Patents by Inventor Takuya Murai

Takuya Murai 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: 12031190
    Abstract: A method for producing a Ni- or Ti-based alloy product includes preliminarily processing a hot working material of a Ni- or Ti-based alloy after hot working into a predetermined shape; heating and holding the material at a solution treatment temperature to obtain a material held in a heated state; and cooling the material to obtain a solution-treated material. The cooling step includes placing a flow path-forming member having a space for forming a flow path for a fluid on a surface of the material held in a heated state to form a fluid flow path defined by the surface of the material held in a heated state and an inner surface of the space of the flow path-forming member; and allowing a fluid to flow in the fluid flow path so that the fluid in the flow path locally cools a part of the surface of the material.
    Type: Grant
    Filed: November 26, 2020
    Date of Patent: July 9, 2024
    Assignee: PROTERIAL, LTD.
    Inventors: Mari Yoshihara, Takuya Murai, Tadashi Fukuda, Shoichi Takahashi
  • Publication number: 20220403493
    Abstract: Provided is a method for producing a Ni- or Ti-based alloy product, the method capable of reliably locally cooling and effectively cooling. The method includes the steps: heating and holding a hot working material of a Ni- or Ti-based alloy after hot forging or hot ring rolling at a solution treatment temperature to obtain a material held in a heated state, and cooling the material held in a heated state to obtain a solution-treated material. The cooling step includes carrying out local cooling by contacting a cooling member with a part of a surface of the material held in a heated state.
    Type: Application
    Filed: November 26, 2020
    Publication date: December 22, 2022
    Inventors: Mari YOSHIHARA, Takuya MURAI, Tadashi FUKUDA, Shoichi TAKAHASHI
  • Publication number: 20220389535
    Abstract: Provided is a method for producing a Ni- or Ti-based alloy product, the method capable of locally increasing the cooling rate and effectively cooling. The method includes the steps: preliminarily processing a hot working material of a Ni- or Ti-based alloy after hot working into a predetermined shape; heating and holding the material at a solution treatment temperature to obtain a material held in a heated state; and cooling the material held in a heated state to obtain a solution-treated material. The cooling step includes placing a flow path-forming member having a space for forming a flow path for a fluid on a surface of the material held in a heated state to form a fluid flow path defined by the surface of the material held in a heated state and an inner surface of the space of the flow path-forming member; and allowing a fluid to flow in the fluid flow path so that the fluid in the flow path locally cools a part of the surface of the material held in a heated state.
    Type: Application
    Filed: November 26, 2020
    Publication date: December 8, 2022
    Inventors: Mari YOSHIHARA, Takuya MURAI, Tadashi FUKUDA, Shoichi TAKAHASHI
  • Patent number: 11135642
    Abstract: A method for manufacturing a ring-rolled product, which manufactures the ring-rolled product from a ring material, includes a step of rolling the ring material, which has an operation of rolling the ring material from both inner and outer circumferential sides thereof between a mandrel roll and a main roll in a state of rotating the ring material toward one side in a circumferential direction thereof, and induction-heating the ring material by induction heating elements. An induction heating element is disposed on only an outer circumferential side of the ring material or is disposed on each of both the inner and outer circumferential sides in a region immediately before the rolling, or an inclined portion is provided in an outer-peripheral edge portion of a coil in the induction heating element.
    Type: Grant
    Filed: December 1, 2016
    Date of Patent: October 5, 2021
    Assignee: HITACHI METALS, LTD.
    Inventors: Takuya Murai, Takanori Matsui, Yuji Ishiwari, Tomoyoshi Kiwake
  • Patent number: 11077481
    Abstract: A method for manufacturing a ring-rolled product forms the ring-rolled product from a ring material by using a mandrel roll and a main roll. The mandrel roll and the main roll are configured so as to contact inner and outer circumferential surfaces of the ring material, respectively, and are configured so as to press the ring material in a radial direction thereof in a state in which the ring material is rotated in a circumferential direction thereof. The method includes a step of rolling the ring material that includes an operation of induction-heating the main roll by at least one induction heating element and rolling the ring material between the mandrel roll and the main roll, which is induction-heated.
    Type: Grant
    Filed: December 1, 2016
    Date of Patent: August 3, 2021
    Assignee: HITACHI METALS, LTD.
    Inventors: Takuya Murai, Takanori Matsui, Yuji Ishiwari, Tomoyoshi Kiwake
  • Publication number: 20200306818
    Abstract: A method for manufacturing a ring-rolled product forms the ring-rolled product from a ring material by using a mandrel roll and a main roll. The mandrel roll and the main roll are configured so as to contact inner and outer circumferential surfaces of the ring material, respectively, and are configured so as to press the ring material in a radial direction thereof in a state in which the ring material is rotated in a circumferential direction thereof. The method includes a step of rolling the ring material that includes an operation of induction-heating the main roll by at least one induction heating element and rolling the ring material between the mandrel roll and the main roll, which is induction-heated.
