Patents by Inventor Akio Ohtani
Akio Ohtani 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: 20230386495Abstract: A sound processing method obtains first audio data representing first sound, obtains second audio data representing second sound created in advance, analyzes the first audio data, compares the second audio data with an analysis result of the analyzing, reproduces third audio data from the second audio data by omitting a type of sound from the second sound that matches a type of sound in the first sound, based on a comparison result of the comparing, and outputs an audio signal representing the reproduced third audio data.Type: ApplicationFiled: August 8, 2023Publication date: November 30, 2023Inventors: Takuma TAKEMOTO, Katsumi ISHIKAWA, Akio OHTANI
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Patent number: 11235513Abstract: Provided is a method for manufacturing a three-dimensional structure, capable of yielding a three dimensional structure that excels in buildability. The method for manufacturing a three-dimensional structure, comprises melting a filament that contains a thermoplastic resin by using a 3D printer, and depositing it onto a base, and comprising bonding the filament at one end of the filament to a surface of the base so as to achieve a bond strength to the base of 15 N or larger, and discharging the filament through a nozzle of the 3D printer onto a surface of the base so as to deposit thereon, while moving at least one of the base or the nozzle.Type: GrantFiled: January 16, 2017Date of Patent: February 1, 2022Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Asami Nakai, Akio Ohtani, Hiroto Ito, Fumiya Hirano, Nobuki Hirooka, Nobuhiko Matsumoto
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Publication number: 20210347111Abstract: Provided is the method for manufacturing a three-dimensional structure with a less amount of internal voids or bubbles, and also to provide a 3D printer filament used for manufacturing such three-dimensional structure. The method for manufacturing a three-dimensional structure, the method comprises melting and depositing a filament using a 3D printer, the filament comprising a commingled yarn that contains a continuous reinforcing fiber (A) and a continuous thermoplastic resin fiber (B), with a dispersity of the continuous reinforcing fiber (A) in the commingled yarn of 60 to 100%.Type: ApplicationFiled: July 20, 2021Publication date: November 11, 2021Inventors: Asami NAKAI, Akio OHTANI, Hiroto ITO, Fumiya HIRANO, Nobuki HIROOKA, Nobuhiko MATSUMOTO
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Patent number: 11117312Abstract: Provided is the method for manufacturing a three-dimensional structure with a less amount of internal voids or bubbles, and also to provide a 3D printer filament used for manufacturing such three-dimensional structure. The method for manufacturing a three-dimensional structure, the method comprises melting and depositing a filament using a 3D printer, the filament comprising a commingled yarn that contains a continuous reinforcing fiber (A) and a continuous thermoplastic resin fiber (B), with a dispersity of the continuous reinforcing fiber (A) in the commingled yarn of 60 to 100%.Type: GrantFiled: January 16, 2017Date of Patent: September 14, 2021Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Asami Nakai, Akio Ohtani, Hiroto Ito, Fumiya Hirano, Nobuki Hirooka, Nobuhiko Matsumoto
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Publication number: 20210060851Abstract: Provided is the method for manufacturing a three-dimensional structure with a less amount of internal voids or bubbles, and also to provide a 3D printer filament used for manufacturing such three-dimensional structure. The method for manufacturing a three-dimensional structure, the method comprises melting and depositing a filament using a 3D printer, the filament comprising a commingled yarn that contains a continuous reinforcing fiber (A) and a continuous thermoplastic resin fiber (B), with a dispersity of the continuous reinforcing fiber (A) in the commingled yarn of 60 to 100%.Type: ApplicationFiled: January 16, 2017Publication date: March 4, 2021Inventors: Asami NAKAI, Akio OHTANI, Hiroto ITO, Fumiya HIRANO, Nobuki HIROOKA, Nobuhiko MATSUMOTO
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Patent number: 10926488Abstract: Provided is a composite material capable of keeping a good appearance even after heat processed, a method for manufacturing a composite material and a method for manufacturing a molded article. The composite material of the present invention contains a commingled yarn that contains a continuous reinforcing fiber (A) and a continuous thermoplastic resin fiber (B) as fiber components thereof; and a thermoplastic resin fiber (C) that keeps the commingled yarn in place, a thermoplastic resin that composes the thermoplastic resin fiber (C) having a melting point 15° C. or more higher than the melting point of a thermoplastic resin that composes the continuous thermoplastic resin fiber (B).Type: GrantFiled: April 1, 2016Date of Patent: February 23, 2021Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Akio Ohtani, Asami Nakai, Masataka Kaji, Mitsuro Takagi, Nobuhiko Matsumoto
