Patents by Inventor Hiromichi Akiyama

Hiromichi Akiyama 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: 11945179
    Abstract: The preset invention is to mold a laminate at a high accuracy by appropriately generating slippage between fiber sheets of the laminate at bending. A method for molding a laminate includes a step in which a plurality of gripping parts, which are arranged apart from each other, grip an area, wherein slippage between fiber sheets is prevented, in a plate-shaped laminate including a plurality of fiber sheets laminated each other; a step in which the plurality of gripping parts grip the area wherein slippage between the fiber sheets is prevented, while maintaining the state wherein relative moving of the area of the laminate and the gripping parts is prevented; and a step in which the gripping parts move so as to subject the laminate to bending.
    Type: Grant
    Filed: December 26, 2019
    Date of Patent: April 2, 2024
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Toshiki Kitazawa, Homare Yamato, Masahiko Shimizu, Hiromichi Akiyama, Akihiro Terasaka
  • Patent number: 11926131
    Abstract: A composite material is capable of suppressing decrease in the strength, which is caused by bending of fibers of a skin material during the time when the composite material is cured. A composite material is provided with a honeycomb core, a first skin material, a second skin material, a thunder-resistant mesh and a resin material; and the resin material is not arranged in a neighborhood portion which is the region corresponding to the region at the front end of the honeycomb core. A first film adhesive is arranged between the first skin material and the honeycomb core; a second film adhesive is arranged between the second skin material and the honeycomb core; and a fourth film adhesive is arranged in the neighborhood portion of the resin material in a weight per square meter, which is lower than those of the first film adhesive and the second film adhesive.
    Type: Grant
    Filed: February 26, 2019
    Date of Patent: March 12, 2024
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Kazuki Noma, Hiromichi Akiyama, Toshio Kozasa, Masayuki Kanemasu, Shunichi Morishima
  • Patent number: 11897638
    Abstract: A pressurized structure panel for forming a pressurized space pressurized inside includes a panel structure having a panel body to receive the pressure, a rib provided in the panel body, and a hollow part formed by the panel body and the rib, a radiation shielding material provided in the hollow part, and a debris bumper provided outside the panel structure and provided spaced apart from the panel structure by a certain spacing. The radiation shielding material includes a material containing hydrogen atoms in molecules.
    Type: Grant
    Filed: July 11, 2022
    Date of Patent: February 13, 2024
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Hiromichi Akiyama, Naoto Azusawa, Yutaka Terada
  • Patent number: 11872779
    Abstract: A method of the invention produces a composite material conjugate in which a first composite material and a second composite material are adhered without using an adhesive, wherein a first prepreg laminate to which a release member is attached is cured to form the first composite material, the release member being made of a material that does not transfer silicone and fluorine to the first prepreg laminate, after detaching the release member from the first composite material, surface treatment that imparts polar functional groups to the surface of the first composite material to which the release member was bonded is carried out to activate the surface, a second prepreg laminate is placed directly on the activated surface of the first composite material, and the second prepreg laminate is cured to form a second composite material adhered to the first composite material.
    Type: Grant
    Filed: May 26, 2020
    Date of Patent: January 16, 2024
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Hiromichi Akiyama, Kiyoka Takagi
  • Patent number: 11804750
    Abstract: The motor includes a sealing material (dry body of a liquid gasket 41) interposed between a joint surface 3b of a motor housing 3 and a joint surface of an inverter housing, and an O-ring 39. The O-ring 39 is interposed between the motor housing 3 and the inverter housing and disposed so as to surround the communication port 3a1 of the refrigerant flow path 3a. The motor housing 3 includes a groove 3d disposed between the sealing material and the O-ring 39 on the joint surface 3b in a surface direction of the joint surface 3b.
