Patents Assigned to Furukawa Electric Co.
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Publication number: 20250091264Abstract: The present invention intends to estimate the orientation of a resin while suppressing anisotropy. The resin composition for injection molding according to the present invention including a first thermoplastic resin and a filler including a non-fibrous first inorganic particle, further including at least one of an aggregate of second inorganic particles and a resin composition of a second thermoplastic resin. A ratio of a longest first length to a shortest second length among lengths of the aggregate and the resin composition in three directions orthogonal to each other is larger than or equal to 2 and smaller than or equal to 20, and the first length is larger than or equal to 25 ?m and smaller than or equal to 100 ?m. The aggregate or the resin composition does not include the first inorganic particles having a particle diameter of larger than or equal to 25 ?m.Type: ApplicationFiled: November 27, 2024Publication date: March 20, 2025Applicant: FURUKAWA ELECTRIC CO., LTD.Inventors: Takahiro MIURA, Takanori YAMAZAKI, Masahiro HANDA, Masayoshi TSUKAMOTO
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Publication number: 20250092280Abstract: A resin composition, containing: a component (A) being a base resin containing an ethylene-?-olefin random copolymer including an ?-olefin component having 4 to 12 carbon atoms; a component (B) being a wet dispersant; a component (C) being an antioxidant; and a component (D) being a crosslinking aid, wherein the ethylene-?-olefin random copolymer including the ?-olefin component having 4 to 12 carbon atoms has a crystallinity of 15 to 24%, and wherein a content of the component (B) is 2 to 10 parts by mass with respect to 100 parts by mass of a content of the component (A).Type: ApplicationFiled: December 5, 2024Publication date: March 20, 2025Applicants: FURUKAWA ELECTRIC CO., LTD., FURUKAWA AUTOMOTIVE SYSTEMS INC.Inventors: Kenji TAKAHASHI, Michimasa WATANABE, Minoru ASANO, Akihiro NAGAO, Hideyuki OSUGA
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Compound superconducting twisted wire and rewinding method for compound superconducting twisted wire
Patent number: 12255000Abstract: A compound superconducting twisted wire includes compound superconducting strands being twisted to form a twisted structure, in which each of the compound superconducting strands includes a compound superconductor part, a reinforcing part and a stabilizing part. The compound superconductor part includes compound superconducting filaments and a first matrix, the compound superconducting filaments each including a compound superconducting phase. The reinforcing part is disposed on an outer circumferential side of the compound superconductor part and includes reinforcing filaments and a second matrix. The stabilizing part is disposed on at least one side of an inner circumferential side and an outer circumferential side of the reinforcing part. A volume ratio of the reinforcing part relative to the compound superconducting strand is larger than a volume ratio of the compound superconductor part relative to the compound superconducting strand.Type: GrantFiled: September 20, 2019Date of Patent: March 18, 2025Assignees: FURUKAWA ELECTRIC CO., LTD., TOHOKU UNIVERSITY, TOKAI UNIVERSITY EDUCATIONAL SYSTEMInventors: Masahiro Sugimoto, Hirokazu Tsubouchi, Daisuke Asami, Hideki Ii, Satoshi Awaji, Hidetoshi Oguro -
Publication number: 20250089217Abstract: The heat sink including a base plate and a plurality of plate-like radiating fins, wherein the plate-like radiating fins have a fin base portion that extends from one end to another end of the plate-like radiating fin, and a twisted portion that is provided in a height direction of the plate-like radiating fin from the fin base portion, and inclines in a main front surface direction of the base plate, and the twisted portion has a planar region defined by a twist start portion that linearly stretches from the fin base portion, one end portion that is at least a part of the one end facing the twist start portion and inclines at an angle ?1, and a fin tip portion that is at least a part of a fin tip facing the fin base portion, and inclines at an angle ?2 with respect to the fin base portion.Type: ApplicationFiled: November 22, 2024Publication date: March 13, 2025Applicant: FURUKAWA ELECTRIC CO., LTD.Inventor: Yosuke WATANABE
