Patents by Inventor Hajime Okutsu
Hajime Okutsu 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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Patent number: 11951692Abstract: The purpose of the present invention is to provide a fiber-reinforced resin material having minimal directionality of strength as well as excellent productivity, a method and device for manufacturing a fiber-reinforced resin material whereby a molded article is obtained, and a device for inspecting a fiber bundle group. A method for manufacturing a sheet-shaped fiber-reinforced resin material in which a paste (P1) is impregnated between cut fiber bundles (CF), the method for manufacturing a fiber-reinforced resin material including a coating step applying a coating of a paste (P1) on a first sheet (S11) conveyed in a predetermined direction, a cutting step for cutting a long fiber bundle (CF) using a cutter (113A), a scattering step for dispersing the cut fiber bundles (CF) and scattering the cut fiber bundles (CF) on the paste (P1), and an impregnation step for pressing a fiber bundle group (F1) and the paste (P1) on the first sheet (S11) and impregnating the paste (P1) between the fiber bundles (CF).Type: GrantFiled: January 18, 2023Date of Patent: April 9, 2024Assignee: Mitsubishi Chemical CorporationInventors: Hiroshi Iwata, Nobuyuki Yamamoto, Hajime Okutsu, Ryuichi Ishikawa, Koichi Akiyama, Takayuki Kobayashi
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Publication number: 20230150210Abstract: The purpose of the present invention is to provide a fiber-reinforced resin material having minimal directionality of strength as well as excellent productivity, a method and device for manufacturing a fiber-reinforced resin material whereby a molded article is obtained, and a device for inspecting a fiber bundle group. A method for manufacturing a sheet-shaped fiber-reinforced resin material in which a paste (P1) is impregnated between cut fiber bundles (CF), the method for manufacturing a fiber-reinforced resin material including a coating step applying a coating of a paste (P1) on a first sheet (S11) conveyed in a predetermined direction, a cutting step for cutting a long fiber bundle (CF) using a cutter (113A), a scattering step for dispersing the cut fiber bundles (CF) and scattering the cut fiber bundles (CF) on the paste (P1), and an impregnation step for pressing a fiber bundle group (F1) and the paste (P1) on the first sheet (S11) and impregnating the paste (P1) between the fiber bundles (CF).Type: ApplicationFiled: January 18, 2023Publication date: May 18, 2023Applicant: Mitsubishi Chemical CorporationInventors: Hiroshi IWATA, Nobuyuki YAMAMOTO, Hajime OKUTSU, Ryuichi ISHIKAWA, Koichi AKIYAMA, Takayuki KOBAYASHI
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Patent number: 11597165Abstract: The purpose of the present invention is to provide a fiber-reinforced resin material having minimal directionality of strength as well as excellent productivity, a method and device for manufacturing a fiber-reinforced resin material whereby a molded article is obtained, and a device for inspecting a fiber bundle group. A method for manufacturing a sheet-shaped fiber-reinforced resin material in which a paste (P1) is impregnated between cut fiber bundles (CF), the method for manufacturing a fiber-reinforced resin material including a coating step applying a coating of a paste (P1) on a first sheet (S11) conveyed in a predetermined direction, a cutting step for cutting a long fiber bundle (CF) using a cutter (113A), a scattering step for dispersing the cut fiber bundles (CF) and scattering the cut fiber bundles (CF) on the paste (P1), and an impregnation step for pressing a fiber bundle group (F1) and the paste (P1) on the first sheet (S11) and impregnating the paste (P1) between the fiber bundles (CF).Type: GrantFiled: April 4, 2019Date of Patent: March 7, 2023Assignee: Mitsubishi Chemical CorporationInventors: Hiroshi Iwata, Nobuyuki Yamamoto, Hajime Okutsu, Ryuichi Ishikawa, Koichi Akiyama, Takayuki Kobayashi
