Patents by Inventor Makoto Takafuji
Makoto Takafuji has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20220266222Abstract: The present invention provides a column filler for liquid chromatography that has a great adsorption capacity, adjustable adsorption selectivity, and high shape retainability and therefore is usable for measurement of various substances and capable of achieving excellent separation performance and a high filling rate in a column when used as a column filler for liquid chromatography. Provided is a column filler for liquid chromatography including carbon-coated porous particles, the carbon-coated porous particles including porous particles each having a coating layer containing an amorphous carbon on a surface.Type: ApplicationFiled: May 13, 2022Publication date: August 25, 2022Applicants: SEKISUI CHEMICAL CO., LTD., NATIONAL UNIVERSITY CORPORATION KUMAMOTO UNIVERSITYInventors: Ren-de SUN, Shoji NOZATO, Akira NAKASUGA, Hirotaka IHARA, Makoto TAKAFUJI, Yutaka KUWAHARA, Hiroki NOGUCHI, Tianhang LIU
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Publication number: 20210283576Abstract: The present invention provides a column filler for liquid chromatography that has a great adsorption capacity, adjustable adsorption selectivity, and high shape retainability and therefore is usable for measurement of various substances and capable of achieving excellent separation performance and a high filling rate in a column when used as a column filler for liquid chromatography. Provided is a column filler for liquid chromatography including carbon-coated porous particles, the carbon-coated porous particles including porous particles each having a coating layer containing an amorphous carbon on a surface.Type: ApplicationFiled: November 11, 2017Publication date: September 16, 2021Applicants: SEKISUI CHEMICAL CO., LTD., NATIONAL UNIVERSITY CORPORATION KUMAMOTO UNIVERSITYInventors: Ren-de SUN, Shoji NOZATO, Akira NAKASUGA, Hirotaka IHARA, Makoto TAKAFUJI, Yutaka KUWAHARA, Hiroki NOGUCHI, Tianhang LIU
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Publication number: 20210168972Abstract: A heat conductive sheet having excellent heat conductivity in the thickness direction is provided. A heat conductive sheet (1) comprises a first carbon material having a graphene laminated structure (2), orientation-controlling particles (3), and a first resin (4), wherein at least a part of the first carbon material (2) is oriented in a direction different from the surface direction of the heat conductive sheet (1) due to the presence of the orientation-controlling particles (3), and the ratio of the average particle diameter of the first carbon material (2) to the average particle diameter of the orientation-controlling particles (3) (the first carbon material (2)/the orientation-controlling particles (3)) is 0.09 or more and less than 4.0.Type: ApplicationFiled: December 10, 2018Publication date: June 3, 2021Inventors: Kouji Ashiba, Keigo Oowashi, Shoji Nozato, Makoto Takafuji, Hirotaka Ihara
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Publication number: 20180354798Abstract: The present invention provides black particles having high electrical insulation properties, high blackness in a visible light region, and excellent dispersibility, and a method for producing the black particles. The present invention relates to black particles containing amorphous carbon, the amorphous carbon being derived from carbon contained in an oxazine resin, the black particles having a specific gravity of 1.8 g/cm3 or less, a zeta potential of ?70 to +80 mV, an average total light reflectance measured at a wavelength of 400 to 800 nm of 5% or less, and a peak intensity ratio between G band and D band as determined from a Raman spectrum of 1.2 or more.Type: ApplicationFiled: February 17, 2017Publication date: December 13, 2018Applicants: SEKISUI CHEMICAL CO., LTD., NATIONAL UNIVERSITY CORPORATION KUMAMOTO UNIVERSITYInventors: Ren-de SUN, Shoji NOZATO, Akira NAKASUGA, Hirotaka IHARA, Makoto TAKAFUJI, Yutaka KUWAHARA, Akiko MURAKAMI
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Publication number: 20170298261Abstract: There is provided a thermally conductive sheet having excellent thermal conductivity in the thickness direction of the sheet. A thermally conductive sheet comprising expanded graphite; and orientation-controlling particles, wherein at least part of the expanded graphite is oriented in a direction different from a plane direction of the sheet by the orientation-controlling particles.Type: ApplicationFiled: November 27, 2015Publication date: October 19, 2017Inventors: Shoji Nozato, Akira Nakasuga, Akihiko Fujiwara, Hirotaka Ihara, Makoto Takafuji, Eisaku Sato