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Patent number: 10828807Abstract: Provided is method for manufacturing a molded article that has a first portion, and a second portion that rises up from the first portion, the method comprising: placing a second material on a surface of a first material; the first material containing a reinforcing fiber (A) with a length exceeding 30 mm and a thermoplastic resin (B), the reinforcing fiber (A) being dispersed in the first material, and, the thermoplastic resin (B) being not substantially impregnated into the reinforcing fiber (A), and the second material containing a reinforcing fiber (a) with a length of 1 to 30 mm and a thermoplastic resin (b), the reinforcing fiber (a) being dispersed into the second material, and, the thermoplastic resin (b) being not substantially impregnated into the reinforcing fiber (a), and simultaneously forming the first portion and the second portion by one stroke of pressing, with a cohesive strength of the thermoplastic resin (B) and the thermoplastic resin (b) of 2 N/15 mm or larger, where the cohesive strengthType: GrantFiled: April 1, 2016Date of Patent: November 10, 2020Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Akio Ohtani, Asami Nakai, Masataka Kaji, Mitsuro Takagi, Nobuhiko Matsumoto
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Patent number: 10654227Abstract: A method of manufacturing an elongated resin molded article having a hollow structure including: using an elongated elastic core including a composite of an elastic body and a continuous yarn; molding a resin material on an outer peripheral surface of the elastic core; and then exerting tensile force on the elastic core and extracting the elastic core in a lengthwise direction so as to obtain the elongated resin molded article having the hollow structure. An elongated resin molded article having a hollow structure, including a curved portion and a branched portion in combination, wherein the resin molded article has a composite structure in which a resin material is reinforced with a braided continuous fiber across an entire length thereof including the curved portion and the branched portion.Type: GrantFiled: February 23, 2016Date of Patent: May 19, 2020Assignee: SUMITOMO RIKO COMPANY LIMITEDInventors: Yasuhiko Mihara, Shigemitsu Hattori, Asami Nakai, Tadashi Uozumi, Akio Ohtani
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Publication number: 20200061906Abstract: Provided is a method for manufacturing a three-dimensional structure, capable of yielding a three dimensional structure that excels in buildability. The method for manufacturing a three-dimensional structure, comprises melting a filament that contains a thermoplastic resin by using a 3D printer, and depositing it onto a base, and comprising bonding the filament at one end of the filament to a surface of the base so as to achieve a bond strength to the base of 15 N or larger, and discharging the filament through a nozzle of the 3D printer onto a surface of the base so as to deposit thereon, while moving at least one of the base or the nozzle.Type: ApplicationFiled: January 16, 2017Publication date: February 27, 2020Inventors: Asami NAKAI, Akio OHTANI, Hiroto ITO, Fumiya HIRANO, Nobuki HIROOKA, Nobuhiko MATSUMOTO
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Patent number: 10252125Abstract: To provide a lightweight shaft having excellent strength, a shaft has one or a plurality of fiber reinforced resin layers. At least one of the fiber reinforced resin layers is produced by a filament winding method in which one or a plurality of fiber bundles are wound while tension is applied thereto. The fiber bundles each include a plurality of filaments. The tension applied to the fiber bundles is not less than 0.04 (gf) per filament. The tension is great. Preferably, at least one of the fiber reinforced resin layers is produced by a multi-filament winding method in which a plurality of the fiber bundles are simultaneously wound while being arranged side by side. Preferably, fibers forming the filaments are carbon fibers. Preferably, a resin composition included in each fiber reinforced resin layer is an epoxy resin composition.Type: GrantFiled: April 27, 2016Date of Patent: April 9, 2019Assignees: SUMITOMO RUBBER INDUSTRIES, LTD., GIFU UNIVERSITYInventors: Takehiko Hyodo, Yumi Kanemitsu, Asami Nakai, Akio Ohtani, Tadashi Uozumi
