Patents by Inventor Motoki Hiraoka
Motoki Hiraoka 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: 20240062936Abstract: A method of producing a rare earth magnetic powder, the method including: heat-treating a mixture containing a SmFeN-based magnetic powder containing Sm, Fe, and N and a modifier powder containing Zn; and dispersing the heat-treated SmFeN-based magnetic powder using a resin-coated metal media or a resin-coated ceramic media.Type: ApplicationFiled: August 11, 2023Publication date: February 22, 2024Applicants: NICHIA CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hisashi MAEHARA, Masaaki ITO, Tomonori INUZUKA, Motoki HIRAOKA
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Patent number: 11735345Abstract: The method for manufacturing the Halbach magnet array includes the steps of: (a) magnetizing at least two first magnetic material pieces in a direction parallel to a first direction, and (b) magnetizing at least one second magnetic material piece in a direction parallel to a second direction perpendicular to the first direction, in this order. In the step (a), the first magnetic material pieces and the second magnetic material piece are alternately arranged in the second direction with the first magnetic material pieces being each adhered to the adjacent second magnetic material piece, and the magnetization is performed under a condition in which a residual magnetization ratio r1 of the first magnetic material pieces is higher than a residual magnetization ratio r2 of the second magnetic material piece.Type: GrantFiled: May 27, 2022Date of Patent: August 22, 2023Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Keiu Kanada, Reimi Sakaguchi, Masaaki Ito, Takuya Nomura, Daisuke Ichigozaki, Motoki Hiraoka, Mitsutoshi Akita
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Publication number: 20230139716Abstract: The present invention is a method for producing a rare earth magnet, including preparing a magnetic powder and a modifier powder, mixing them to obtain a mixed powder, compression-molding the mixed powder in a magnetic field to obtain a magnetic-field molded body, and pressure-sintering the magnetic-field molded body to obtain a sintered body, wherein the magnetic powder includes a first particle group and a second particle group, the D50 values of the first particle group and the second particle group are denoted by d1 ?m and d2 ?m, respectively, d1 and d2 satisfy the relationship of 0.350?d2/d1?0.500, and the ratio between the total volume of the first particle group and the total volume of the second particle group is from 9:1 to 4:1; and a rare earth magnet obtained by the production method.Type: ApplicationFiled: November 1, 2022Publication date: May 4, 2023Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, NICHIA CORPORATIONInventors: Masaaki ITO, Motoki HIRAOKA, Reimi TABUCHI, Hisashi MAEHARA, Masanori OKANAN
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Publication number: 20220384083Abstract: The method for manufacturing the Halbach magnet array includes the steps of: (a) magnetizing at least two first magnetic material pieces in a direction parallel to a first direction, and (b) magnetizing at least one second magnetic material piece in a direction parallel to a second direction perpendicular to the first direction, in this order. In the step (a), the first magnetic material pieces and the second magnetic material piece are alternately arranged in the second direction with the first magnetic material pieces being each adhered to the adjacent second magnetic material piece, and the magnetization is performed under a condition in which a residual magnetization ratio r1 of the first magnetic material pieces is higher than a residual magnetization ratio r2 of the second magnetic material piece.Type: ApplicationFiled: May 27, 2022Publication date: December 1, 2022Inventors: Keiu Kanada, Reimi Sakaguchi, Masaaki Ito, Takuya Nomura, Daisuke Ichigozaki, Motoki Hiraoka, Mitsutoshi Akita
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Patent number: 11309777Abstract: A rotating electrical machine capable of obtaining a higher torque while limiting the amount of permanent magnets used. A magnetic pole of a rotor includes an auxiliary magnet embedded in a rotor core and at least one main magnet arranged on an outer circumferential side than the auxiliary magnet of the rotor. In each magnetic pole, the distance from an end of the main magnet, the end facing the auxiliary magnet, to the auxiliary magnet facing the main magnet is shorter than the length of the main magnet in the radial direction. In a cross-section orthogonal to the rotation axis of the rotating electrical machine, the main magnets of each magnetic pole are arranged so as to be asymmetrical about a virtual line passing the rotation axis and axisymmetrically dividing the auxiliary magnet.Type: GrantFiled: March 4, 2021Date of Patent: April 19, 2022Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Keiu Kanada, Daisuke Ichigozaki, Kazuaki Haga, Motoki Hiraoka, Daichi Maruyama, Hisamitsu Toshida, Kyoko Nakamura, Akira Yamashita