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Patent number: 9604884Abstract: There is provided a composite material having excellent adhesion between a resin and a graphene-like carbon material and a method for producing the same. A composite material comprising a substrate comprising a resin, and a graphene-like carbon material layer provided so as to cover at least part of a surface of the substrate, wherein the graphene-like carbon material layer is composed of a graphene-like carbon material obtained by pyrolyzing a polymer in a composition in which the polymer is fixed to graphite or primary exfoliated graphite.Type: GrantFiled: August 30, 2013Date of Patent: March 28, 2017Assignees: SEKISUI CHEMICAL CO., LTD., NATIONAL UNIVERSITY CORPORATION KUMAMOTO UNIVERSITYInventors: Shoji Nozato, Akira Nakasuga, Hirotaka Ihara, Makoto Takafuji, Hullathy Subban Ganapathy, Rika Fukuda
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Patent number: 9528053Abstract: A gasification furnace (110) of a circulation fluidized bed-type gasification furnace (100) forms a fluid medium into a fluid bed, and produces gasified gas by gasifying an input gasification raw material using heat from the fluid medium. A combustion furnace (102) heats the fluid medium output from the gasification furnace. A flow rate adjuster (106) distributes the fluid medium heated in the combustion furnace to the gasification furnace and a buffer section (112). In this manner, irrespective of the flow rate of the fluid medium in the entire circulation fluidized bed-type gasification furnace (100), the buffer section (112) enables the fluid medium to bypass to the combustion furnace. As a result, the flow rate of the fluid medium in the gasification furnace (110) can be maintained at a desired flow rate.Type: GrantFiled: June 18, 2012Date of Patent: December 27, 2016Assignee: IHI CORPORATIONInventors: Masahiro Narukawa, Makoto Takafuji, Toshiyuki Suda
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Patent number: 9458295Abstract: A composite material in which a graphene-like carbon material has excellent adhesion to a substrate composed of resin, and a method for producing the same are provided. The composite material comprises a substrate composed of resin and a graphene-like carbon material layer provided so as to cover at least part of the surface of the substrate, wherein graphene-like carbon is closely attached to the surface of the substrate. The method for producing a composite material comprises bringing a graphene-like carbon material into contact with at least part of the surface of a substrate composed of resin and heating under the action of a supercritical or subcritical fluid.Type: GrantFiled: October 7, 2015Date of Patent: October 4, 2016Assignees: SEKISUI CHEMICAL CO., LTD., NATIONAL UNIVERSITY CORPORATION KUMAMOTO UNIVERSITYInventors: Shoji Nozato, Akira Nakasuga, Hirotaka Ihara, Hullathy Subban Ganapathy, Makoto Takafuji
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Patent number: 9399738Abstract: A circulation type gasification furnace is provided with: a gasification furnace that turns a fluidized medium into a fluidized bed or moving bed, and produces gasification gas by gasifying a gasification raw material injected into the fluidized medium; a combustion furnace that heats the fluidized medium discharged from the gasification furnace and combusts residue of the gasification raw material; a medium separator that, in order to return the fluidized medium to the gasification furnace, separates the fluidized medium from a combustion exhaust gas discharged from the combustion furnace; a gasification gas separator that separates the gasification gas produced in the gasification furnace from the residue of the gasification raw material; and a residue discharge section that creates a seal between the gasification gas separator and the combustion furnace, and discharges the residue separated by the gasification gas separator into the combustion furnace.Type: GrantFiled: July 18, 2014Date of Patent: July 26, 2016Assignee: IHI CORPORATIONInventor: Makoto Takafuji
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Patent number: 9284417Abstract: A composite material in which a graphene-like carbon material has excellent adhesion to a substrate composed of resin, and a method for producing the same are provided. The composite material comprises a substrate composed of resin and a graphene-like carbon material layer provided so as to cover at least part of the surface of the substrate, wherein graphene-like carbon is closely attached to the surface of the substrate. The method for producing a composite material comprises bringing a graphene-like carbon material into contact with at least part of the surface of a substrate composed of resin and heating under the action of a supercritical or subcritical fluid.Type: GrantFiled: May 28, 2012Date of Patent: March 15, 2016Assignees: SEKISUI CHEMICAL CO., LTD., NATIONAL UNIVERSITY CORPORATION KUMAMOTO UNIVERSITYInventors: Shoji Nozato, Akira Nakasuga, Hirotaka Ihara, Hullathy Subban Ganapathy, Makoto Takafuji
