Patents by Inventor Norio Hirayama
Norio Hirayama 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: 20240025137Abstract: Provided is a manufacturing method for efficiently manufacturing a thermoplastic resin composite containing a thermoplastic resin and a fiber by pultrusion. In the manufacturing method according to an embodiment, fibers 10 are continuously impregnated with a thermoplastic resin-forming composition containing an active hydrogen component and a diisocyanate component, after impregnation, the fibers 10 are caused to pass through a heat-molding unit 30 to perform polymerization of a thermoplastic resin and molding of a thermoplastic resin composite 12, and the thermoplastic resin composite 12 is continuously pulled out from the heat-molding unit 30. In the method, a heating temperature of the heat-molding unit 30 is set to be lower than a glass transition temperature of the thermoplastic resin, so that the thermoplastic resin of the thermoplastic resin composite 12 pulled out from the heat-molding unit 30 is in a glassy state.Type: ApplicationFiled: November 12, 2021Publication date: January 25, 2024Applicant: DKS Co. Ltd.Inventors: Norio HIRAYAMA, Tadashi TAKEKAWA, Yoshinori YAMADA, Yudai SHIOJI
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Publication number: 20230312394Abstract: To provide a glass composition for glass fiber that includes biosolubility and can achieve long fiber formation. The glass composition for glass fiber of the present invention includes SiO2 in the range of 35.0 to 55.0% by mass, B2O3 in the range of 10.0 to 30.0% by mass, Al2O3 in the range of 14.5 to 30.0% by mass, and CaO and MgO in the range of 8.7 to 25.0% by mass in total, with respect to the total amount, and the content S of SiO2, the content B of B2O3, the content A of Al2O3, the content C of CaO, and the content M of MgO satisfy the following formula (1): 11.3 ? S × C + M / A + B ? 20.Type: ApplicationFiled: December 23, 2021Publication date: October 5, 2023Inventors: Takashi NONAKA, Jun ITO, Takahiro UTSUGI, Koichi NAKAMURA, Norio HIRAYAMA, Hidero UNUMA
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Patent number: 11753751Abstract: A surface-colored glass cloth including a glass cloth which includes a warp and a weft and a plurality of colored portions which are attached to a surface of the glass cloth is disclosed. One colored portion is disposed in each area including one colored point. An average distance D between the adjacent colored points is 0.50 to 10.00 mm. When the number of warp rows is St, a warp widening degree is Et, the number of weft rows is Sy, and a weft widening degree is Ey in the glass cloth, D, St, Et, Sy, and Ey satisfy a formula: 3.3?100×D1/2×(Et×Ey)/(St×Sy)?25.0.Type: GrantFiled: February 1, 2021Date of Patent: September 12, 2023Assignee: NITTO BOSEKI CO., LTD.Inventors: Hideaki Monma, Kazunori Sano, Norio Hirayama
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Patent number: 11739807Abstract: An energy absorption member (21) includes a hollow cylindrical fiber-reinforced composite material including reinforcement fibers (22), in which tensile strength S (GPa), tensile modulus of elasticity M (GPa), and elongation rate E (%) satisfy the following expression (1), and a curable resin composition with which the reinforcement fibers (22) are impregnated. The volume content of the reinforcement fibers (22) in the fiber-reinforced composite material is 30 to 80%. 11.0?S2×M1/8/E1/2?22.Type: GrantFiled: October 17, 2018Date of Patent: August 29, 2023Assignee: Nitto Boseki Co., Ltd.Inventors: Shunsuke Harashima, Kazunori Sano, Norio Hirayama, Kazuhiro Sakata
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Publication number: 20230133229Abstract: A surface-colored glass cloth including a glass cloth which includes a warp and a weft and a plurality of colored portions which are attached to a surface of the glass cloth is disclosed. One colored portion is disposed in each area including one colored point. An average distance D between the adjacent colored points is 0.50 to 10.00 mm. When the number of warp rows is St, a warp widening degree is Et, the number of weft rows is Sy, and a weft widening degree is Ey in the glass cloth, D, St, Et, Sy, and Ey satisfy a formula: 3.3?100×D1/2×(Et×Ey)/(St×Sy)?25.0.Type: ApplicationFiled: February 1, 2021Publication date: May 4, 2023Applicant: NITTO BOSEKI CO., LTD.Inventors: Hideaki Monma, Kazunori Sano, Norio Hirayama