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Publication number: 20180126674Abstract: Provided is a composite material capable of keeping a good appearance even after heat processed, a method for manufacturing a composite material and a method for manufacturing a molded article. The composite material of the present invention contains a commingled yarn that contains a continuous reinforcing fiber (A) and a continuous thermoplastic resin fiber (B) as fiber components thereof; and a thermoplastic resin fiber (C) that keeps the commingled yarn in place, a thermoplastic resin that composes the thermoplastic resin fiber (C) having a melting point 15° C. or more higher than the melting point of a thermoplastic resin that composes the continuous thermoplastic resin fiber (B).Type: ApplicationFiled: April 1, 2016Publication date: May 10, 2018Inventors: Akio OHTANI, Asami NAKAI, Masataka KAJI, Mitsuro TAKAGI, Nobuhiko MATSUMOTO
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Publication number: 20180078834Abstract: To provide a lightweight shaft having excellent strength, a shaft has one or a plurality of fiber reinforced resin layers. At least one of the fiber reinforced resin layers is produced by a filament winding method in which one or a plurality of fiber bundles are wound while tension is applied thereto. The fiber bundles each include a plurality of filaments. The tension applied to the fiber bundles is not less than 0.04 (gf) per filament. The tension is great. Preferably, at least one of the fiber reinforced resin layers is produced by a multi-filament winding method in which a plurality of the fiber bundles are simultaneously wound while being arranged side by side. Preferably, fibers forming the filaments are carbon fibers. Preferably, a resin composition included in each fiber reinforced resin layer is an epoxy resin composition.Type: ApplicationFiled: April 27, 2016Publication date: March 22, 2018Applicants: SUMITOMO RUBBER INDUSTRIES, LTD., GIFU UNIVERSITYInventors: Takehiko HYODO, Yumi KANEMITSU, Asami NAKAI, Akio OHTANI, Tadashi UOZUMI
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Publication number: 20180056553Abstract: Provided is method for manufacturing a molded article that has a first portion, and a second portion that rises up from the first portion, the method comprising: placing a second material on a surface of a first material; the first material containing a reinforcing fiber (A) with a length exceeding 30 mm and a thermoplastic resin (B), the reinforcing fiber (A) being dispersed in the first material, and, the thermoplastic resin (B) being not substantially impregnated into the reinforcing fiber (A), and the second material containing a reinforcing fiber (a) with a length of 1 to 30 mm and a thermoplastic resin (b), the reinforcing fiber (a) being dispersed into the second material, and, the thermoplastic resin (b) being not substantially impregnated into the reinforcing fiber (a),and simultaneously forming the first portion and the second portion by one stroke of pressing, with a cohesive strength of the thermoplastic resin (B) and the thermoplastic resin (b) of 2 N/15 mm or larger, where the cohesive strengthType: ApplicationFiled: April 1, 2016Publication date: March 1, 2018Inventors: Akio OHTANI, Asami NAKAI, Masataka KAJI, Mitsuro TAKAGI, Nobuhiko MATSUMOTO
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Patent number: 9765457Abstract: A braider and a tube body in which braids are arranged on an outer peripheral surface of a mandrel uniformly even if the diameter of the mandrel is uneven. A braider 1 has bobbin carrier conveyance mechanisms 50A and 50B in which bobbin carriers 40A and 40B are conveyed from traveling tracks W1 and W2 to an outside of the traveling tracks W1 and W2 so as to stop winding of braids Y1 and Y2 onto a mandrel 2 and the bobbin carriers 40A and 40B are conveyed from the outside of the traveling tracks W1 and W2 to the traveling tracks W1 and W2 so as to start the winding of the braids Y1 and Y2 onto the mandrel 2.Type: GrantFiled: March 19, 2015Date of Patent: September 19, 2017Assignees: MURATA MACHINERY, LTD., GIFU UNIVERSITYInventors: Ryosuke Tahara, Tadashi Uozumi, Akio Ohtani
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Publication number: 20160271888Abstract: A method of manufacturing an elongated resin molded article having a hollow structure including: using an elongated elastic core including a composite of an elastic body and a continuous yarn; molding a resin material on an outer peripheral surface of the elastic core; and then exerting tensile force on the elastic core and extracting the elastic core in a lengthwise direction so as to obtain the elongated resin molded article having the hollow structure. An elongated resin molded article having a hollow structure, including a curved portion and a branched portion in combination, wherein the resin molded article has a composite structure in which a resin material is reinforced with a braided continuous fiber across an entire length thereof including the curved portion and the branched portion.Type: ApplicationFiled: February 23, 2016Publication date: September 22, 2016Applicant: SUMITOMO RIKO COMPANY LIMITEDInventors: Yasuhiko MIHARA, Shigemitsu HATTORI, Asami NAKAI, Tadashi UOZUMI, Akio OHTANI