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Patent number: 9267679Abstract: A lateral duct 15 for interconnecting a riser 1 and a cyclone separator 2 has an introduction portion 16 at the connection with the riser 1 which has a cross-sectional area equal to that of the riser 1, and a throttled portion 17 between the introduction portion 16 and the cyclone separator 2 which has cross-sectional areas gradually reduced from the introduction portion 16 to the cyclone separator 2 so as to increase a flow velocity of combustion gas.Type: GrantFiled: June 16, 2009Date of Patent: February 23, 2016Assignee: IHI CorporationInventors: Makoto Takafuji, Toshiyuki Suda
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Publication number: 20160024259Abstract: A composite material in which a graphene-like carbon material has excellent adhesion to a substrate composed of resin, and a method for producing the same are provided. The composite material comprises a substrate composed of resin and a graphene-like carbon material layer provided so as to cover at least part of the surface of the substrate, wherein graphene-like carbon is closely attached to the surface of the substrate. The method for producing a composite material comprises bringing a graphene-like carbon material into contact with at least part of the surface of a substrate composed of resin and heating under the action of a supercritical or subcritical fluid.Type: ApplicationFiled: October 7, 2015Publication date: January 28, 2016Inventors: Shoji Nozato, Akira Nakasuga, Hirotaka Ihara, Hullathy Subban Ganapathy, Makoto Takafuji
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Patent number: 9192900Abstract: In the gasification furnace raw material supplying apparatus, the protective gas (36) is jetted toward the fluidized bed (4) formed in the fluidized bed gasification furnace (1) from an end portion on the downstream side (B) of the screw feeder (28) in the raw material supplying direction using the nozzle (42) in the screw shaft (27). In addition, the protective gas (36) is jetted toward the fluidized bed (4) from the periphery of the end portion on the downstream side (B) of the screw feeder (28) in the raw material supplying direction using the nozzles (37) provided at the furnace wall (23) of the fluidized bed gasification furnace (1). As a result, the end portion of the screw shaft (27) on the downstream side (B) in the raw material supplying direction is prevented from being exposed to the bed material which is a component of the fluidized bed (4), and abrasion of the front end portion of the screw can be suppressed.Type: GrantFiled: June 13, 2011Date of Patent: November 24, 2015Assignee: IHI CORPORATIONInventor: Makoto Takafuji
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Publication number: 20150210599Abstract: There is provided a composite material having excellent adhesion between a resin and a graphene-like carbon material and a method for producing the same. A composite material comprising a substrate comprising a resin, and a graphene-like carbon material layer provided so as to cover at least part of a surface of the substrate, wherein the graphene-like carbon material layer is composed of a graphene-like carbon material obtained by pyrolyzing a polymer in a composition in which the polymer is fixed to graphite or primary exfoliated graphite.Type: ApplicationFiled: August 30, 2013Publication date: July 30, 2015Inventors: Shoji Nozato, Akira Nakasuga, Hirotaka Ihara, Makoto Takafuji, Hullathy Subban Ganapathy, Rika Fukuda
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Publication number: 20140328730Abstract: A circulation type gasification furnace is provided with: a gasification furnace that turns a fluidized medium into a fluidized bed or moving bed, and produces gasification gas by gasifying a gasification raw material injected into the fluidized medium; a combustion furnace that heats the fluidized medium discharged from the gasification furnace and combusts residue of the gasification raw material; a medium separator that, in order to return the fluidized medium to the gasification furnace, separates the fluidized medium from a combustion exhaust gas discharged from the combustion furnace; a gasification gas separator that separates the gasification gas produced in the gasification furnace from the residue of the gasification raw material; and a residue discharge section that creates a seal between the gasification gas separator and the combustion furnace, and discharges the residue separated by the gasification gas separator into the combustion furnace.Type: ApplicationFiled: July 18, 2014Publication date: November 6, 2014Inventor: Makoto TAKAFUJI