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Patent number: 10927479Abstract: One mode of the invention relates to a producing a device for chopped fiber bundles having a chopper unit including a cutting blade for cutting long fiber bundles, a guide for restricting the travel direction of the fiber bundles to be supplied to the cutting means, and a structure, provided between the chopper unit and the guide, that widens the fiber bundles. The invention also relates to method for producing chopped fiber bundles by widening fiber bundles while restricting the travel direction of the long fiber bundles to be supplied to chopper unit by a guide, and obtaining chopped fiber bundles by cutting the fiber bundles with the chopper unit.Type: GrantFiled: March 20, 2018Date of Patent: February 23, 2021Assignee: Mitsubishi Chemical CorporationInventors: Tadao Samejima, Ryuichi Ishikawa, Hiroshi Iwata, Yukihiro Mizutori, Masatoshi Kamata, Yasushi Watanabe, Hajime Okutsu
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Patent number: 10889919Abstract: One mode of the invention relates to a producing a device for chopped fiber bundles having a chopper unit including a cutting blade for cutting long fiber bundles, a guide for restricting the travel direction of the fiber bundles to be supplied to the cutting means, and a structure, provided between the chopper unit and the guide, that widens the fiber bundles. The invention also relates to method for producing chopped fiber bundles by widening fiber bundles while restricting the travel direction of the long fiber bundles to be supplied to chopper unit by a guide, and obtaining chopped fiber bundles by cutting the fiber bundles with the chopper unit.Type: GrantFiled: March 20, 2018Date of Patent: January 12, 2021Assignee: Mitsubishi Chemical CorporationInventors: Tadao Samejima, Ryuichi Ishikawa, Hiroshi Iwata, Yukihiro Mizutori, Masatoshi Kamata, Yasushi Watanabe, Hajime Okutsu
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Publication number: 20190224926Abstract: The purpose of the present invention is to provide a fiber-reinforced resin material having minimal directionality of strength as well as excellent productivity, a method and device for manufacturing a fiber-reinforced resin material whereby a molded article is obtained, and a device for inspecting a fiber bundle group. A method for manufacturing a sheet-shaped fiber-reinforced resin material in which a paste (P1) is impregnated between cut fiber bundles (CF), the method for manufacturing a fiber-reinforced resin material including a coating step applying a coating of a paste (P1) on a first sheet (S11) conveyed in a predetermined direction, a cutting step for cutting a long fiber bundle (CF) using a cutter (113A), a scattering step for dispersing the cut fiber bundles (CF) and scattering the cut fiber bundles (CF) on the paste (P1), and an impregnation step for pressing a fiber bundle group (F1) and the paste (P1) on the first sheet (S11) and impregnating the paste (P1) between the fiber bundles (CF).Type: ApplicationFiled: April 4, 2019Publication date: July 25, 2019Applicant: Mitsubishi Chemical CorporationInventors: Hiroshi Iwata, Nobuyuki Yamamoto, Hajime Okutsu, Ryuichi Ishikawa, Koichi Akiyama, Takayuki Kobayashi
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Patent number: 10343352Abstract: The purpose of the present invention is to provide a fiber-reinforced resin material having minimal directionality of strength as well as excellent productivity, a method and device for manufacturing a fiber-reinforced resin material whereby a molded article is obtained, and a device for inspecting a fiber bundle group. A method for manufacturing a sheet-shaped fiber-reinforced resin material in which a paste (P1) is impregnated between cut fiber bundles (CF), the method for manufacturing a fiber-reinforced resin material including a coating step applying a coating of a paste (P1) on a first sheet (S11) conveyed in a predetermined direction, a cutting step for cutting a long fiber bundle (CF) using a cutter (113A), a scattering step for dispersing the cut fiber bundles (CF) and scattering the cut fiber bundles (CF) on the paste (P1), and an impregnation step for pressing a fiber bundle group (F1) and the paste (P1) on the first sheet (S11) and impregnating the paste (P1) between the fiber bundles (CF).Type: GrantFiled: June 24, 2016Date of Patent: July 9, 2019Assignee: Mitsubishi Chemical CorporationInventors: Hiroshi Iwata, Nobuyuki Yamamoto, Hajime Okutsu, Ryuichi Ishikawa, Koichi Akiyama, Takayuki Kobayashi
