Patents by Inventor Hidekazu Nishino
Hidekazu Nishino 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: 20230303390Abstract: A hydrogen production system includes: a hydrogen compound slurry in which a hydrogen compound member is suspended in a solvent containing water; a first vessel; a second vessel having an internal temperature higher than that of the first vessel; a first passage connecting the first vessel and the second vessel; and a second passage connecting the first vessel and the second vessel and different from the first passage. The hydrogen production system is configured to allow the hydrogen compound slurry contained in the first vessel to move into the second vessel through the first passage, and the hydrogen compound slurry contained in the second vessel to move into the first vessel through the second passage.Type: ApplicationFiled: February 6, 2023Publication date: September 28, 2023Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Atsushi Tanaka, Yoshio Seiki, Shuntaro Seto, Hideki Ito, Hidekazu Nishino, Ichirou Toyoda
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Publication number: 20220149286Abstract: A carbon nanotube composition capable of producing an FET having improved mobility is provided. The carbon nanotube composition of the present invention is a halogen-free carbon nanotube composition comprising a carbon nanotube having the following features (1) and (2). (1) A dispersion liquid obtained by dispersing the carbon nanotube in a solution containing a cholic acid derivative and water has, in the absorption spectrum in the wavelength range of 300 nm to 1100 nm measured by an ultraviolet/visible/near-infrared spectroscopy, the minimum absorbance in the range of 600 nm to 700 nm and the maximum absorbance in the range of 900 nm to 1050 nm; wherein the ratio of the minimum absorbance and the maximum absorbance is 2.5 or more and 4.5 or less; and (2) the dispersion liquid has the height ratio of the G-band and the D-band (value of (D/G)×100) of 3.33 or less, as measured by a Raman spectrophotometer, using light having a wavelength of 532 nm as excitation light.Type: ApplicationFiled: February 6, 2020Publication date: May 12, 2022Applicant: TORAY INDUSTRIES, INC.Inventors: Takayoshi HIRAI, Hidekazu NISHINO, Seiichiro MURASE
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Publication number: 20210328011Abstract: A carbon nanotube composite is described that can be accurately applied to a desired position by inkjet and a dispersion liquid using the same, where a main object is a carbon nanotube composite in which a conjugated polymer is attached to at least a part of the surface of a carbon nanotube, the conjugated polymer having a side chain represented by general formula (1): wherein R, X and A are defined as described.Type: ApplicationFiled: September 17, 2019Publication date: October 21, 2021Applicant: Toray Industries, Inc.Inventors: Kazuki Isogai, Seiichiro Murase, Ryuichi Tanaka, Hidekazu Nishino
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Publication number: 20190119508Abstract: A carbon nanotube dispersion liquid includes a carbon nanotube-containing composition, a cellulose derivative including a constitutional unit represented by formula (1), and an organic solvent, wherein the organic solvent contains one or more solvents selected from aprotic polar solvents or terpenes, the concentration of the carbon nanotube-containing composition contained in the carbon nanotube dispersion is 1% by mass or less, and when the dispersion liquid is subjected to a centrifugal treatment at 10,000 G for 10 minutes to recover 90% by volume of the supernatant, the concentration of the carbon nanotube dispersion liquid of the supernatant portion accounts for 80% or more of the concentration of the carbon nanotube dispersion liquid before the centrifugal treatment: wherein R may be the same or different and each independently represent H, or a linear or branched alkyl group having 1 to 40 carbon atoms or an acyl group.Type: ApplicationFiled: April 24, 2017Publication date: April 25, 2019Inventors: Naoyo Okamoto, Naoki Imazu, Takayoshi Hirai, Hidekazu Nishino
