Patents by Inventor Masahiro Tsukamoto

Masahiro Tsukamoto 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).

  • Publication number: 20240141090
    Abstract: An unsaturated polyester resin composition contains an unsaturated polyester, a vinyl ester, a polymerizable monomer, and an aluminum hydroxide. The vinyl ester is a reaction product of an epoxy resin and an unsaturated monobasic acid. The vinyl ester is blended in a predetermined ratio to the unsaturated polyester. The aluminum hydroxide is blended in a predetermined ratio to the vinyl ester.
    Type: Application
    Filed: November 9, 2020
    Publication date: May 2, 2024
    Inventors: Ikuo AKAI, Masahiro HAKOTANI, Takashi TSUKAMOTO
  • Publication number: 20240134130
    Abstract: A ferrule is formed with an optical fiber insertion hole into which an optical fiber is inserted, and includes a resin composition containing a thermoplastic resin and a filler, wherein a size of coarse particles originated from the filler is 50 ?m or less, or a size of aggregates originated from the filler is 50 ?m or less.
    Type: Application
    Filed: December 13, 2023
    Publication date: April 25, 2024
    Applicant: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Masayoshi TSUKAMOTO, Takahiro MIURA, Masahiro HANDA
  • Patent number: 11962192
    Abstract: An electric motor includes: a permanent magnet; a rotor including a first rotor core having a first electrical steel sheet and a second rotor core having a second electrical steel sheet; and a stator including a stator core. The first electrical steel sheet is located outside the stator core. A relationship among a minimum width BL1 of a first left bridge, a thickness tL1 of the first left bridge, a minimum width BR1 of a first right bridge, a thickness tR1 of the first right bridge, a minimum width BL2 of a second left bridge, a thickness tL2 of the second left bridge, a minimum width BR2 of a second right bridge, and a thickness tR2 of the second right bridge satisfies (BL1×tL1+BR1×tR1)>(BL2×tL2+BR2×tR2).
    Type: Grant
    Filed: July 30, 2019
    Date of Patent: April 16, 2024
    Assignee: Mitsubishi Electric Corporation
    Inventors: Emi Tsukamoto, Masahiro Nigo
  • Patent number: 11949291
    Abstract: A motor includes a stator core having an annular shape about an axis, a coil wound on the stator core, and a rotor core disposed on an inner side of the stator core in a radial direction about the axis. The rotor core has a stacked body in which a plurality of steel laminations are stacked in a direction of the axis, and a magnet insertion hole famed in the stacked body. The rotor core has a length in the direction of the axis longer than that of the stator core. A magnet is inserted in the magnet insertion hole. The rotor core has a first region where the magnet is inserted in the magnet insertion hole and a second region where the magnet is not inserted in the magnet insertion hole, in the direction of the axis. At least one steel lamination in the second region of the rotor core has an opening area smaller than an opening area of each steel lamination in the first region of the rotor core.
    Type: Grant
    Filed: February 22, 2019
    Date of Patent: April 2, 2024
    Assignee: Mitsubishi Electric Corporation
    Inventors: Emi Tsukamoto, Masahiro Nigo
  • Patent number: 11865637
    Abstract: A laser machining device includes a plurality of optical fibers and a collimator lens arranged in parallel along a supply nozzle for supplying a molten material, and a laser beam projected from the optical fiber is applied onto an axis between a tip of the supply nozzle and a build-up welding spot.
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: January 9, 2024
    Assignees: MURATANI MACHINE INC., ISHIKAWA PREFECTURE, OSAKA UNIVERSITY
    Inventors: Sotohiro Muratani, Masahiro Tsukamoto, Yoshinori Funada, Yorihiro Yamashita
  • Publication number: 20230050577
    Abstract: A laser welding method is usable to weld a material containing copper as a main component. The laser welding method includes heating the material by irradiation with a first laser light and welding the material by irradiation of a portion, which has been irradiated with the first laser light, of the material with a second laser light with which an energy absorption rate of the copper contained in the material increases by an increase in a temperature of the material. A wavelength of the first laser light is 400 nm to 470 nm.