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Patent number: 11165317Abstract: A manufacturing method of a core for a rotary electric machine, the method includes inserting a permanent magnet that is not yet magnetized in a magnet insertion hole that is formed in a rotor core; injecting a magnet fixing material in the magnet insertion hole; curing the magnet fixing material by heating the rotor core and the permanent magnet; and magnetizing the permanent magnet before a temperature of the rotor core and the permanent magnet decreases to a normal temperature, after the curing of the magnet fixing material.Type: GrantFiled: January 14, 2020Date of Patent: November 2, 2021Assignees: AISIN AW CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Naomi Inoue, Hiroaki Wakimoto, Tsuyoshi Miyaji, Motoki Hiraoka, Daisuke Ichigozaki
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Publication number: 20210281153Abstract: A rotating electrical machine capable of obtaining a higher torque while limiting the amount of permanent magnets used. A magnetic pole of a rotor includes an auxiliary magnet embedded in a rotor core and at least one main magnet arranged on an outer circumferential side than the auxiliary magnet of the rotor. In each magnetic pole, the distance from an end of the main magnet, the end facing the auxiliary magnet, to the auxiliary magnet facing the main magnet is shorter than the length of the main magnet in the radial direction.Type: ApplicationFiled: March 4, 2021Publication date: September 9, 2021Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Keiu KANADA, Daisuke ICHIGOZAKI, Kazuaki HAGA, Motoki HIRAOKA, Daichi MARUYAMA, Hisamitsu TOSHIDA, Kyoko NAKAMURA, Akira YAMASHITA
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Patent number: 10920331Abstract: A film deposition device (1A) of a metal film (F) includes a positive electrode (11), a solid electrolyte membrane (13), and a power supply part (14) that applies a voltage between the positive electrode (11) and a base material (B) to be a negative electrode. The solid electrolyte membrane (13) allows a water content to be 15% by mass or more and is capable of containing a metal ion. The power supply part (14) applies a voltage between the positive electrode and the base material in a state where the solid electrolyte membrane is disposed on a surface of the positive electrode such that metal made of metal ions contained inside the solid electrolyte membrane (13) is precipitated on a surface of the base material (B).Type: GrantFiled: August 4, 2014Date of Patent: February 16, 2021Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yuki Sato, Hiroshi Yanagimoto, Motoki Hiraoka
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Patent number: 10760172Abstract: In a film forming method, in a state where a metal solution is sealed in a first accommodation chamber of a housing with a solid electrolyte membrane and a fluid is sealed in a second accommodation chamber of a placing table with a thin film, a substrate is placed on the placing table and the placing table and the housing are moved relative to each other to cause the substrate to be interposed between the solid electrolyte membrane and the thin film, the solid electrolyte membrane and the thin film are pressed against the substrate interposed therebetween to cause the solid electrolyte membrane and the thin film to conform to a surface and a rear surface of the substrate, thereby forming a metal film.Type: GrantFiled: April 26, 2019Date of Patent: September 1, 2020Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yuki Sato, Motoki Hiraoka, Hirofumi Iisaka
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Publication number: 20200266691Abstract: A manufacturing method of a core for a rotary electric machine, the method includes inserting a permanent magnet that is not yet magnetized in a magnet insertion hole that is formed in a rotor core; injecting a magnet fixing material in the magnet insertion hole; curing the magnet fixing material by heating the rotor core and the permanent magnet; and magnetizing the permanent magnet before a temperature of the rotor core and the permanent magnet decreases to a normal temperature, after the curing of the magnet fixing material.Type: ApplicationFiled: January 14, 2020Publication date: August 20, 2020Applicants: AISIN AW CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Naomi INOUE, Hiroaki WAKIMOTO, Tsuyoshi MIYAJI, Motoki HIRAOKA, Daisuke ICHIGOZAKI