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Patent number: 10266411Abstract: A method of producing a carbon nanotube-containing composition is a method of producing a carbon nanotube-containing composition for synthesizing carbon nanotube aggregates by introducing a ferrocene derivative, a sulfur compound, a carbon source, and a carrier gas into a gas phase flowing in a heating furnace within a temperature range of higher than 1,200° C. to 1,800° C. The carbon source substantially consists of benzene or toluene. The carrier gas includes hydrogen at 10% by volume to 85% by volume. The carrier gas has a linear velocity of 500 cm/min to 2,200 cm/min.Type: GrantFiled: July 13, 2016Date of Patent: April 23, 2019Assignee: Toray Industries, Inc.Inventors: Takayoshi Hirai, Kenshi Miyaura, Hidekazu Nishino, Shiro Honda
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Publication number: 20180170758Abstract: A method of producing a carbon nanotube-containing composition is a method of producing a carbon nanotube-containing composition for synthesizing carbon nanotube aggregates by introducing a ferrocene derivative, a sulfur compound, a carbon source, and a carrier gas into a gas phase flowing in a heating furnace within a temperature range of higher than 1,200° C. to 1,800° C. The carbon source substantially consists of benzene or toluene. The carrier gas includes hydrogen at 10% by volume to 85% by volume. The carrier gas has a linear velocity of 500 cm/min to 2,200 cm/min.Type: ApplicationFiled: July 13, 2016Publication date: June 21, 2018Inventors: Takayoshi Hirai, Kenshi Miyaura, Hidekazu Nishino, Shiro Honda
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Patent number: 9922745Abstract: An aggregate of carbon nanotubes has an acid adsorption amount equal to or greater than 0.6 mass % and equal to or less than 12 mass %, which is obtained by subjecting a starting material composition containing carbon nanotubes to a two-stage wet oxidation treatment. A method of producing an aggregate of carbon nanotubes includes a primary oxidation treatment step, wherein a starting material composition containing carbon nanotubes is subjected to a wet oxidation treatment to give a primary treated aggregate of carbon nanotubes having a ratio (G/D ratio) of the height of G band to that of D band in Raman spectroscopic analysis at 532 nm wavelength equal to or greater than 30; and a secondary oxidation treatment step of performing a wet oxidation treatment under an oxidizing condition stronger than that of the primary oxidation treatment step.Type: GrantFiled: February 25, 2014Date of Patent: March 20, 2018Assignee: Toray Industries, Inc.Inventors: Naoyo Okamoto, Kazunori Hondo, Hidekazu Nishino, Kenichi Sato
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Patent number: 9443640Abstract: Provided is a process for producing a dispersion liquid of carbon nanotube aggregates in which the carbon nanotube aggregates are dispersed in a dispersion medium, comprising the two steps: (A) a step of adsorbing a dispersant to carbon nanotube aggregates by physical dispersion treatment in a dispersion medium to prepare a carbon nanotube paste with a particle size of 100 nm to 20 ?m resulting from partial dissociation of a mass of the carbon nanotube aggregates; and (B) a step of dispersing the carbon nanotube paste by ultrasonic dispersion treatment. A process for producing a dispersion liquid of carbon nanotube aggregates with reduced destruction and breakage of graphite structure of a carbon nanotube aggregate can be provided.Type: GrantFiled: October 28, 2011Date of Patent: September 13, 2016Assignee: TORAY INDUSTRIES, INC.Inventors: Kazunori Hondo, Hidekazu Nishino, Kenichi Sato
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Publication number: 20150318069Abstract: An aggregate of carbon nanotubes has an acid adsorption amount equal to or greater than 0.6 mass % and equal to or less than 12 mass %, which is obtained by subjecting a starting material composition containing carbon nanotubes to a two-stage wet oxidation treatment. A method of producing an aggregate of carbon nanotubes includes a primary oxidation treatment step, wherein a starting material composition containing carbon nanotubes is subjected to a wet oxidation treatment to give a primary treated aggregate of carbon nanotubes having a ratio (G/D ratio) of the height of G band to that of D band in Raman spectroscopic analysis at 532 nm wavelength equal to or greater than 30; and a secondary oxidation treatment step of performing a wet oxidation treatment under an oxidizing condition stronger than that of the primary oxidation treatment step.Type: ApplicationFiled: February 25, 2014Publication date: November 5, 2015Applicant: Toray Industries, Inc.Inventors: Naoyo Okamoto, Kazunori Hondo, Hidekazu Nishino, Kenichi Sato