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Patent number: 12248171Abstract: A multi-core optical amplifying fiber includes: core portions doped with a rare-earth element; an inner cladding portion; and an outer cladding portion. A mode field diameter of each core portion at a wavelength at which the rare-earth element performs optical amplification is 5 ?m to 11 ?m, a relative refractive-index difference of the maximum refractive index of each core portion with respect to the inner cladding portion is 0.35% to 2%, a core-to-core distance is set such that total inter-core crosstalk is ?40 dB/100 m or lower in an optical amplification wavelength band subjected to the optical amplification, a cladding thickness is smaller than a value obtained by adding the mode field diameter to a minimum value of the core-to-core distance, and a ratio of a total sectional area of the core portions to a sectional area of the inner cladding portion is 1.9% or more.Type: GrantFiled: September 13, 2022Date of Patent: March 11, 2025Assignee: FURUKAWA ELECTRIC CO., LTD.Inventors: Shigehiro Takasaka, Koichi Maeda, Ryuichi Sugizaki
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Patent number: 12249832Abstract: A power converter includes: an input unit configured to be electrically connected to a device; a voltage charge unit configured to change voltage; a voltage adjustment unit configured to adjust the voltage supplied to a transmission line; a target setting unit configured to set a first target value of the voltage change unit; a voltage monitoring unit configured to observe the voltage of the transmission line; and a threshold determination mechanism configured to calculate a second target value of the voltage adjustment unit in accordance with voltage of the transmission line. The target setting unit of the power converter is configured to generate the first target value as an output target of the voltage charge unit in accordance with the voltage observed by the voltage monitoring unit. The first target value has characteristics to change a threshold voltage for controlling output of the voltage adjustment unit depending on time.Type: GrantFiled: January 20, 2023Date of Patent: March 11, 2025Assignee: FURUKAWA ELECTRIC CO., LTD.Inventors: Masahiro Rikiso, Asuka Abe
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Publication number: 20250079782Abstract: A cable connector assembly includes a cable connector, a first flat cable, and a second flat cable. The first flat cable includes a first conductor exposure portion. The second flat cable includes a second conductor exposure portion. The cable connector includes a restriction portion contactable with the first flat cable to restrict the first conductor exposure portion from moving toward the second conductor exposure portion in a first direction.Type: ApplicationFiled: November 18, 2024Publication date: March 6, 2025Applicants: FURUKAWA ELECTRIC CO., LTD., FURUKAWA AUTOMOTIVE SYSTEMS INC.Inventors: Tomohiro KITAMURA, Yuya HASEGAWA
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Patent number: 12243570Abstract: An aluminum alloy substrate for a magnetic disc is made of an aluminum alloy, containing Fe: 1.80 mass % or less, Mn: 0.70 mass % or less, Ni: 2.50 mass % or less, Si: 2.50 mass % or less, Cu: 1.00 mass % or less, Zn: 0.48 mass % or less and Mg: 1.00 to 3.50 mass %, wherein a total content of Fe, Mn and Ni is 1.60 to 4.50 mass % and a mass ratio of Cu/Zn is 0.01 to 0.35 or 6.00 to 50.00, with a balance being Al and inevitable impurities.Type: GrantFiled: June 14, 2023Date of Patent: March 4, 2025Assignee: Furukawa Electric Co., Ltd.Inventors: Kotaro Kitawaki, Hideyuki Hatakeyama, Wataru Kumagai, Ryo Sakamoto
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Patent number: 12230957Abstract: An electric power network includes: a plurality of power routers each including a plurality of power ports; a plurality of interconnection lines configured to connect the power routers in a grid manner via the power ports; and an electric power apparatus configured to consume or supply electric power, the electric power apparatus being connected to a power port that is included in at least one of the power routers and that is not connected to any of the interconnection lines. At least one of the power ports of each of the power routers is set as a dependent port for which characteristics of direct-current power to be input or output are not controlled.Type: GrantFiled: May 31, 2022Date of Patent: February 18, 2025Assignee: FURUKAWA ELECTRIC CO., LTD.Inventors: Masahiro Rikiso, Sumio Kachi, Hideto Nakamura, Kengo Nakao
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Patent number: 12221018Abstract: Provided is a cable take-up device for a flexible flat cable routed for a slide seat slidably supported so as to be movable forward and backward along a fixed rail fixed to the vehicle cabin floor. The cable take-up device includes: a take-up housing part that takes up a housed portion in a drawable manner and houses it inside with a front end portion fixed to a rail front end portion and a rear end portion fixed to the slide seat; a take-up force generation part that generates a take-up force in a direction of take-up of the housed portion through drawing of the cable routing body; and a slit that applies the take-up force of the take-up force generation part to the housed portion.Type: GrantFiled: September 19, 2022Date of Patent: February 11, 2025Assignees: FURUKAWA ELECTRIC CO., LTD., FURUKAWA AUTOMOTIVE SYSTEMS INC.Inventor: Masahiro Okumura
