Patents by Inventor Mitsushi Nishimura
Mitsushi Nishimura 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: 11000977Abstract: The present invention applies to a molding method for a fiber-reinforced plastic structure having an internal cavity. Firstly, grain groups, which mainly consist of a plurality of high-rigidity grains, are accommodated in bags, and a plurality of cores are formed. A reinforcing fiber substrate, is placed between the plurality of adjacent cores so as to be interposed therebetween. For example, a plurality of molding base materials are prepared by surrounding each core with a prepreg, and the plurality of molding base materials are combined and placed inside a molding die, and the molding base materials are compression molded. When compression molding, a part of the outer surface of the cores is locally pressurized, and the internal pressure of the cores is increased, changing the shape thereof, thus eliminating voids that are present between the cores and the prepreg and/or the prepreg and the molding surface of the die.Type: GrantFiled: August 16, 2019Date of Patent: May 11, 2021Assignee: Mitsubishi Chemical CorporationInventors: Tsuneo Takano, Yuuji Kazehaya, Mitsushi Nishimura
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Patent number: 10532498Abstract: The present invention applies to a molding method for a fiber-reinforced plastic structure having an internal cavity. Firstly, grain groups, which mainly consist of a plurality of high-rigidity grains, are accommodated in bags, and a plurality of cores are formed. A reinforcing fiber substrate, is placed between the plurality of adjacent cores so as to be interposed therebetween. For example, a plurality of molding base materials are prepared by surrounding each core with a prepreg, and the plurality of molding base materials are combined and placed inside a molding die, and the molding base materials are compression molded. When compression molding, a part of the outer surface of the cores is locally pressurized, and the internal pressure of the cores is increased, changing the shape thereof, thus eliminating voids that are present between the cores and the prepreg and/or the prepreg and the molding surface of the die.Type: GrantFiled: June 11, 2013Date of Patent: January 14, 2020Assignee: Mitsubishi Chemical CorporationInventors: Tsuneo Takano, Yuuji Kazehaya, Mitsushi Nishimura
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Publication number: 20190381704Abstract: The present invention applies to a molding method for a fiber-reinforced plastic structure having an internal cavity Firstly, grain groups, which mainly consist of a plurality of high-rigidity grains, are accommodated in bags, and a plurality of cores are formed. A reinforcing fiber substrate, is placed between the plurality of adjacent cores so as to be interposed therebetween. For example, a plurality of molding base materials are prepared by surrounding each core with a prepreg, and the plurality of molding base materials are combined and placed inside a molding die, and the molding base materials are compression molded. When compression molding, a part of the outer surface of the cores is locally pressurized, and the internal pressure of the cores is increased, changing the shape thereof, thus eliminating voids that are present between the cores and the prepreg and/or the prepreg and the molding surface of the die.Type: ApplicationFiled: August 16, 2019Publication date: December 19, 2019Applicant: Mitsubishi Rayon Co., Ltd.Inventors: Tsuneo TAKANO, Yuuji KAZEHAYA, Mitsushi NISHIMURA
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Patent number: 10434688Abstract: A method for molding fiber-reinforced plastic. A core is formed in a desired shape by accommodating, in a flexible bag, a grain group containing plurality of grains. The core is placed inside a prepreg containing resin and fibers, and the prepreg, in which the core is housed is placed in a molding die and compression molded. When doing so, the grain group contains first and second grains (a,b) that satisfy the equation (1). (1) 1.1?(Da/Db)?2.0 In the equation Da is the grain diameter of the grains (a), and Db is the grain diameter of the grain (b). When using a molding die to mold a molded article having a cavity, the above mentioned molding method enables an increase in the internal pressure of the core in order to change the peripheral surface area of the core, without using a pressurized gas and/or pressurized liquid.Type: GrantFiled: March 19, 2018Date of Patent: October 8, 2019Assignee: Mitsubishi Chemical CorporationInventors: Tsuneo Takano, Yuuji Kazehaya, Mitsushi Nishimura
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Patent number: 10323133Abstract: The present invention relates to a molding material, having: (A): a fiber substrate made of carbon fibers 5 mm or longer; (B): at least either an epoxy (meth)acrylate resin or an unsaturated polyester resin; (C): (C-1) inorganic fibrous filler with a cross-sectional area of at least 0.8 ?m2, or (C-2) inorganic flaky filler with a cross-sectional area of at least 0.05 ?m2, both of which have an aspect ratio of 2.0 or higher and a length of less than 3 mm; and (D): a polyisocyanate compound.Type: GrantFiled: September 8, 2015Date of Patent: June 18, 2019Assignee: MITSUBISHI CHEMICAL CORPORATIONInventors: Koichi Akiyama, Yuji Kazehaya, Mitsushi Nishimura, Shinichiro Furuya
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Patent number: 10265928Abstract: A fiber reinforced composite material structure comprises a thin sheet that includes a first surface and a plurality of convex portions which protrude and are regularly arranged on the first surface and each of which includes a top face; and a surface material that includes a second surface and is bonded to the top faces on the second surface.Type: GrantFiled: July 18, 2013Date of Patent: April 23, 2019Assignee: Mitsubishi Chemical CorporationInventors: Tsuneo Takano, Yuuji Kazehaya, Mitsushi Nishimura, Akihiro Maeda