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Publication number: 20150111025Abstract: The present invention relates to a dispersion liquid of a carbon nanotube-containing composition which contains a carbon nanotube-containing composition, a dispersant with a weight-average molecular weight of 5,000 to 60,000 as determined by gel permeation chromatography, and an aqueous solvent. The present invention provides a dispersion liquid of a carbon nanotube-containing composition which shows high dispersibility on a base while maintaining high dispersibility for the carbon nanotube-containing composition.Type: ApplicationFiled: June 21, 2013Publication date: April 23, 2015Inventors: Hidekazu Nishino, Kazunori Hondo, Naoki Imazu
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Patent number: 8992878Abstract: Disclosed is a composition containing carbon nanotubes which meets all of the following conditions (1) to (4). (1) When observed via transmission electron microscopy, at least 50 out of every 100 carbon nanotubes are double-walled carbon nanotubes. (2) The carbon nanotubes have an average outer diameter in the range of 1.0 to 3.0 nm. (3) During thermogravimetric analysis under atmosphere at a temperature increase rate of 10° C./minute, a high temperature combustion peak is at 700 to 850° C., and the relationship between low temperature weight loss (TG(L)) and high temperature weight loss (TG(H)) is TG(H)/(TG(L)+TG(H))?0.75. (4) The composition containing carbon nanotubes has a volume resistance value between 1.0×10?2 ?·cm and 1.0×10?4 ?·cm, inclusive. The disclosed composition containing carbon nanotubes primarily has double-walled carbon nanotubes with high electrical conductivity and high heat resistance.Type: GrantFiled: March 4, 2010Date of Patent: March 31, 2015Assignee: Toray Industries, Inc.Inventors: Hidekazu Nishino, Hajime Kato, Naoyo Okamoto, Shuko Ikeuchi, Kenichi Sato, Shiho Tanaka, Kazuyoshi Higuchi
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Publication number: 20130214210Abstract: Provided is a process for producing a dispersion liquid of carbon nanotube aggregates in which the carbon nanotube aggregates are dispersed in a dispersion medium, comprising the two steps: (A) a step of adsorbing a dispersant to carbon nanotube aggregates by physical dispersion treatment in a dispersion medium to prepare a carbon nanotube paste with a particle size of 100 nm to 20 ?m resulting from partial dissociation of a mass of the carbon nanotube aggregates; and (B) a step of dispersing the carbon nanotube paste by ultrasonic dispersion treatment. A process for producing a dispersion liquid of carbon nanotube aggregates with reduced destruction and breakage of graphite structure of a carbon nanotube aggregate can be provided.Type: ApplicationFiled: October 28, 2011Publication date: August 22, 2013Applicant: Toray Industries, Inc.Inventors: Kazunori Hondo, Hidekazu Nishino, Kenichi Sato
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Publication number: 20130209791Abstract: A transparent conductive laminate comprises a conductive layer. At least one of the following conditions [A] to [C] is satisfied and the ratio of the surface resistance after subjecting the transparent conductive laminate to a 1-hour moist-heat treatment at a temperature of 60° C. and a relative humidity of 90% and then leaving the resultant to stand for 3 minutes at a temperature of 25° C. and a relative humidity of 50% is 0.7 to 1.3 with respect to the surface resistance prior to the treatment: [A] the surface resistance at a white reflectance of 75% is not higher than 1.1×103 ?/?; [B] the surface resistance at a light absorptivity of a carbon nanotube layer of 5% is not higher than 1.1×103 ?/?; and [C] the surface resistance at a total light transmittance of 90% is not higher than 1.1×103 ?/?.Type: ApplicationFiled: October 28, 2011Publication date: August 15, 2013Applicant: Toray Industries, Inc.Inventors: Takashi Oi, Osamu Watanabe, Kazunori Hondo, Hidekazu Nishino, Kenichi Sato
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Patent number: 8231965Abstract: A carbon nanotubes (CNTs)-containing resin composite comprised of a synthetic resin-impregnated aligned CNTs aggregate to have a specific surface area of at least 600 m2/g. Its production method comprises a step of laying down an aligned CNTs aggregate having grown perpendicularly from a substrate, a step of impregnating the laid-down aligned CNTs aggregate with a resin, and a step of shaping the resin-impregnated aligned CNTs aggregate into a sheet. Accordingly, there are provided a CNTs-containing resin composite having a high CNT content and a high degree of alignment and having a desired shape capable of fully taking the advantages of anisotropy intrinsic to CNTs, and a production method capable of producing it with ease.Type: GrantFiled: April 24, 2008Date of Patent: July 31, 2012Assignee: National Institute of Advanced Industrial Science and TechnologyInventors: Kenji Hata, Hidekazu Nishino