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Patent number: 10300666Abstract: The purpose of the present invention is to provide a fiber-reinforced resin material having minimal directionality of strength as well as excellent productivity, a method and device for manufacturing a fiber-reinforced resin material whereby a molded article is obtained, and a device for inspecting a fiber bundle group. A method for manufacturing a sheet-shaped fiber-reinforced resin material in which a paste (P1) is impregnated between cut fiber bundles (CF), the method for manufacturing a fiber-reinforced resin material including a coating step applying a coating of a paste (P1) on a first sheet (S11) conveyed in a predetermined direction, a cutting step for cutting a long fiber bundle (CF) using a cutter (113A), a scattering step for dispersing the cut fiber bundles (CF) and scattering the cut fiber bundles (CF) on the paste (P1), and an impregnation step for pressing a fiber bundle group (F1) and the paste (P1) on the first sheet (S11) and impregnating the paste (P1) between the fiber bundles (CF).Type: GrantFiled: June 24, 2016Date of Patent: May 28, 2019Assignee: Mitsubishi Chemical CorporationInventors: Hiroshi Iwata, Nobuyuki Yamamoto, Hajime Okutsu, Ryuichi Ishikawa, Koichi Akiyama, Takayuki Kobayashi
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Publication number: 20190134928Abstract: Provided are a preform production apparatus and a preform production method which efficiently produce high quality preforms in which the occurrence of wrinkles, zigzagging of fibers and cracking are limited in production of a preform having a three-dimensional shape. The production apparatus is a preform production apparatus for shaping a reinforcing fiber base material into a specified shape prior to main molding thereof in order to obtain a fiber-reinforced resin molding of a desired shape, the apparatus comprising a stationary mold with a surface shape corresponding to the specified shape an end effector for pressing the reinforcing fiber base material on a surface of the stationary mold; and a control unit for moving the end effector.Type: ApplicationFiled: December 31, 2018Publication date: May 9, 2019Applicant: Mitsubishi Chemical CorporationInventors: Akira Miyauchi, Tadao Samejima, Hajime Okutsu
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Publication number: 20180209076Abstract: One mode of the invention relates to a producing device for chopped fiber bundles comprising: cutting means including a cutting blade for cutting long fiber bundles, guide means for restricting the travel direction of the fiber bundles to be supplied to the cutting means, and widening means provided between the cutting means and the guide means and for widening the fiber bundles; and a producing method for chopped fiber bundles comprising: widening fiber bundles by widening means provided between a cutting means and guide means while restricting the travel direction of the long fiber bundles to be supplied to the cutting means by the guide means, and obtaining chopped fiber bundles by cutting the fiber bundles with the cutting means including a cutting blade.Type: ApplicationFiled: March 20, 2018Publication date: July 26, 2018Applicant: Mitsubishi Chemical CorporationInventors: Tadao SAMEJIMA, Ryuichi ISHIKAWA, Hiroshi IWATA, Yukihiro MIZUTORI, Masatoshi KAMATA, Yasushi WATANABE, Hajime OKUTSU
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Publication number: 20180162070Abstract: The purpose of the present invention is to provide a fiber-reinforced resin material having minimal directionality of strength as well as excellent productivity, a method and device for manufacturing a fiber-reinforced resin material whereby a molded article is obtained, and a device for inspecting a fiber bundle group. A method for manufacturing a sheet-shaped fiber-reinforced resin material in which a paste (P1) is impregnated between cut fiber bundles (CF), the method for manufacturing a fiber-reinforced resin material including a coating step applying a coating of a paste (P1) on a first sheet (S11) conveyed in a predetermined direction, a cutting step for cutting a long fiber bundle (CF) using a cutter (113A), a scattering step for dispersing the cut fiber bundles (CF) and scattering the cut fiber bundles (CF) on the paste (P1), and an impregnation step for pressing a fiber bundle group (F1) and the paste (P1) on the first sheet (S11) and impregnating the paste (P1) between the fiber bundles (CF).Type: ApplicationFiled: June 24, 2016Publication date: June 14, 2018Applicant: Mitsubishi Chemical CorporationInventors: Hiroshi IWATA, Nobuyuki YAMAMOTO, Hajime OKUTSU, Ryuichi ISHIKAWA, Koichi AKIYAMA, Takayuki KOBAYASHI