    Type: Application
    Filed: October 28, 2022
    Publication date: February 16, 2023
    Inventors: Masatoshi ITOU, Takashi NISHIKAWA, Masahiro TSUKAMOTO, Yuji SATO, Tetsuo SUGA
  • Patent number: 11567272
    Abstract: This optical coupling device couples a plurality of beams to a single fiber. A plurality of light sources is arranged at predetermined intervals and emits the plurality of beams. A plurality of collimating lens is arranged to face the plurality of light sources and collimates the plurality of beams emitted from the plurality of light sources. A reduction optical system reduces the beam diameter of the plurality of beams collimated by the plurality of collimating lens. A focusing lens focuses the plurality of beams reduced by the reduction optical system on a fiber. A first distance between the light source and the collimating lens arranged so as to correspond to a beam passing through the center of the reduction optical system is different from a second distance between the light source and the collimating lens arranged so as to correspond to a beam passing through the end portion of the reduction optical system.
    Type: Grant
    Filed: August 23, 2018
    Date of Patent: January 31, 2023
    Assignees: Shimadzu Corporation, Osaka University
    Inventors: Naoki Wakabayashi, Koji Tojo, Masahiro Tsukamoto
  • Publication number: 20220297230
    Abstract: A laser apparatus includes six first laser devices that output respective blue laser beams for preliminary heating of an object, and a second laser device that outputs an infrared laser beam for main heating of the object. At least one of a relative positional relationship and each of respective first irradiation positions of the blue laser beams is changeable, the relative positional relationship being a relative positional relationship between the respective first irradiation positions of the six first laser beams in the object and a second irradiation position of the infrared laser beam in the object.
    Type: Application
    Filed: March 14, 2022
    Publication date: September 22, 2022
    Inventors: Masahiro TSUKAMOTO, Yuji SATO, Keisuke TAKENAKA, Ritsuko HIGASHINO, Koji TOJO
  • Publication number: 20220142875
    Abstract: The present invention provides a dental glass ionomer cement composition which can improve the mixing efficiency of a powder and a liquid to an extent where their powder to liquid ratio can be raised in mechanical mixing without reducing a fluoride-release property, and further expresses a high mechanical property. More specifically, the present invention provides a dental glass ionomer cement composition in which a powder and a liquid are separately packaged in a dental capsule, and the powder and the liquid are used by mixing immediately before their use, wherein the composition comprises (a) a hydrophobized acid reactive glass powder, (b) a polyalkene acid, and (c) water, and is not accompanied by a polymerization reaction upon setting.
    Type: Application
    Filed: November 5, 2021
    Publication date: May 12, 2022
    Applicant: KABUSHIKI KAISHA SHOFU
    Inventors: Masahiro TSUKAMOTO, Shuji SAKAMOTO, Katsuya KIMOTO
  • Publication number: 20210247573
    Abstract: This optical coupling device couples a plurality of beams to a single fiber. A plurality of light sources is arranged at predetermined intervals and emits the plurality of beams. A plurality of collimating lens is arranged to face the plurality of light sources and collimates the plurality of beams emitted from the plurality of light sources. A reduction optical system reduces the beam diameter of the plurality of beams collimated by the plurality of collimating lens. A focusing lens focuses the plurality of beams reduced by the reduction optical system on a fiber. A first distance between the light source and the collimating lens arranged so as to correspond to a beam passing through the center of the reduction optical system is different from a second distance between the light source and the collimating lens arranged so as to correspond to a beam passing through the end portion of the reduction optical system.