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Publication number: 20190249321Abstract: In a film forming method, in a state where a metal solution is sealed in a first accommodation chamber of a housing with a solid electrolyte membrane and a fluid is sealed in a second accommodation chamber of a placing table with a thin film, a substrate is placed on the placing table and the placing table and the housing are moved relative to each other to cause the substrate to be interposed between the solid electrolyte membrane and the thin film, the solid electrolyte membrane and the thin film are pressed against the substrate interposed therebetween to cause the solid electrolyte membrane and the thin film to conform to a surface and a rear surface of the substrate, thereby forming a metal film.Type: ApplicationFiled: April 26, 2019Publication date: August 15, 2019Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yuki SATO, Motoki Hiraoka, Hirofumi IIsaka
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Patent number: 10358734Abstract: A nickel solution for forming a film that can suppress generation of hydrogen gas between a solid electrolyte membrane and a substrate while the solid electrolyte membrane and the substrate are brought into contact with each other. The pH of the nickel solution for forming a film is in the range of 4.2 to 6.1. The nickel solution for forming a film further contains a pH buffer solution that has a buffer function in the range of the pH and does not form insoluble salts or complexes with the nickel ions during formation of the film.Type: GrantFiled: October 2, 2014Date of Patent: July 23, 2019Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Motoki Hiraoka, Hiroshi Yanagimoto, Yuki Sato, Yoshitaka Shimmei, Kensuke Akamatsu
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Patent number: 10337116Abstract: In a film forming method, in a state where a metal solution is sealed in a first accommodation chamber of a housing with a solid electrolyte membrane and a fluid is sealed in a second accommodation chamber of a placing table with a thin film, a substrate is placed on the placing table and the placing table and the housing are moved relative to each other to cause the substrate to be interposed between the solid electrolyte membrane and the thin film, the solid electrolyte membrane and the thin film are pressed against the substrate interposed therebetween to cause the solid electrolyte membrane and the thin film to conform to a surface and a rear surface of the substrate, thereby forming a metal film.Type: GrantFiled: May 17, 2017Date of Patent: July 2, 2019Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yuki Sato, Motoki Hiraoka, Hirofumi Iisaka
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Patent number: 10301735Abstract: A method of forming a metal coating includes: disposing a solid electrolyte membrane (13) between an anode (11) and a substrate (B) which forms a cathode; bringing a solution (L) containing metal ions into contact with an anode-side portion of the solid electrolyte membrane (13); and causing, in a state where the solid electrolyte membrane (13) is in contact with the substrate (B), a current to flow from the anode (11) to the cathode so as to form a metal coating formed of the metal on the surface of the substrate (B). The metal coating is formed by repeating a current-flowing period (T) in which a current flows from the anode (11) to the cathode and a non-current-flowing period (N) in which a current does not flow between the anode (11) and the cathode.Type: GrantFiled: February 9, 2015Date of Patent: May 28, 2019Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hiroshi Yanagimoto, Motoki Hiraoka, Yuki Sato, Yoshitaka Shinmei
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Patent number: 10199145Abstract: Provided is a rare-earth magnet containing no heavy rare-earth metals such as Dy or Tb in a grain boundary phase, has a modifying alloy for increasing coercivity (in particular, coercivity under a high-temperature atmosphere) infiltrated thereinto at lower temperature than in the conventional rare-earth magnets, has high coercivity, and has relatively high magnetizability, and a production method therefor. The rare-earth magnet RM includes a RE-Fe—B-based main phase MP with a nanocrystalline structure (where RE is at least one of Nd or Pr) and a grain boundary phase BP around the main phase, the grain boundary phase containing a RE-X alloy (where X is a metallic element other than heavy rare-earth elements). Crystal grains of the main phase MP are oriented along the anisotropy axis, and each crystal grain of the main phase, when viewed from a direction perpendicular to the anisotropy axis, has a plane that is quadrilateral in shape or has a close shape thereto.Type: GrantFiled: November 12, 2012Date of Patent: February 5, 2019Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Tetsuya Shoji, Akira Manabe, Noritaka Miyamoto, Motoki Hiraoka, Shinya Omura, Daisuke Ichigozaki, Shinya Nagashima