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Patent number: 12222547Abstract: A coating removal device removing a coating of an optical fiber along an axial direction of the optical fiber includes a heating portion including a cutting blade making a cut in the coating of the optical fiber, and a heater heating a part of the coating that is closer to a tip thereof than the cutting blade; a main body portion including a control board electrically connected with the heater; a holding portion holding the optical fiber, the holding portion being provided on the opposite side to the heater with the cutting blade being located between the holding portion and the heater; and a slide mechanism allowing the holding portion to slidably move with respect to the heating portion such that the holding portion is distanced away from the heating portion in the axial direction.Type: GrantFiled: July 28, 2021Date of Patent: February 11, 2025Assignees: FURUKAWA ELECTRIC CO., LTD, Furukawa FITEL (Thailand) Co., Ltd.Inventors: Tomohiro Akiyama, Boonsin Thanatummatis, Sarawut Polsen, Jakkapat Wattanarat, Nuttawut Budsayaplakorn
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Patent number: 12222541Abstract: An optical fiber bundle structure includes: plural optical fiber core wires; a crossing preventing member; and a grasping member. Further, the crossing preventing member has slits and the widths of the slits positioned at the respective sides are each equal to or larger than a difference between: a length of one side of a polygon circumscribing the plural optical fiber core wires at a hindmost end portion of the slits at the trailing end; and a length of one side of a polygon circumscribing the plural optical fiber core wires at the leading end.Type: GrantFiled: January 11, 2024Date of Patent: February 11, 2025Assignee: FURUKAWA ELECTRIC CO., LTD.Inventors: Kohei Kawasaki, Ryuichi Sugizaki, Masayoshi Tsukamoto, Masanori Takahashi, Shigehiro Takasaka, Koichi Maeda
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Patent number: 12208467Abstract: A welding method includes: disposing a workpiece formed by stacking a plurality of metal foils in an area to be irradiated with laser light that contains a plurality of beams; irradiating a surface of the workpiece with the beams of the laser light by dispersing positions of the beams such that centers of the beams do not overlap with each other within a prescribed area on the surface; melting an irradiated part of the workpiece and performing welding; and setting each of the beams to have a power density with which no hole opens in the metal foils, and setting the power density of the beams and dispersing irradiating positions to be emitted so as to form a weld pool penetrating the workpiece by the beams.Type: GrantFiled: December 8, 2020Date of Patent: January 28, 2025Assignee: FURUKAWA ELECTRIC CO., LTD.Inventors: Ryosuke Nishii, Kousuke Kashiwagi, Takashi Kayahara, Tomomichi Yasuoka, Takashi Shigematsu
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Patent number: 12208375Abstract: A functional structure which can resist a decrease in the function of the functional material and thus have a long life, can be free from the need for complicated replacement operation, can contribute to resource-saving, and can exhibit high catalytic activity when used, for example, as a catalyst. The functional structure includes supports each having porous structure and including a zeolite-type compound, and at least one functional substance present in the supports, in which each of the supports has channels communicating with one another, the functional material is present at least in the channel of each of the supports, and the supports have an average external size of 20 ?m or less.Type: GrantFiled: December 3, 2019Date of Patent: January 28, 2025Assignees: NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITY, FURUKAWA ELECTRIC CO., LTD.Inventors: Mai Nishii, Yuichiro Banba, Kaori Sekine, Yukako Nakai, Masayuki Fukushima, Sadahiro Kato, Takao Masuda, Yuta Nakasaka, Takuya Yoshikawa