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Publication number: 20220098387Abstract: Provided is a fiber-reinforced resin hollow cylindrical body that is highly resistant to torsion and also comprises impact energy absorbency enabling the cylindrical body to be used in an energy absorbing member such as a crush box. The fiber-reinforced resin hollow cylindrical body is composed of a reinforcing fiber yarn and a resin composition with which the reinforcing fiber yarn is impregnated. The fiber diameter D of the reinforcing fiber yarn is in the range of 10.0 to 18.0 ?m, the weight T of the reinforcing fiber yarn is in the range of 100 to 1500 tex, the volume content V of the reinforcing fiber yarn in the fiber-reinforced resin hollow cylindrical body is in the range of 40.0 to 80.0%, the D, T and V satisfy the following formula (1): 0.090?T1/4×V/D3?0.155 ??(1).Type: ApplicationFiled: November 11, 2019Publication date: March 31, 2022Inventors: Yuta TAKAHASHI, Yosuke NUKUI, Kazunori SANO, Norio HIRAYAMA, Kazuhiro SAKATA
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Publication number: 20210364276Abstract: A strain distribution measurement system includes a tensile tester that deforms a test piece to measure mechanical properties of a material of the test piece, and a strain distribution measuring device that measures a strain distribution of the test piece. The strain distribution measuring device measures the strain distribution of the test piece based on a distribution of at least one of a reflectance or a polarization characteristic on the main face of the test piece.Type: ApplicationFiled: May 20, 2021Publication date: November 25, 2021Applicant: SHIMADZU CORPORATIONInventors: Tomotaka NAGASHIMA, Yukimitsu IWANAGA, Norio HIRAYAMA
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Patent number: 11040908Abstract: Provided is a method for producing glass fiber, capable of stably performing the spinning of glass fibers without mixing of red crystals in glass fibers. When glass fibers are formed by discharging, from a nozzle tip, a molten glass obtained by melting glass raw materials mixed so as to give a glass composition including, when melted, in relation to the total amount thereof, SiO2 in a range from 57.0 to 62.0% by mass, Al2O3 in a range from 15.0 to 20.0% by mass, MgO in a range from 7.5 to 12.0% by mass, and CaO in a range from 9.0 to 16.5% by mass, and having a total content of SiO2, Al2O3, MgO and CaO of 98.0% by mass or more, the glass composition includes B2O3, Li2O, or B2O3 and Li2O as an additive or additives capable of suppressing the generation of red crystals.Type: GrantFiled: August 21, 2015Date of Patent: June 22, 2021Assignee: Nitto Boseki Co., Ltd.Inventors: Takashi Nonaka, Norio Hirayama, Kazuaki Minami, Yosuke Nukui
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Publication number: 20200018373Abstract: An energy absorption member (21) includes a hollow cylindrical fiber-reinforced composite material including reinforcement fibers (22), in which tensile strength S (GPa), tensile modulus of elasticity M (GPa), and elongation rate E (%) satisfy the following expression (1), and a curable resin composition with which the reinforcement fibers (22) are impregnated. The volume content of the reinforcement fibers (22) in the fiber-reinforced composite material is 30 to 80%. 11.0?S2×M1/8/E1/2?22.Type: ApplicationFiled: October 17, 2018Publication date: January 16, 2020Inventors: Shunsuke HARASHIMA, Kazunori SANO, Norio HIRAYAMA, Kazuhiro SAKATA
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Publication number: 20180237335Abstract: Provided is a method for producing glass fiber, capable of stably performing the spinning of glass fibers without mixing of red crystals in glass fibers. When glass fibers are formed by discharging, from a nozzle tip, a molten glass obtained by melting glass raw materials mixed so as to give a glass composition including, when melted, in relation to the total amount thereof, SiO2 in a range from 57.0 to 62.0% by mass, Al2O3 in a range from 15.0 to 20.0% by mass, MgO in a range from 7.5 to 12.0% by mass, and CaO in a range from 9.0 to 16.5% by mass, and having a total content of SiO2, Al2O3, MgO and CaO of 98.0% by mass or more, the glass composition includes B2O3, Li2O, or B2O3 and Li2O as an additive or additives capable of suppressing the generation of red crystals.Type: ApplicationFiled: August 21, 2015Publication date: August 23, 2018Inventors: Takashi NONAKA, Norio HIRAYAMA, Kazuaki MINAMI, Yosuke NUKUI
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Patent number: 9878942Abstract: Provided is a glass composition for glass fiber allowing spinning to be stably performed without mixing of red foreign substances into glass fibers. The glass composition for glass fiber includes, in relation to the total amount thereof, SiO2 in a content falling within a range from 57.0 to 60.0% by mass, Al2O3 in a content falling within a range from 17.5 to 20.0% by mass, MgO in a content falling within a range from 8.5 to 12.0% by mass, CaO in a content falling within a range from 10.0 to 13.0% by mass and B2O3 in a content falling within a range from 0.5 to 1.5% by mass, the total content of SiO2, Al2O3, MgO and CaO being 98.0% by mass or more.Type: GrantFiled: December 18, 2015Date of Patent: January 30, 2018Assignee: Nitto Boseki Co., Ltd.Inventors: Takashi Nonaka, Norio Hirayama, Kazuaki Minami, Yosuke Nukui