    Type: Application
    Filed: August 23, 2018
    Publication date: August 12, 2021
    Inventors: Naoki WAKABAYASHI, Koji TOJO, Masahiro TSUKAMOTO
  • Patent number: 10695862
    Abstract: A laser processing apparatus for processing a plate-shaped workpiece by applying a laser beam to the workpiece, includes a cassette table for placing thereon a cassette in which a plurality of workpieces are accommodated, a carrying-out unit for carrying out the workpiece from the cassette placed on the cassette table, and a laser beam applying unit including a focusing unit for applying the laser beam to the workpiece held on the chuck table. The carrying-out unit carries out the workpiece having been processed by the laser beam applying unit from the chuck table, and accommodates the workpiece into the cassette placed on the cassette table.
    Type: Grant
    Filed: December 12, 2017
    Date of Patent: June 30, 2020
    Assignee: DISCO CORPORATION
    Inventors: Hiroshi Nomura, Masahiro Tsukamoto
  • Patent number: 10629462
    Abstract: A wafer processing system includes a laser processing apparatus, a grinding apparatus, a tape sticking apparatus, a first cassette placement part, a second cassette placement part, a conveying unit that conveys a wafer, and a controller that controls the respective constituent elements. The controller includes a first processing program instructing section that conveys a wafer unloaded from a first cassette in order of the laser processing apparatus, the grinding apparatus, the tape sticking apparatus, and a second cassette and sequentially carries out processing by each apparatus for the one wafer, and a second processing program instructing section that conveys the wafer unloaded from the first cassette in order of the grinding apparatus, the laser processing apparatus, the tape sticking apparatus, and the second cassette and sequentially carries out processing by each apparatus for the one wafer.
    Type: Grant
    Filed: June 8, 2017
    Date of Patent: April 21, 2020
    Assignee: DISCO CORPORATION
    Inventors: Ken Togashi, Masahiro Tsukamoto
  • Publication number: 20190111517
    Abstract: A laser machining device includes a plurality of optical fibers and a collimator lens arranged in parallel along a supply nozzle for supplying a molten material, and a laser beam projected from the optical fiber is applied onto an axis between a tip of the supply nozzle and a build-up welding spot.
    Type: Application
    Filed: March 30, 2017
    Publication date: April 18, 2019
    Inventors: Sotohiro MURATANI, Masahiro TSUKAMOTO, Yoshinori FUNADA, Yorihiro YAMASHITA
  • Patent number: 10242904
    Abstract: A frame unit is transferred from a cassette to a predetermined position. The frame unit has a platelike workpiece, a tape attached to the workpiece, and a ring frame supporting a peripheral portion of the tape. The apparatus includes a holding unit for the frame unit, a moving unit for the holding unit, and a control unit. The holding unit includes a pair of gripping portions for gripping a front portion of the ring frame at two separate positions, and an abutting portion adapted to abut against the outer circumference of the ring frame. The ring frame is gripped, partially drawn from the cassette, and released. The abutting portion is brought into abutment against the outer circumference of the ring frame so as to move the ring frame into the cassette. The ring frame is gripped again, raised, and transferred to the predetermined position.
    Type: Grant
    Filed: October 25, 2017
    Date of Patent: March 26, 2019
    Assignee: Disco Corporation
    Inventors: Masahiro Tsukamoto, Ken Togashi
  • Patent number: 10107232
    Abstract: A method for driving an internal combustion engine is a method for reducing nitrogen oxides in emissions of the internal combustion engine, and includes a process of introducing air, which has a low oxygen concentration and contains no emissions, into the internal combustion engine, and a process of mixing humidifying water with a hydrocarbon fuel and injecting the mixture into a combustion chamber of the internal combustion engine as an emulsion fuel.
    Type: Grant
    Filed: September 26, 2013
    Date of Patent: October 23, 2018
    Assignee: Asahi Kasei Chemicals Corporation
    Inventors: Atsushi Shimizu, Hirokazu Ohno, Tomohiro Niihama, Masahiro Tsukamoto
  • Patent number: 10094951
    Abstract: Apparatus determines whether a stored object is a wafer alone or a frame unit formed by uniting the wafer and a ring frame. The apparatus includes first and second detecting units, the second detecting unit being stored more shallowly than the first detecting unit. The apparatus determines whether light transmitted by the first detecting unit is blocked by the object and does not reach a light receiving portion of the first detecting unit. When light transmitted from the second detecting unit is blocked by the object and does not reach a light receiving portion of the second detecting unit, the apparatus determines that the object is the frame unit, whereas when the light transmitted from the second detecting unit is not blocked by the object and reaches the light receiving portion of the second detecting unit, the apparatus determines that the object is the wafer.