    Type: Grant
    Filed: March 9, 2021
    Date of Patent: October 31, 2023
    Assignee: MEIDENSHA CORPORATION
    Inventor: Hiromichi Akiyama
  • Publication number: 20230312850
    Abstract: A method for producing a prepreg in which a reinforcing fiber base material is impregnated with a resin to produce a prepreg, wherein said method comprises: a step for preparing a first resin, which is the resin containing a filler, and a second resin, which is the resin not containing a filler; a step for arranging the second resin adjacent to the reinforcing fiber base material; a step for arranging the first resin adjacent to the reinforcing fiber base material and/or the second resin; and a step for impregnating the reinforcing fiber base material with the resin of the first resin and the second resin.
    Type: Application
    Filed: September 10, 2021
    Publication date: October 5, 2023
    Inventors: Kiichi NISHIGUCHI, Hiromichi AKIYAMA
  • Publication number: 20230294128
    Abstract: The purpose of the present disclosure is to provide a pre-coating processing method and a pre-coating processing system (1) for fiber-reinforced thermoplastic member, which can achieve the coating adherence required in the field of aircraft. In a pre-coating processing method according to the present disclosure, a to-be-coated surface of a fiber-reinforced thermoplastic plastic member (2) is subjected to an activation treatment: in which the to-be-coated surface is activated under a condition such that the surface free energy of the to-be-coated surface immediately after the activation treatment reaches at least 70 mJ/m2; and in which the to-be-coated surface is heated to a temperature at which the modulus of elasticity of the to-be-coated surface becomes lower than that at normal temperature.
    Type: Application
    Filed: January 21, 2021
    Publication date: September 21, 2023
    Inventors: Hiromichi AKIYAMA, Akihisa OKUDA
  • Publication number: 20230271375
    Abstract: A shaping device which forms a fiber sheet into a shape having a shape change section, said shaping device comprising: a shaping mold which is provided to one side of the fiber sheet and serves as a mold for shaping the fiber sheet; a supporting member which has greater rigidity than the fiber sheet and is provided to the other side of the fiber sheet and to an area in which the shape change section is formed; a covering member that covers the fiber sheet; and a pressing device that presses the fiber sheet onto the shaping mold by means of the covering member. The pressing device is a suction device that suctions the atmosphere from between the shaping mold and the covering member.
    Type: Application
    Filed: September 1, 2020
    Publication date: August 31, 2023
    Inventors: Yusei KONDO, Masayuki KANEMASU, Hiromichi AKIYAMA, Kazuki NOMA, Toshio KOZASA
  • Patent number: 11673351
    Abstract: A method is for manufacturing a honeycomb structure including a core material in which a hole is formed to penetrate in a thickness direction and is arranged in a plane direction, and a skin material that is stacked on a surface of the core material. The skin material includes a thermosetting resin. The method includes half-curing the thermosetting resin by placing the skin material in a bag and heating the skin material in a state where an inside of the bag is evacuated and an outside of the bag is under an atmospheric pressure; stacking the skin material in which the thermosetting resin is half-cured onto a side of the surface of the core material; and bonding and integrating the core material and the skin material with each other by pressurizing and heating the stacked core material and skin material with the use of a sealing pressurizing heating facility.
    Type: Grant
    Filed: May 10, 2018
    Date of Patent: June 13, 2023
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Kazuki Noma, Masayuki Yamashita, Masayuki Kanemasu, Mikoto Omori, Hiromichi Akiyama, Toshio Kozasa, Shunichi Morishima
  • Publication number: 20230131087
    Abstract: The motor includes a sealing material (dry body of a liquid gasket 41) interposed between a joint surface 3b of a motor housing 3 and a joint surface of an inverter housing, and an O-ring 39. The O-ring 39 is interposed between the motor housing 3 and the inverter housing and disposed so as to surround the communication port 3a1 of the refrigerant flow path 3a. The motor housing 3 includes a groove 3d disposed between the sealing material and the O-ring 39 on the joint surface 3b in a surface direction of the joint surface 3b.