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Publication number: 20120058889Abstract: Disclosed is a composition containing carbon nanotubes which meets all of the following conditions (1) to (4). (1) When observed via transmission electron microscopy, at least 50 out of every 100 carbon nanotubes are double-walled carbon nanotubes. (2) The carbon nanotubes have an average outer diameter in the range of 1.0 to 3.0 nm. (3) During thermogravimetric analysis under atmosphere at a temperature increase rate of 10° C./minute, a high temperature combustion peak is at 700 to 850° C., and the relationship between low temperature weight loss (TG(L)) and high temperature weight loss (TG(H)) is TG(H)/(TG(L)+TG(H))?0.75. (4) The composition containing carbon nanotubes has a volume resistance value between 1.0×10?2 ?·cm and 1.0×10?4 ?·cm, inclusive. The disclosed composition containing carbon nanotubes primarily has double-walled carbon nanotubes with high electrical conductivity and high heat resistance.Type: ApplicationFiled: March 4, 2010Publication date: March 8, 2012Inventors: Hidekazu Nishino, Hajime Kato, Naoyo Okamoto, Shuko Ikeuchi, Kenichi Sato, Shiho Tanaka, Kazuyoshi Higuchi
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Patent number: 8038908Abstract: An aggregate of carbon nanotubes satisfying all of the following requirements (1) to (3): (1) the volume resistivity is from 1×10?5 ?·cm to 5×10?3 ?·cm; (2) at least 50 out of 100 carbon nanotubes are double-walled carbon nanotubes in observation by a transmission electron microscope; and (3) the weight loss from 200° C. to 400° C. in thermogravimetry at a temperature rise of 10° C/min is from 5% to 20%.Type: GrantFiled: August 19, 2008Date of Patent: October 18, 2011Assignee: TORAY Industries, Inc.Inventors: Takayoshi Hirai, Hidekazu Nishino, Kenichi Sato, Naoyo Okamoto
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Publication number: 20110039124Abstract: A method for producing a conductive composite includes coating a composition (B) containing a dispersing agent (A) having a hydroxyl group in the molecule and a conductive material on a substrate, and coating a liquid containing a compound (C) represented by the formula (I) below and/or a hydrolysate of the compound (C) on a surface coated with the composition (B): (R1)mMXn-m ??(1).Type: ApplicationFiled: March 24, 2009Publication date: February 17, 2011Applicant: TORAY INDUSTRIES, INC.Inventors: Shuko Ikeuchi, Hidekazu Nishino, Masahito Yoshikawa, Kenichi Sato, Osamu Watanabe
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Publication number: 20100301278Abstract: An aggregate of carbon nanotubes satisfying all of the following requirements (1) to (3): (1) the volume resistivity is from 1×10?5 ?·cm to 5×10?3 ?·cm; (2) at least 50 out of 100 carbon nanotubes are double-walled carbon nanotubes in observation by a transmission electron microscope; and (3) the weight loss from 200° C. to 400° C. in thermogravimetry at a temperature rise of 10° C./min is from 5% to 20%.Type: ApplicationFiled: August 19, 2008Publication date: December 2, 2010Applicant: TORAY INDUSTRIES, INC.Inventors: Takayoshi Hirai, Hidekazu Nishino, Kenichi Sato, Naoyo Okamoto
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Publication number: 20100203316Abstract: A carbon nanotubes (CNTs)-containing resin composite comprised of a synthetic resin-impregnated aligned CNTs aggregate to have a specific surface area of at least 600 m2/g. Its production method comprises a step of laying down an aligned CNTs aggregate having grown perpendicularly from a substrate, a step of impregnating the laid-down aligned CNTs aggregate with a resin, and a step of shaping the resin-impregnated aligned CNTs aggregate into a sheet. Accordingly, there are provided a CNTs-containing resin composite having a high CNT content and a high degree of alignment and having a desired shape capable of fully taking the advantages of anisotropy intrinsic to CNTs, and a production method capable of producing it with ease.Type: ApplicationFiled: April 24, 2008Publication date: August 12, 2010Inventors: Kenji Hata, Hidekazu Nishino