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Patent number: 8864856Abstract: A circulating fluidized bed gasification furnace has a combustion furnace 1, a cyclone collector 4 to which a combustion exhaust gas 3 from the combustion furnace 1 is introduced to collect a circulating medium 5, a fluidized bed gasification furnace 8 for formation of a fluidized bed 10 by introducing the circulating medium 5 collected in the cyclone collector 4 through a downcomer 7 and by supplying a gasification agent 9 from below and for gasification of a raw material 12 by supplying the same to a freeboard 11, and a circulation flow passage 14 for return of the circulating medium and unreacted char not gasified in the gasification furnace 8 to the combustion furnace 1. The downcomer 7 connected to the collector 4 has a lower end connected through a sealer 18 to the freeboard 11 in the gasification furnace 8. A raw material supply unit 20 is arranged to supply the raw material 12 to the circulating medium 5 between the sealer 18 and the freeboard 11.Type: GrantFiled: July 10, 2009Date of Patent: October 21, 2014Assignee: IHI CorporationInventors: Makoto Takafuji, Toshiyuki Suda
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Publication number: 20140091260Abstract: A gasification furnace (110) of a circulation fluidized bed-type gasification furnace (100) forms a fluid medium into a fluid bed, and produces gasified gas by gasifying an input gasification raw material using heat from the fluid medium. A combustion furnace (102) heats the fluid medium output from the gasification furnace. A flow rate adjuster (106) distributes the fluid medium heated in the combustion furnace to the gasification furnace and a buffer section (112). In this manner, irrespective of the flow rate of the fluid medium in the entire circulation fluidized bed-type gasification furnace (100), the buffer section (112) enables the fluid medium to bypass to the combustion furnace. As a result, the flow rate of the fluid medium in the gasification furnace (110) can be maintained at a desired flow rate.Type: ApplicationFiled: June 18, 2012Publication date: April 3, 2014Inventors: Masahiro Narukawa, Makoto Takafuji, Toshiyuki Suda
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Publication number: 20130244038Abstract: A composite material in which a graphene-like carbon material has excellent adhesion to a substrate composed of resin, and a method for producing the same are provided. The composite material comprises a substrate composed of resin and a graphene-like carbon material layer provided so as to cover at least part of the surface of the substrate, wherein graphene-like carbon is closely attached to the surface of the substrate. The method for producing a composite material comprises bringing a graphene-like carbon material into contact with at least part of the surface of a substrate composed of resin and heating under the action of a supercritical or subcritical fluid.Type: ApplicationFiled: May 28, 2012Publication date: September 19, 2013Inventors: Shoji Nozato, Akira Nakasuga, Hirotaka Ihara, Hullathy Subban Ganapathy, Makoto Takafuji
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Patent number: 8480767Abstract: A fluidized bed gasification system is provided in which bed material and raw material are passed throughout a fluidized bed gasification furnace so that raw material is gasified with higher gasification efficiency to improve gasification productivity. A heat-resistant partition 32 for regulation of bed material flow is arranged between positions I and II of a downcomer 12 of a separator 8 and of a supply flow passage 25 in plane of a fluidized bed gasification furnace 2. As a result, the bed material introduced via the downcomer 12 is directed to a supply flow passage 25 through a circuitous flow passage 33 throughout the fluidized bed gasification furnace 2 defined by the heat-resistant partition 32.Type: GrantFiled: March 14, 2007Date of Patent: July 9, 2013Assignee: IHI CorporationInventors: Yoshiaki Matsuzawa, Toshiyuki Suda, Hironobu Fujiyoshi, Makoto Takafuji, Kenichiro Kondo
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Publication number: 20130089470Abstract: In the gasification furnace raw material supplying apparatus, the protective gas (36) is jetted toward the fluidized bed (4) formed in the fluidized bed gasification furnace (1) from an end portion on the downstream side (B) of the screw feeder (28) in the raw material supplying direction using the nozzle (42) in the screw shaft (27). In addition, the protective gas (36) is jetted toward the fluidized bed (4) from the periphery of the end portion on the downstream side (B) of the screw feeder (28) in the raw material supplying direction using the nozzles (37) provided at the furnace wall (23) of the fluidized bed gasification furnace (1). As a result, the end portion of the screw shaft (27) on the downstream side (B) in the raw material supplying direction is prevented from being exposed to the bed material which is a component of the fluidized bed (4), and abrasion of the front end portion of the screw can be suppressed.Type: ApplicationFiled: June 13, 2011Publication date: April 11, 2013Inventor: Makoto Takafuji