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Publication number: 20170226003Abstract: Provided is a glass composition for glass fiber allowing spinning to be stably performed without mixing of red foreign substances into glass fibers. The glass composition for glass fiber includes, in relation to the total amount thereof, SiO2 in a content falling within a range from 57.0 to 60.0% by mass, Al2O3 in a content falling within a range from 17.5 to 20.0% by mass, MgO in a content falling within a range from 8.5 to 12.0% by mass, CaO in a content falling within a range from 10.0 to 13.0% by mass and B2O3 in a content falling within a range from 0.5 to 1.5% by mass, the total content of SiO2, Al2O3, MgO and CaO being 98.0% by mass or more.Type: ApplicationFiled: December 18, 2015Publication date: August 10, 2017Inventors: Takashi NONAKA, Norio HIRAYAMA, Kazuaki MINAMI, Yosuke NUKUI
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Patent number: 8689586Abstract: A glass-melting device for producing glass fibers capable effectively reducing inclusion of bubbles into glass fibers to be spun, and a method for producing glass fibers using the same are provided. A glass-melting device 100 for producing glass fibers comprises: a first glass-melting tank 12; a conduit 14 extending downward from the first glass-melting tank 12; a sucking device 18 for exposing the first glass-melting tank 12 to a reduced-pressure atmosphere; a second glass-melting tank 20 provided on a lower portion of the conduit 14 and exposed to an atmospheric-pressure atmosphere; and a bushing 22 provided at a bottom portion of the second glass-melting tank 20 and equipped with a number of nozzles 22a.Type: GrantFiled: March 8, 2010Date of Patent: April 8, 2014Assignee: Nitto Boseki Co., Ltd.Inventors: Norio Hirayama, Naohiro Miyanaga, Masahiko Takahashi, Kentarou Ogawa
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Patent number: 8689588Abstract: An object of the present invention is to effectively reduce mixing of bubbles into a spun glass fiber. A glass-melting device 10 for producing glass fibers includes; a first glass-melting tank 12 exposed to a reduced-pressure atmosphere; a second glass-melting tank 14 and a third glass-melting tank 16 arranged below the first glass-melting tank 12; an ascending conduit 18 that sends up molten glass resulting from melting in the second glass-melting tank 14 to deliver the molten glass to the first glass-melting tank 12; a descending conduit 20 that sends the molten glass down from the first glass-melting tank 12 to deliver the molten glass to the third glass-melting tank 16; a decompression housing 22; and a bushing 24. The glass-melting device 10 further includes heating means for separately heating the first glass-melting tank 12, the second glass-melting tank 14, the third glass-melting tank 16, the ascending conduit 18, the descending conduit 20 and the bushing 24.Type: GrantFiled: March 8, 2010Date of Patent: April 8, 2014Assignee: Nitto Boseki Co., Ltd.Inventors: Norio Hirayama, Masahiko Takahashi, Naohiro Miyanaga, Kentarou Ogawa
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Patent number: 8530053Abstract: A high heat-resistant composite material which comprises a polymerizable composition comprising a bi-functional epoxy compound, a tri- or more-functional epoxy compound and a polymerization initiator, wherein the polymerization initiator comprises a sodium salt or potassium salt of mono- or poly-functional carboxylic acid, and a reinforcing fiber such as a carbon fiber or a glass fiber; and a vehicle member or a construction member comprising the above heat-resistant composite material. Said composite material comprises an epoxy polymer having high heat-resistant physical properties over those of a conventional epoxy polymer as a matrix, and exhibits an extremely high retention factor of storage modulus at high temperature.Type: GrantFiled: October 25, 2005Date of Patent: September 10, 2013Assignees: Nagase Chemtex Corporation, Nitto Boseki Co., Ltd.Inventors: Hirofumi Nishida, Norio Hirayama