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Publication number: 20170198076Abstract: An object of the invention is to provide a curable composition having a HALS skeleton and capable of producing polymers having excellent weather resistance and outer appearance. The present invention provides a curable composition including at least a monomer component that contains a monomer (A) represented by a certain formula and a monomer (B) polymerizable with the monomer (A). In the curable composition, the content of the monomer (A) is 0.01 to 35 mol % in the monomer component, and the content of the monomer (B) is 65 to 99.99 mol % in the monomer component.Type: ApplicationFiled: March 23, 2017Publication date: July 13, 2017Applicant: MITSUBISHI RAYON CO., LTD.Inventors: Tetsuya NODA, Fuminori Nakaya, Hajime Okutsu
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Patent number: 9663603Abstract: An object of the invention is to provide a curable composition having a HALS skeleton and capable of producing polymers having excellent weather resistance and outer appearance. The present invention provides a curable composition including at least a monomer component that contains a monomer (A) represented by a certain formula and a monomer (B) polymerizable with the monomer (A). In the curable composition, the content of the monomer (A) is 0.01 to 35 mol % in the monomer component, and the content of the monomer (B) is 65 to 99.99 mol % in the monomer component.Type: GrantFiled: May 31, 2012Date of Patent: May 30, 2017Assignee: MITSUBISHI RAYON CO., LTD.Inventors: Tetsuya Noda, Fuminori Nakaya, Hajime Okutsu
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Publication number: 20140094581Abstract: An object of the invention is to provide a curable composition having a HALS skeleton and capable of producing polymers having excellent weather resistance and outer appearance. The present invention provides a curable composition including at least a monomer component that contains a monomer (A) represented by a certain formula and a monomer (B) polymerizable with the monomer (A). In the curable composition, the content of the monomer (A) is 0.01 to 35 mol % in the monomer component, and the content of the monomer (B) is 65 to 99.99 mol % in the monomer component.Type: ApplicationFiled: May 31, 2012Publication date: April 3, 2014Applicant: MITSUBISHI RAYON CO., LTD.Inventors: Tetsuya Noda, Fuminori Nakaya, Hajime Okutsu
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Publication number: 20110230623Abstract: Disclosed is a method for continuously producing an acrylic resin sheet containing 50% by mass or more of methyl methacrylate units, which comprises irradiating an active energy ray-polymerizable viscous liquid 2 which contains a polymer, satisfies the following equations (1) and (2), and has a viscosity of 5,000 Pa·s or more with the active energy ray to cure the liquid while transferring the liquid in the state of being held between an endless belt 3 and a film 5 transmissive to the active energy ray or between first and second films transmissive to the active energy ray, 30,000?Mw?500,000??(1) 35?(9/200,000)×Mw?P?60??(2) wherein, in these equations, Mw represents a weight average molecular weight [?] of the polymer contained in the liquid, and P represents a content [% by mass] of the polymer contained in the liquid.Type: ApplicationFiled: August 7, 2009Publication date: September 22, 2011Applicant: Mitsubishi Rayon Co., Ltd.Inventors: Takayuki Hirano, Hajime Okutsu, Naoki Nishida, Eita Funami, Hiroshi Okafuji, Hideto Yamazawa, Dalsuke Takayama, Yutaka Ishihara
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Publication number: 20090140454Abstract: Disclosed is an apparatus for continuous plate formation using belts, in which a polymerizable raw material is fed to one end of a space surrounded by opposed surfaces of two endless belts 1 and 1? facing each other and by gaskets 7 disposed at side edges of these belt surfaces so as to be sandwiched between the surfaces, the polymerizable raw material is polymerized in a section where the belts are heated or cooled with warm water, and a plate-form polymer is taken out of the other end of the space, which contains three or more recovery vessels 13 for recovering the warm water used to heat or cool the belts, and temperature sensing elements (thermometers 14) for measuring the temperature of the warm water recovered in every recovery vessel 13.Type: ApplicationFiled: July 25, 2005Publication date: June 4, 2009Applicant: MITSUBISHI RAYON CO., LTD.Inventors: Tomonari Murakami, Hirotoshi Mizota, Hajime Okutsu
