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).

  • Patent number: 11000977
    Abstract: 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: Grant
    Filed: August 16, 2019
    Date of Patent: May 11, 2021
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Tsuneo Takano, Yuuji Kazehaya, Mitsushi Nishimura
  • Patent number: 10532498
    Abstract: 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: Grant
    Filed: June 11, 2013
    Date of Patent: January 14, 2020
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Tsuneo Takano, Yuuji Kazehaya, Mitsushi Nishimura
  • Publication number: 20190381704
    Abstract: 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: Application
    Filed: August 16, 2019
    Publication date: December 19, 2019
    Applicant: Mitsubishi Rayon Co., Ltd.
    Inventors: Tsuneo TAKANO, Yuuji KAZEHAYA, Mitsushi NISHIMURA
  • Patent number: 10434688
    Abstract: 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: Grant
    Filed: March 19, 2018
    Date of Patent: October 8, 2019
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Tsuneo Takano, Yuuji Kazehaya, Mitsushi Nishimura
  • Patent number: 10323133
    Abstract: 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: Grant
    Filed: September 8, 2015
    Date of Patent: June 18, 2019
    Assignee: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Koichi Akiyama, Yuji Kazehaya, Mitsushi Nishimura, Shinichiro Furuya
  • Patent number: 10265928
    Abstract: 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: Grant
    Filed: July 18, 2013
    Date of Patent: April 23, 2019
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Tsuneo Takano, Yuuji Kazehaya, Mitsushi Nishimura, Akihiro Maeda
  • Publication number: 20180229406
    Abstract: 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: Application
    Filed: March 19, 2018
    Publication date: August 16, 2018
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Tsuneo TAKANO, Yuuji KAZEHAYA, Mitsushi NISHIMURA
  • Patent number: 10022898
    Abstract: 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: Grant
    Filed: June 11, 2013
    Date of Patent: July 17, 2018
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Tsuneo Takano, Yuuji Kazehaya, Mitsushi Nishimura
  • Publication number: 20170298199
    Abstract: 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: Application
    Filed: September 8, 2015
    Publication date: October 19, 2017
    Applicant: Mitsubishi Rayon Co., Ltd.
    Inventors: Koichi AKIYAMA, Yuji KAZEHAYA, Mitsushi NISHIMURA, Shinichiro FURUYA
  • Publication number: 20150183139
    Abstract: 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: Application
    Filed: June 11, 2013
    Publication date: July 2, 2015
    Applicant: MITSUBISHI RAYON CO., LTD.
    Inventors: Tsuneo Takano, Yuuji Kazehaya, Mitsushi Nishimura
  • Publication number: 20150183183
    Abstract: 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: Application
    Filed: July 18, 2013
    Publication date: July 2, 2015
    Inventors: Tsuneo Takano, Yuuji Kazehaya, Mitsushi Nishimura, Akihiro Maeda
  • Publication number: 20150151464
    Abstract: 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: Application
    Filed: June 11, 2013
    Publication date: June 4, 2015
    Applicant: MITSUBISHI RAYON CO., LTD.
    Inventors: Tsuneo Takano, Yuuji Kazehaya, Mitsushi Nishimura