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Patent number: 10161055Abstract: A method of forming a wiring pattern includes: a) forming a metal underlayer including a first underlying wiring layer which is in contact with an electrode, a second underlying wiring layer which is not in contact with the electrode, and an underlying connection layer which connects the first underlying wiring layer to the second underlying wiring layer; b) forming a metal plating layer on the metal underlayer through electroplating; and c) removing a metal connection portion through etching. The metal connection portion is the underlying connection layer covered with the metal plating layer. The etching includes bringing a solid electrolyte material that contains a solution into which metal of the metal connection portion is dissolved, into contact with the metal connection portion and applying a voltage between the metal connection portion and the solid electrolyte material.Type: GrantFiled: March 31, 2016Date of Patent: December 25, 2018Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yuki Sato, Motoki Hiraoka, Hiroshi Yanagimoto, Hiroki Usui
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Patent number: 10151042Abstract: A coating forming device for forming a metal coating on a surface of a substrate includes: an anode; a power supply; and a solid electrolyte membrane disposed between the anode and the substrate and contains metal ions. The solid electrolyte membrane includes: a contact surface that is a region contacting a coating-forming region where the metal coating is formed; and a concave portion recessed relative to the contact surface such that, when the contact surface contacts the coating-forming region, the solid electrolyte membrane is not in contact with a portion of the surface of the substrate excluding the coating-forming region. The metal ions are reduced to form the metal coating on the coating-forming region by the power supply applying a voltage between the anode and the substrate.Type: GrantFiled: March 8, 2016Date of Patent: December 11, 2018Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hiroki Usui, Hiroshi Yanagimoto, Motoki Hiraoka, Yuki Sato
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Publication number: 20180291228Abstract: A composite resin includes an acrylic resin constituent unit, an epoxy resin constituent unit, and a polysiloxane constituent unit. A proportion of the polysiloxane constituent unit in the composite resin is 1.5 weight % to 12 weight % in terms of SiO2. When the composite resin is used, it is possible to provide a coating film having high corrosion resistance.Type: ApplicationFiled: March 30, 2018Publication date: October 11, 2018Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Satoshi TAKATA, Motoki HIRAOKA, Hiroshi YANAGIMOTO
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Patent number: 10077505Abstract: A metal-film forming apparatus includes: an anode; a resin substrate having a surface on which a conductor pattern layer that serves as a cathode is formed; a solid electrolyte membrane that contains metal ions and is between the anode and the resin substrate, the solid electrolyte membrane contacting a surface of the conductor pattern layer when a metal film is formed; a power supply; and a conductive member that is arranged contacting the conductor pattern layer when the metal film is formed, such that a negative electrode of the power supply is electrically connected to the conductor pattern layer, the conductive member being detachable from the conductor pattern layer, wherein the metal ions are reduced to deposit metal that forms the metal film on the surface of the conductor pattern layer when the voltage is applied.Type: GrantFiled: December 28, 2015Date of Patent: September 18, 2018Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Motoki Hiraoka, Hiroshi Yanagimoto, Yuki Sato
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Patent number: 10047452Abstract: Provided are a film formation device and a film formation method for forming a metal film, with which metal films with a desired thickness can be continuously formed on surfaces of a plurality of substrates. A film formation device 1A includes at least a positive electrode 11, a negative electrode 12, a solid electrolyte membrane 13 arranged on a surface of the positive electrode 12, between. the positive electrode and a substrate to serve as the negative electrode, and a power supply unit E adapted to apply a voltage across the positive electrode 11 and the substrate B. A voltage is applied across the positive electrode 11 and the substrate B to deposit metal on a surface of the substrate from metal ions contained in the solid electrolyte membrane 13, whereby a metal film F made of metal is formed, The positive electrode 11 is made of a porous body that allows a solution L containing metal ions to pass therethrough and supplies the metal ions to the solid electrolyte membrane 13.Type: GrantFiled: February 21, 2013Date of Patent: August 14, 2018Assignee: Toyota Jidosha Kabushiki KaishaInventors: Motoki Hiraoka, Hiroshi Yanagimoto, Yuki Sato, Takayasu Yoshioka