    Type: Application
    Filed: March 19, 2020
    Publication date: April 27, 2023
    Applicant: MEIDENSHA CORPORATION
    Inventor: Hiromichi AKIYAMA
  • Publication number: 20230020582
    Abstract: A pressurized structure panel for forming a pressurized space pressurized inside includes a panel structure having a panel body to receive the pressure, a rib provided in the panel body, and a hollow part formed by the panel body and the rib, a radiation shielding material provided in the hollow part, and a debris bumper provided outside the panel structure and provided spaced apart from the panel structure by a certain spacing. The radiation shielding material includes a material containing hydrogen atoms in molecules.
    Type: Application
    Filed: July 11, 2022
    Publication date: January 19, 2023
    Inventors: Hiromichi AKIYAMA, Naoto AZUSAWA, Yutaka TERADA
  • Publication number: 20220411338
    Abstract: In a processing method for a ceramic-based composite material in which the ceramic-based composite material is molded by layering sheets obtained by impregnating reinforced fibers with a slurry containing ceramic powder and calcining the sheets after curing, the processing method includes a step of layering the sheets in a layering direction to form a laminate, and a step of covering the laminate with a vacuum bag and evacuating the inside of the vacuum bag to mold a cured laminate. In the step of molding the cured laminate, a slurry-removing material configured to absorb excess slurry is disposed with respect to the laminate, and a degassing circuit member provided on at least one side of the laminate and configured to discharge air bubbles generated inside the laminate is disposed with respect to the laminate.
    Type: Application
    Filed: June 23, 2022
    Publication date: December 29, 2022
    Inventors: Hiromichi AKIYAMA, Yasuhiko TSURU
  • Publication number: 20220380264
    Abstract: A method of forming a ceramic matrix composite with being impregnated with molten metal includes: stacking a plurality of fiber layers that are layers of reinforced fibers impregnated with base resin to form a laminate in which a matrix layer containing fibers extending in a direction of impregnation with the molten metal is disposed between the fiber layers; forming an impregnation path in the matrix layer entirely in an in-plane direction perpendicular to a direction of the stacking in the laminate by carbonizing the formed laminate; and impregnating, with the molten metal, the laminate in which the impregnation path has been formed.
    Type: Application
    Filed: May 25, 2022
    Publication date: December 1, 2022
    Inventors: Hiromichi AKIYAMA, Kiichi NISHIGUCHI, Takahiro SEKIGAWA, Akira FUKUSHIMA, Takeshi YOSHIKAWA, Hisao ESAKA
  • Patent number: 11498290
    Abstract: The present invention addresses the problem of providing a method for molding, using a honeycomb core, a composite material structure that is high-quality, low cost, and leaves less voids. The present disclosure addresses the problem of providing a method for molding, using a honeycomb core, a composite material structure with which it is possible to reduce dimples in a composite material skin at low cost. According to a method for molding a composite material structure of the present disclosure, an uncured composite material honeycomb sandwich panel in which prepreg is laminated on upper and lower surfaces of a honeycomb core via an adhesive is covered with a vacuum bag and placed in an autoclave. After that, the vacuum bag is evacuated and, while the evacuation is being continued, is heated and pressurized by the autoclave to cure a matrix resin of the prepreg and achieve adhesion to the honeycomb core.
    Type: Grant
    Filed: February 26, 2019
    Date of Patent: November 15, 2022
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Kazuki Noma, Hiromichi Akiyama, Toshio Kozasa, Masayuki Kanemasu, Shunichi Morishima
  • Patent number: 11458720
    Abstract: The embodiment includes: a planar graphite heater; a clamp device that moves the graphite heater, which is arranged between a first bonding surface W1a of a first composite material member and a second bonding surface of a second composite material member facing the first bonding surface, in a traveling direction with the graphite heater being in contact with the first bonding surface and the second bonding surface; and a control unit that controls the graphite heater to heat the first bonding surface and the second bonding surface while the graphite heater is in contact with the first bonding surface and the second bonding surface.