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Publication number: 20150375447Abstract: A fiber structure forming apparatus includes a winding device, a tension applying device that applies tension to a fiber bundle that runs from the winding device to a core material, and a heating device that fuses thermoplastic resin bonded to the fiber bundle in a predetermined heating area in which the tension of the tension applying device acts on the fiber bundle.Type: ApplicationFiled: June 25, 2015Publication date: December 31, 2015Applicants: MURATA MACHINERY, LTD.Inventors: Ryosuke TAHARA, Tadashi UOZUMI, Akio OHTANI
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Publication number: 20150284886Abstract: The present invention provides a technique for impregnating a continuous fiber with a thermoplastic resin having a high melt viscosity in a short time, and thereby enables short-cycle molding of a continuous-fiber-reinforced thermoplastic resin composite material. The present invention pertains to a reinforcing fiber/resin fiber composite (10) which is to be used for the production of a continuous-fiber-reinforced, thermoplastic resin composite material and which is characterized in that: the composite (10) comprises a continuous fiber bundle (1) and a thermoplastic resin fiber (cover (2)) which covers the periphery of the continuous fiber bundle (1) in such a state that the continuous fiber bundle (1) is not constricted; and the continuous fiber bundle (1) can be flattened. The present invention also pertains to a process for manufacturing the same.Type: ApplicationFiled: September 13, 2013Publication date: October 8, 2015Inventors: Akio Ohtani, Asami Nakai
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Publication number: 20150275408Abstract: A braider and a tube body in which braids are arranged on an outer peripheral surface of a mandrel uniformly even if the diameter of the mandrel is uneven. A braider 1 has bobbin carrier conveyance mechanisms 50A and 50B in which bobbin carriers 40A and 40B are conveyed from traveling tracks W1 and W2 to an outside of the traveling tracks W1 and W2 so as to stop winding of braids Y1 and Y2 onto a mandrel 2 and the bobbin carriers 40A and 40B are conveyed from the outside of the traveling tracks W1 and W2 to the traveling tracks W1 and W2 so as to start the winding of the braids Y1 and Y2 onto the mandrel 2.Type: ApplicationFiled: March 19, 2015Publication date: October 1, 2015Applicants: Murata Machinery, Ltd., Gifu UniversityInventors: Ryosuke Tahara, Tadashi Uozumi, Akio Ohtani
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Patent number: 7448631Abstract: In a braiding yarn made of expanded graphite 1, a reinforcing wire member 3 made of a stainless steel wire which is easily plastically deformed, and having a diameter of 0.05 to 0.2 mm is spirally wound around the outer periphery of a twisted expanded graphite base member 2 having a width of 3 mm and a thickness of 0.38 mm, at a narrow pitch P of 0.5 to 5 mm without slack. Alternatively, the reinforcing wire member is wound so as to be embedded in the inner side of and along an edge 4 of an expanded graphite tape which is spirally exposed from the outer surface of the expanded graphite base member 2.Type: GrantFiled: March 29, 2005Date of Patent: November 11, 2008Assignee: Nippon Pillar Packing Co., Ltd.Inventors: Masao Shimizu, Seiichi Yamashita, Takahisa Ueda, Masaru Fujiwara, Akio Ohtani
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Publication number: 20050218604Abstract: In a braiding yarn made of expanded graphite 1, a reinforcing wire member 3 made of a stainless steel wire which is easily plastically deformed, and having a diameter of 0.05 to 0.2 mm is spirally wound around the outer periphery of a twisted expanded graphite base member 2 having a width of 3 mm and a thickness of 0.38 mm, at a narrow pitch P of 0.5 to 5 mm without slack. Alternatively, the reinforcing wire member is wound so as to be embedded in the inner side of and along an edge 4 of an expanded graphite tape which is spirally exposed from the outer surface of the expanded graphite base member 2.Type: ApplicationFiled: March 29, 2005Publication date: October 6, 2005Inventors: Masao Shimizu, Seiichi Yamashita, Takahisa Ueda, Masaru Fujiwara, Akio Ohtani