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Publication number: 20120167633Abstract: A glass-melting device for producing glass fibers capable effectively reducing inclusion of bubbles into glass fibers to be spun, and a method for producing glass fibers using the same are provided. A glass-melting device 100 for producing glass fibers comprises: a first glass-melting tank 12; a conduit 14 extending downward from the first glass-melting tank 12; a sucking device 18 for exposing the first glass-melting tank 12 to a reduced-pressure atmosphere; a second glass-melting tank 20 provided on a lower portion of the conduit 14 and exposed to an atmospheric-pressure atmosphere; and a bushing 22 provided at a bottom portion of the second glass-melting tank 20 and equipped with a number of nozzles 22a.Type: ApplicationFiled: March 8, 2010Publication date: July 5, 2012Inventors: Norio Hirayama, Naohiro Miyanaga, Masahiko Takahashi, Kentarou Ogawa
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Publication number: 20120055200Abstract: An object of the present invention is to effectively reduce mixing of bubbles into a spun glass fiber. A glass-melting device 10 for producing glass fibers includes: a first glass-melting tank 12 exposed to a reduced-pressure atmosphere; a second glass-melting tank 14 and a third glass-melting tank 16 arranged below the first glass-melting tank 12; an ascending conduit 18 that sends up molten glass resulting from melting in the second glass-melting tank 14 to deliver the molten glass to the first glass-melting tank 12; a descending conduit 20 that sends the molten glass down from the first glass-melting tank 12 to deliver the molten glass to the third glass-melting tank 16; a decompression housing 22; and a bushing 24. The glass-melting device 10 further includes heating means for separately heating the first glass-melting tank 12, the second glass-melting tank 14, the third glass-melting tank 16, the ascending conduit 18, the descending conduit 20 and the bushing 24.Type: ApplicationFiled: March 8, 2010Publication date: March 8, 2012Inventors: Norio Hirayama, Masahiko Takahashi, Naohiro Miyanaga, Kentarou Ogawa
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Publication number: 20090215929Abstract: Disclosed herein are a method for producing a fiber-reinforced thermally meltable epoxy resin having excellent heat resistance using a thermally meltable epoxy resin having a high melting initiation temperature and a fiber-reinforced plastic molded by the method. The method for producing a fiber-reinforced thermally meltable epoxy resin comprises the steps of: (I) impregnating reinforcing fibers with a compound (A) having two epoxy groups in one molecule and a compound (B) having two phenolic hydroxyl groups in one molecule; and (II) linearly polymerizing the compounds (A) and (B) impregnated into the reinforcing fibers by polyaddition reaction, wherein at least a part of the compound (A) and/or at least a part of the compound (B) are/is a compound having a fluorene skeleton, and the compound (A) and the compound (B) are mixed in such a ratio that the number of moles of epoxy groups in the compound (A) is 0.9 to 1.1 times the number of moles of phenolic hydroxyl groups in the compound (B).Type: ApplicationFiled: May 12, 2006Publication date: August 27, 2009Applicants: Nagase Chemtex Corporation, Nitto Boseki Co., Ltd.Inventors: Hirofumi Nishida, Norio Hirayama
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Patent number: 7547412Abstract: A composite material is a Mo—Cu based composite material having a Cu content of 30 to 70 weight % and containing a copper pool phase and an Mo—Cu based composite phase. The copper pool phase is contained in an amount of 10-50 weight %. A heat-sink member uses the composite material.Type: GrantFiled: October 28, 2003Date of Patent: June 16, 2009Assignee: A.L.M.T. CorporationInventors: Masayuki Itoh, Tadashi Arikawa, Norio Hirayama, Yoshinari Amano, Nobuyuki Saitoh
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Publication number: 20080139698Abstract: A high heat-resistant composite material which comprises a polymerizable composition comprising a bi-functional epoxy compound, a tri- or more-functional epoxy compound and a polymerization initiator, wherein the polymerization initiator comprises a sodium salt or potassium salt of mono- or poly-functional carboxylic acid, and a reinforcing fiber such as a carbon fiber or a glass fiber; and a vehicle member or a construction member comprising the above heat-resistant composite material. Said composite material comprises an epoxy polymer having high heat-resistant physical properties over those of a conventional epoxy polymer as a matrix, and exhibits an extremely high retention factor of storage modulus at high temperature.Type: ApplicationFiled: October 25, 2005Publication date: June 12, 2008Applicants: Nagase Chemtex Corporation, Nitto Boseki Co., Ltd.Inventors: Hirofumi Nishida, Norio Hirayama