    Type: Application
    Filed: December 1, 2016
    Publication date: October 1, 2020
    Inventors: Takuya MURAI, Takanori MATSUI, Yuji ISHIWARI, Tomoyoshi KIWAKE
  • Publication number: 20200306817
    Abstract: A method for manufacturing a ring-rolled product, which manufactures the ring-rolled product from a ring material, includes a step of rolling the ring material, which has an operation of rolling the ring material from both inner and outer circumferential sides thereof between a mandrel roll and a main roll in a state of rotating the ring material toward one side in a circumferential direction thereof, and induction-heating the ring material by induction heating elements. An induction heating element is disposed on only an outer circumferential side of the ring material or is disposed on each of both the inner and outer circumferential sides in a region immediately before the rolling, or an inclined portion is provided in an outer-peripheral edge portion of a coil in the induction heating element.
    Type: Application
    Filed: December 1, 2016
    Publication date: October 1, 2020
    Inventors: Takuya MURAI, Takanori MATSUI, Yuji ISHIWARI, Tomoyoshi KIWAKE
  • Publication number: 20200110410
    Abstract: A device that processes map data used in self-position estimation of a mobile body including an external sensor, includes a processor and a memory that stores a computer program executable by the processor. The processor reads data from a storage device storing data of a two-dimensional map including a point cloud or occupied grids is stored according to a command of the computer program, extracts from the two-dimensional map one or more line segments defined by the point cloud or the occupied points on the two-dimensional map, selects at least one specific region from at least one region included in one or more line segments or at least one region defined by at least one pair of line segments, and associates additional data indicating a position of a specific region on the two-dimensional map with the data.
    Type: Application
    Filed: October 1, 2019
    Publication date: April 9, 2020
    Inventors: Takuya MURAI, Tetsuo SAEKI, Shinji SUZUKI
  • Publication number: 20200061686
    Abstract: In a method of cooling a main roll, strength of a shaft and a peripheral portion thereof of the main roll is sufficiently secured, maintenance of the main roll is facilitated, and the shaft and the peripheral portion thereof of the main roll are efficiently cooled. In a method of manufacturing a ring rolled body, a high-quality ring rolled body is produced. The present invention relates to a method of cooing a main roll 1 for ring rolling in a state in which one side, in the rotation axis direction, of the main roll 1 faces upward, and relates to a method of manufacturing a ring rolled body, including the cooling method. In the cooling method, the shaft 11 is cooled by injecting a liquid W into a receiving part 13, 17 which is recessed from an upper end surface 12c of a die 12 of the main roll 1 facing the one side in the rotation axis direction and surrounds the shaft 11 of the main roll 1.
    Type: Application
    Filed: March 28, 2018
    Publication date: February 27, 2020
    Inventors: Takuya MURAI, Takanori MATSUI, Tomoyoshi KIWAKE
  • Patent number: 8211360
    Abstract: A Ni-based heat resistant alloy for a gas turbine combustor, comprising a composition containing, in mass %, Cr: 14.0 to 21.5%, Co: 6.5 to 14.5%, Mo: 6.5 to 10.0%, W: 1.5 to 3.5%, Al: 1.2 to 2.4%, Ti: 1.1 to 2.1%; Fe: 7.0% or less, B: 0.001 to 0.020%, C: 0.03 to 0.15%, and a balance consisting of Ni and unavoidable impurities, wherein a content of S and P contained in the unavoidable impurities is controlled to be, in mass %, S: 0.015% or less, and P: 0.015% or less, wherein the alloy has a texture in which M6C type carbide and MC type carbide are uniformly dispersed in ? phase matrix.
    Type: Grant
    Filed: April 13, 2007
    Date of Patent: July 3, 2012
    Assignees: Mitsubishi Materials Corporation, Mitsubishi Heavy Industries, Ltd
    Inventors: Takanori Matsui, Komei Kato, Takuya Murai, Yoshitaka Uemura, Daisuke Yoshida, Ikuo Okada
  • Patent number: 8187531
    Abstract: A wire for welding Ni-based heat resistant alloy, comprising: a composition containing, in mass %, Cr: 14.0 to 21.5%, Co: 6.5 to 14.5%, Mo: 6.5 to 10.0%, W: 1.5 to 3.5%, Al: 1.2 to 2.4%, Ti: 1.1 to 2.1%; Fe: 7.0% or less, B: 0.0001 to 0.020%, C: 0.03 to 0.15%, and a balance of Ni and unavoidable impurities, wherein a content of S and P contained in the unavoidable impurities is controlled to be, in mass %, S: 0.004% or less, and P: 0.010% or less, wherein the wire has a texture in which M6C type carbide and MC type carbide are uniformly dispersed in the matrix.
    Type: Grant
    Filed: April 16, 2007
    Date of Patent: May 29, 2012
    Assignees: Mitsubishi Materials Corporation, Mitsubishi Heavy Industries, Ltd.
    Inventors: Takanori Matsui, Komei Kato, Takuya Murai, Yoshitaka Uemura, Daisuke Yoshida, Ikuo Okada
  • Publication number: 20110171378
    Abstract: A method for producing covered particles, comprising: a mixing step of mixing a fluid containing particles comprising at least one type of substance selected from among metals, metal oxides and ceramics, a silsesquioxane having a functional group with an affinity for carbon dioxide, and supercritical carbon dioxide; and a covering step of reducing pressure of the fluid to gasify the supercritical carbon dioxide, while adhering the silsesquioxane onto the particles, and thereby obtaining covered particles comprising the particles and silsesquioxane covering the particles.