    Type: Grant
    Filed: August 1, 2017
    Date of Patent: October 9, 2018
    Assignee: DISCO CORPORATION
    Inventors: Ken Togashi, Masahiro Tsukamoto
  • Publication number: 20180161920
    Abstract: Disclosed herein is a laser processing apparatus for processing a plate-shaped workpiece by applying a laser beam to the workpiece. The laser processing apparatus includes a cassette table for placing thereon a cassette in which a plurality of workpieces are accommodated, a carrying-out unit for carrying out the workpiece from the cassette placed on the cassette table, and a laser beam applying unit including a focusing unit for applying the laser beam to the workpiece held on the chuck table. The carrying-out unit carries out the workpiece having been processed by the laser beam applying unit from the chuck table, and accommodates the workpiece into the cassette placed on the cassette table.
    Type: Application
    Filed: December 12, 2017
    Publication date: June 14, 2018
    Inventors: Hiroshi Nomura, Masahiro Tsukamoto
  • Publication number: 20180130688
    Abstract: A frame unit is transferred from a cassette to a predetermined position. The frame unit has a platelike workpiece, a tape attached to the workpiece, and a ring frame supporting a peripheral portion of the tape. The apparatus includes a holding unit for the frame unit, a moving unit for the holding unit, and a control unit. The holding unit includes a pair of gripping portions for gripping a front portion of the ring frame at two separate positions, and an abutting portion adapted to abut against the outer circumference of the ring frame. The ring frame is gripped, partially drawn from the cassette, and released. The abutting portion is brought into abutment against the outer circumference of the ring frame so as to move the ring frame into the cassette. The ring frame is gripped again, raised, and transferred to the predetermined position.
    Type: Application
    Filed: October 25, 2017
    Publication date: May 10, 2018
    Inventors: Masahiro Tsukamoto, Ken Togashi
  • Patent number: 9931902
    Abstract: A stabilizer bushing has a holding hole for holding a stabilizer bar and is to be mounted on a mounting surface of a vehicle-body-side component. A normal line to the mounting surface extends in a direction intersecting an up and down direction of a vehicle. The stabilizer bushing has at least one separation surface, one end portion of which is located on an inner circumferential surface opposed to the holding hole, and the other end portion of which is located on an outer surface of the stabilizer bushing at a position different from a rigid-component opposed portion opposed to the vehicle-body-side component. The at least one separation surface has a first separation surface located nearer to the rigid-component opposed portion than a plane extending through a central axis of the holding hole and parallel with the rigid-component opposed portion.
    Type: Grant
    Filed: March 8, 2016
    Date of Patent: April 3, 2018
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Masahiro Tsukamoto, Satoshi Uchida
  • Publication number: 20180045851
    Abstract: Apparatus determines whether a stored object is a wafer alone or a frame unit formed by uniting the wafer and a ring frame. The apparatus includes first and second detecting units, the second detecting unit being stored more shallowly than the first detecting unit. The apparatus determines whether light transmitted by the first detecting unit is blocked by the object and does not reach a light receiving portion of the first detecting unit. When light transmitted from the second detecting unit is blocked by the object and does not reach a light receiving portion of the second detecting unit, the apparatus determines that the object is the frame unit, whereas when the light transmitted from the second detecting unit is not blocked by the object and reaches the light receiving portion of the second detecting unit, the apparatus determines that the object is the wafer.
    Type: Application
    Filed: August 1, 2017
    Publication date: February 15, 2018
    Inventors: Ken Togashi, Masahiro Tsukamoto