    Type: Grant
    Filed: July 29, 2021
    Date of Patent: October 4, 2022
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Akihisa Okuda, Hiromichi Akiyama
  • Publication number: 20220258433
    Abstract: An object is to provide a composite pre-bonding treatment method that stabilizes quality of a bonded part. The present disclosure provides a composite pre-bonding treatment method performed when bonding a composite material to a member. The method includes: (S2) attaching an absorber adapted to absorb a contaminant to a surface of a prepreg laminate that is a precursor of the composite material; (S3) covering the prepreg laminate with a packaging material from above the absorber; (S4) vacuuming the packaging material and heating the prepreg laminate at a temperature lower than a curing temperature of a prepreg; (S5) then removing the packaging material; (S6) peeling off the absorber; (S7) attaching, to a surface of the prepreg laminate with the absorber peeled off, a release member that does not transfer silicone or fluorine to a resin, and then (S9) curing the prepreg laminate to mold the composite material; and (S11) peeling off the release member from the composite material before bonding the member.
    Type: Application
    Filed: June 3, 2020
    Publication date: August 18, 2022
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Hiromichi AKIYAMA, Kiyoka TAKAGI
  • Publication number: 20220242070
    Abstract: A method of the invention produces a composite material conjugate in which a first composite material and a second composite material are adhered without using an adhesive, wherein a first prepreg laminate to which a release member is attached is cured to form the first composite material, the release member being made of a material that does not transfer silicone and fluorine to the first prepreg laminate, after detaching the release member from the first composite material, surface treatment that imparts polar functional groups to the surface of the first composite material to which the release member was bonded is carried out to activate the surface, a second prepreg laminate is placed directly on the activated surface of the first composite material, and the second prepreg laminate is cured to form a second composite material adhered to the first composite material.
    Type: Application
    Filed: May 26, 2020
    Publication date: August 4, 2022
    Inventors: Hiromichi AKIYAMA, Kiyoka TAKAGI
  • Publication number: 20220203667
    Abstract: The embodiment includes: a planar graphite heater; a clamp device that moves the graphite heater, which is arranged between a first bonding surface W1a of a first composite material member and a second bonding surface of a second composite material member facing the first bonding surface, in a traveling direction with the graphite heater being in contact with the first bonding surface and the second bonding surface; and a control unit that controls the graphite heater to heat the first bonding surface and the second bonding surface while the graphite heater is in contact with the first bonding surface and the second bonding surface.
    Type: Application
    Filed: July 29, 2021
    Publication date: June 30, 2022
    Inventors: Akihisa OKUDA, Hiromichi AKIYAMA
  • Publication number: 20220097322
    Abstract: The preset invention is to mold a laminate at a high accuracy by appropriately generating slippage between fiber sheets of the laminate at bending. A method for molding a laminate includes a step in which a plurality of gripping parts, which are arranged apart from each other, grip an area, wherein slippage between fiber sheets is prevented, in a plate-shaped laminate including a plurality of fiber sheets laminated each other; a step in which the plurality of gripping parts grip the area wherein slippage between the fiber sheets is prevented, while maintaining the state wherein relative moving of the area of the laminate and the gripping parts is prevented; and a step in which the gripping parts move so as to subject the laminate to bending.
    Type: Application
    Filed: December 26, 2019
    Publication date: March 31, 2022
    Inventors: Toshiki KITAZAWA, Homare YAMATO, Masahiko SHIMIZU, Hiromichi AKIYAMA, Akihiro TERASAKA
  • Patent number: D1009937
    Type: Grant
    Filed: June 9, 2021
    Date of Patent: January 2, 2024
    Assignees: MEIDENSHA CORPORATION, NISSAN MOTOR CO., LTD.
    Inventors: Takahiro Shimekake, Hiromichi Akiyama, Joji Matsubara, Shinsuke Horibe, Daiji Nakagawa, Sakae Ishida