    Type: Application
    Filed: January 6, 2011
    Publication date: July 14, 2011
    Applicants: TDK Corporation, National University Corporation Shizuoka University
    Inventors: Raitaro Masaoka, Takashi Ota, Hisayuki Abe, Takeshi Sako, Chang Yi Kong, Idzumi Okajima, Takuya Murai
  • Publication number: 20090136382
    Abstract: A Ni-based heat resistant alloy for a gas turbine combustor, comprising a composition containing, in mass %, Cr: 14.0 to 21.5%, Co: 6.5 to 14.5%, Mo: 6.5 to 10.0%, W: 1.5 to 3.5%, Al: 1.2 to 2.4%, Ti: 1.1 to 2.1%; Fe: 7.0% or less, B: 0.001 to 0.020%, C: 0.03 to 0.15%, and a balance consisting of Ni and unavoidable impurities, wherein a content of S and P contained in the unavoidable impurities is controlled to be, in mass %, S: 0.015% or less, and P: 0.015% or less, wherein the alloy has a texture in which M6C type carbide and MC type carbide are uniformly dispersed in ? phase matrix.
    Type: Application
    Filed: April 13, 2007
    Publication date: May 28, 2009
    Applicants: Mitsubishi Materials Corporation, Mitsubishi Heavy Industries, Ltd.
    Inventors: Takanori Matsui, Komei Kato, Takuya Murai, Yoshitaka Uemura, Daisuke Yoshida, Ikuo Okada
  • Publication number: 20090123328
    Abstract: A wire for welding Ni-based heat resistant alloy, comprising: a composition containing, in mass %, Cr: 14.0 to 21.5%, Co: 6.5 to 14.5%, Mo: 6.5 to 10.0%, W: 1.5 to 3.5%, Al: 1.2 to 2.4%, Ti: 1.1 to 2.1%; Fe: 7.0% or less, B: 0.0001 to 0.020%, C: 0.03 to 0.15%, and a balance of Ni and unavoidable impurities, wherein a content of S and P contained in the unavoidable impurities is controlled to be, in mass %, S: 0.004% or less, and P: 0.010% or less, wherein the wire has a texture in which M6C type carbide and MC type carbide are uniformly dispersed in the matrix.
    Type: Application
    Filed: April 16, 2007
    Publication date: May 14, 2009
    Applicants: Mitsubishi Materials Corporation, Mitsubishi Heavy Industries , Ltd.
    Inventors: Takanori Matsui, Komei Kato, Takuya Murai, Yoshitaka Uemura, Daisuke Yoshida, Ikuo Okada
  • Publication number: 20020159559
    Abstract: The present invention provides a fuel cladding pipe made of Zr alloy for nuclear reactor having a high degree of strength and possessing superior resistance to corrosion. The fuel cladding pipe of the present invention is formed of a Zr alloy containing Nb in the range of 1.35˜2.15% by weight, with the remainder comprising Zr and inevitable impurities, or is formed of a Zr alloy containing Nb in the range of 0.4˜2.15% and Cr in the range of 0.01˜0.7%, with the remainder comprising Zr and inevitable impurities.
    Type: Application
    Filed: January 4, 2002
    Publication date: October 31, 2002
    Inventors: Takeshi Isobe, Takuya Murai
  • Publication number: 20010007638
    Abstract: Disclosed is a hydrogen occluding alloy used for a cathode of battery which enables to provide for a high discharge capacity at small number of charge/discharge cycles by a high-rate initial activation treatment and to increase a high-rate discharge capacity at low temperature.
    Type: Application
    Filed: December 14, 2000
    Publication date: July 12, 2001
    Applicant: MITSUBISHI MATERIALS CORPORATION
    Inventors: Koichi Kita, Masahiro Wada, Katsuo Sugahara, Takeshi Isobe, Takuya Murai
  • Patent number: 6083327
    Abstract: A Ni based hydrogen occluding alloy having the composition, comprising: by weight:(i) 32-38% of at least one of La or Ce,(ii) 0.1-17% Co,(iii) 0.1-3.5% Al,(iv) 0.5-10% Mn,(v) 0.005-0.1% of hydrogen, withthe balance being Ni and unavoidable impurities, wherein said alloy has a microstructure of a phase having a Ce.sub.2 Ni.sub.7 -type crystal structure and rare earth element hydride dispersively distributed in a matrix having a CaCu.sub.5 -type crystal structure and, wherein the amount of said phase having a Ce.sub.2 Ni.sub.7 -type crystal structure is 1-40% by area and the amount of said rare earth element hydride is 0.5-20% by area.
    Type: Grant
    Filed: June 16, 1999
    Date of Patent: July 4, 2000
    Assignee: Mitsubishi Materials Corporation
    Inventors: Kouichi Kita, Katsuo Sugahara, Masahiro Wada, Takuya Murai, Takeshi Isobe