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Publication number: 20180229406Abstract: A method for molding fiber-reinforced plastic. A core is formed in a desired shape by accommodating, in a flexible bag, a grain group containing plurality of grains. The core is placed inside a prepreg containing resin and fibers, and the prepreg, in which the core is housed is placed in a molding die and compression molded. When doing so, the grain group contains first and second grains (a,b) that satisfy the equation (1). (1) 1.1?(Da/Db)?2.0 In the equation Da is the grain diameter of the grains (a), and Db is the grain diameter of the grain (b). When using a molding die to mold a molded article having a cavity, the above mentioned molding method enables an increase in the internal pressure of the core in order to change the peripheral surface area of the core, without using a pressurized gas and/or pressurized liquid.Type: ApplicationFiled: March 19, 2018Publication date: August 16, 2018Applicant: Mitsubishi Chemical CorporationInventors: Tsuneo TAKANO, Yuuji KAZEHAYA, Mitsushi NISHIMURA
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Patent number: 10022898Abstract: A method for molding fiber-reinforced plastic. A core is formed in a desired shape by accommodating, in a flexible bag, a grain group containing plurality of grains. The core is placed inside a prepreg containing resin and fibers, and the prepreg, in which the core is housed is placed in a molding die and compression molded. When doing so, the grain group contains first and second grains (a,b) that satisfy the equation (1). (1) 1.1?(Da/Db)?2.0 In the equation Da is the grain diameter of the grains (a), and Db is the grain diameter of the grain (b). When using a molding die to mold a molded article having a cavity, the above mentioned molding method enables an increase in the internal pressure of the core in order to change the peripheral surface area of the core, without using a pressurized gas and/or pressurized liquid.Type: GrantFiled: June 11, 2013Date of Patent: July 17, 2018Assignee: Mitsubishi Chemical CorporationInventors: Tsuneo Takano, Yuuji Kazehaya, Mitsushi Nishimura
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Publication number: 20170298199Abstract: The present invention relates to a molding material, having: (A): a fiber substrate made of carbon fibers 5 mm or longer; (B): at least either an epoxy (meth)acrylate resin or an unsaturated polyester resin; (C): (C-1) inorganic fibrous filler with a cross-sectional area of at least 0.8 ?m2, or (C-2) inorganic flaky filler with a cross-sectional area of at least 0.05 ?m2, both of which have an aspect ratio of 2.0 or higher and a length of less than 3 mm; and (D): a polyisocyanate compound.Type: ApplicationFiled: September 8, 2015Publication date: October 19, 2017Applicant: Mitsubishi Rayon Co., Ltd.Inventors: Koichi AKIYAMA, Yuji KAZEHAYA, Mitsushi NISHIMURA, Shinichiro FURUYA
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Publication number: 20150183139Abstract: A method for molding fiber-reinforced plastic. A core is formed in a desired shape by accommodating, in a flexible bag, a grain group containing plurality of grains. The core is placed inside a prepreg containing resin and fibers, and the prepreg, in which the core is housed is placed in a molding die and compression molded. When doing so, the grain group contains first and second grains (a,b) that satisfy the equation (1). (1) 1.1?(Da/Db)?2.0 In the equation Da is the grain diameter of the grains (a), and Db is the grain diameter of the grain (b). When using a molding die to mold a molded article having a cavity, the above mentioned molding method enables an increase in the internal pressure of the core in order to change the peripheral surface area of the core, without using a pressurized gas and/or pressurized liquid.Type: ApplicationFiled: June 11, 2013Publication date: July 2, 2015Applicant: MITSUBISHI RAYON CO., LTD.Inventors: Tsuneo Takano, Yuuji Kazehaya, Mitsushi Nishimura
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Publication number: 20150183183Abstract: A fiber reinforced composite material structure comprises a thin sheet that includes a first surface and a plurality of convex portions which protrude and are regularly arranged on the first surface and each of which includes a top face; and a surface material that includes a second surface and is bonded to the top faces on the second surface.Type: ApplicationFiled: July 18, 2013Publication date: July 2, 2015Inventors: Tsuneo Takano, Yuuji Kazehaya, Mitsushi Nishimura, Akihiro Maeda
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Publication number: 20150151464Abstract: The present invention applies to a molding method for a fiber-reinforced plastic structure having an internal cavity. Firstly, grain groups, which mainly consist of a plurality of high-rigidity grains, are accommodated in bags, and a plurality of cores are formed. A reinforcing fiber substrate, is placed between the plurality of adjacent cores so as to be interposed therebetween. For example, a plurality of molding base materials are prepared by surrounding each core with a prepreg, and the plurality of molding base materials are combined and placed inside a molding die, and the molding base materials are compression molded. When compression molding, a part of the outer surface of the cores is locally pressurized, and the internal pressure of the cores is increased, changing the shape thereof, thus eliminating voids that are present between the cores and the prepreg and/or the prepreg and the molding surface of the die.Type: ApplicationFiled: June 11, 2013Publication date: June 4, 2015Applicant: MITSUBISHI RAYON CO., LTD.Inventors: Tsuneo Takano, Yuuji Kazehaya, Mitsushi Nishimura