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Patent number: 7268323Abstract: To be provided are a heat treatment apparatus having blocking members which block gaps between the side walls of nozzle boxes provided with slit nozzles, whose size in the lengthwise direction is greater than the width of a sheet, and the side walls of a heat treatment chamber, and gas having a uniform velocity fluctuating no more than ±25% in the lengthwise direction of the slit nozzles is blown out of the slit nozzles to subject the sheet to heat treatment, resulting in little unevenness of temperature in the widthwise direction and reduced energy loss, and a heat treatment method using this heat treatment apparatus.Type: GrantFiled: February 27, 2004Date of Patent: September 11, 2007Assignee: Mitsubishi Rayon Co., Ltd.Inventors: Hitoshi Tomobe, Hirotoshi Mizota, Hajime Okutsu, Tomonari Murakami, Daisuke Morimoto
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Publication number: 20060157468Abstract: To be provided are a heat treatment apparatus having blocking members which block gaps between the side walls of nozzle boxes provided with slit nozzles, whose size in the lengthwise direction is greater than the width of a sheet, and the side walls of a heat treatment chamber, and gas having a uniform velocity fluctuating no more than ±25% in the lengthwise direction of the slit nozzles is blown out of the slit nozzles to subject the sheet to heat treatment, resulting in little unevenness of temperature in the widthwise direction and reduced energy loss, and a heat treatment method using this heat treatment apparatus.Type: ApplicationFiled: February 27, 2004Publication date: July 20, 2006Applicant: Mitsubishi Rayon Co., Ltd.Inventors: Hitoshi Tomobe, Hirotoshi Mizota, Hajime Okutsu, Tomonari Murakami, Daisuke Morimoto
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Publication number: 20060078640Abstract: Disclosed are a belt type continuous plate manufacturing apparatus including two endless belts 11, 11? with their facing belt surfaces running toward the same direction at the same speed, and a gasket 7 sandwiched by belt surfaces at their both side edge portions, in which a polymerizable raw material is fed into a space surrounded by the facing belt surfaces and the gasket from its one end, and solidified together with running of the belts in a heating zone, and a plate polymer is taken out from the other end, wherein a plurality of upper and lower roll pairs 4, 4? each composed of an upper roll 4 and a lower roll 4? and having axes orthogonally grossing the belt running direction are placed along the belt running direction as a mechanism of holding the belt surfaces of the endless belts 1, 1? in the heating zone, and the outer diameter D of the roll body portion of the upper and lower roll pair is in the range of 100 mm to 500 mm; and a method of producing a plate polymer using this apparatus.Type: ApplicationFiled: December 8, 2003Publication date: April 13, 2006Inventors: Hajime Okutsu, Hirotoshi Mizota, Tomonari Murakami, Hitoshi Tomobe, Daisuke Morimoto
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Publication number: 20060071363Abstract: A belt type continuous plate manufacturing apparatus comprising two facing endless belts 1, 1? and gaskets 7 sandwiched by belt surfaces at their both side edge portions, wherein a polymerizable raw material is fed into a space surrounded by the facing belt surfaces and the gaskets 7 from its one end, the polymerizable raw material is solidified together with running of the belts in a heating zone, and the plate polymer is taken out from the other end, characterized in that three or more upper and lower roll pairs satisfying the following formulae (1) and (2) are placed so that respective axes thereof orthogonally cross the belt running direction, between a raw material feeding position and a heating initiation position; and a method of producing a plate polymer by using it: D/Z?0.04 (1), 0.30?D/X?0.99 (2) [D=outermost diameter of roll body portion (mm), Z=width of roll body portion (mm), X=distance between axis centers of adjacent upper and lower roll pairs (mm)].Type: ApplicationFiled: December 22, 2003Publication date: April 6, 2006Applicant: Mitsubishi Rayon Co., LtdInventors: Hajime Okutsu, Hirotoshi Mizota