100179049SILICON CARBIDE-SILICON CARBIDE FIBER COMPOSITE AND MAKING METHOD - A silicon carbide-silicon carbide fiber composite consists of silicon carbide particles and silicon carbide fibers. The composite has excellent oxidation resistance and finds a wide range of application as heat resistant material. The silicon carbide conversion method is simple and consistent enough to ensure production of silicon carbide-silicon carbide fiber composites with minimized variation in quality.07-15-2010
20100243951NEGATIVE ELECTRODE MATERIAL FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, MAKING METHOD AND LITHIUM ION SECONDARY BATTERY - A negative electrode material comprising composite particles having silicon nano-particles dispersed in silicon oxide is suited for use in nonaqueous electrolyte secondary batteries. The silicon nano-particles have a size of 1-100 nm. The composite particles contain oxygen and silicon in a molar ratio: 009-30-2010
20100288970NEGATIVE ELECTRODE MATERIAL FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, MAKING METHOD AND LITHIUM ION SECONDARY BATTERY - A negative electrode material for nonaqueous electrolyte secondary batteries comprises composite particles which are prepared by coating surfaces of particles having silicon nano-particles dispersed in silicon oxide with a carbon coating, and etching the coated particles in an acidic atmosphere. The silicon nano-particles have a size of 1-100 nm. The composite particles contain oxygen and silicon in a molar ratio: O11-18-2010
20110159303SINTERED SILICON OXIDE FOR FILM VAPOR DEPOSITION, ITS PRODUCTION METHOD, AND METHOD FOR PRODUCING SILICON OXIDE VAPOR DEPOSITION FILM - A sintered silicon oxide for film vapor deposition having a density of 1.0 to 2.0 g/cm06-30-2011

Patent applications by Hirofumi Fukuoka, Annaka-Shi JP