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Patent number: 12211642Abstract: The superconducting coil includes: a winding frame; and at least two superconducting rectangular wire layers provided in such a manner that a superconducting rectangular wire is spirally wound on an outer surface of the frame such that wires adjacent to each other in an axial direction of the frame are arranged side by side and separated, the wire including an NbTi-based or Nb3Sn-based wire having a surface coated with copper or copper alloy, in which at least a thermoplastic fusible resin is provided in a separated section between the adjacent wires, and when viewed in a cross section including an axis of the frame, at least one of voids that are partitionable on outer surfaces of a total of three wires and a total of four wires located on the two adjacent layers and adjacent to each other are 4% or less in terms of a void ratio (V1).Type: GrantFiled: November 18, 2020Date of Patent: January 28, 2025Assignee: FURUKAWA ELECTRIC CO., LTD.Inventors: Yonghoon Kim, Hideki Ii, Takumi Sato, Daisuke Asami, Masahiro Sugimoto, Hirokazu Tsubouchi
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Patent number: 12204141Abstract: An optical fiber bundle structure includes: plural optical fiber core wires; a crossing preventing member; and a grasping member. Further, the crossing preventing member has slits and the widths of the slits positioned at the respective sides are each equal to or larger than a difference between: a length of one side of a polygon circumscribing the plural optical fiber core wires at a hindmost end portion of the slits at the trailing end; and a length of one side of a polygon circumscribing the plural optical fiber core wires at the leading end.Type: GrantFiled: January 11, 2024Date of Patent: January 21, 2025Assignee: FURUKAWA ELECTRIC CO., LTD.Inventors: Kohei Kawasaki, Ryuichi Sugizaki, Masayoshi Tsukamoto, Masanori Takahashi, Shigehiro Takasaka, Koichi Maeda
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Patent number: 12205616Abstract: A magnetic disk device includes a plurality of disk-shaped magnetic disks, a spacer, a hub, and a clamp. Each of the magnetic disks includes a through-hole in a center section thereof. The spacer is disposed among the magnetic disks, and includes a through-hole in a center section thereof. The hub is inserted into the through-holes of the magnetic disks and the spacers. The clamp presses and holds the magnetic disks and the spacer. At surfaces where the magnetic disks and the spacer or the clamp contact, a flat surface height of an upper surface of at least one magnetic disk that contacts an outer circumference of the spacer or the clamp is lower than a flat surface height of the upper surface of at least one magnetic disk of the magnetic disks that contacts an inner circumference of the spacer or the clamp.Type: GrantFiled: February 14, 2022Date of Patent: January 21, 2025Assignees: UACJ CORPORATION, FURUKAWA ELECTRIC CO., LTD.Inventors: Kotaro Kitawaki, Ryohei Yamada, Shinpei Todo, Hideyuki Hatakeyama
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Publication number: 20250024645Abstract: Provided is a heat sink that can prevent dryout without impairing heat transfer characteristics even when an environmental temperature at the time of use is lower than a melting point of a working fluid. The heat sink includes a heat transport member including a heat receiving part thermally connected to a heat generating body, and a first heat radiating fin group in which a plurality of first heat radiating fins are arranged, the first heat radiating fin group being thermally connected to the heat transport member at a heat radiating part, the heat transport member has an inner space that communicates from the heat receiving part to the heat radiating part and in which a working fluid is sealed, and a heat transfer member is thermally connected to a heat insulating part located between the heat receiving part and the heat radiating part of the heat transport member.Type: ApplicationFiled: September 27, 2024Publication date: January 16, 2025Applicant: FURUKAWA ELECTRIC CO., LTD.Inventors: Hirofumi AOKI, Kenya KAWABATA
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Publication number: 20250023316Abstract: A Raman amplifier includes: a Raman amplification optical fiber configured to Raman amplify incoherent light in which relative intensity noise (RIN) is suppressed while transmitting the incoherent light; and a pumping light source configured to supply pumping light to the Raman amplification optical fiber. A corner frequency fc [Hz] at which the suppression of the RIN starts in the Raman-amplified incoherent light is estimated by using the following Equation (1): fc = 1 / ( D · ?? · L ) ( 1 ) in which a full width at half maximum of a wavelength spectrum of the incoherent light is ?? [nm], a length of the Raman amplification optical fiber is L [km], and a chromatic dispersion of the Raman amplification optical fiber at a center wavelength of the incoherent light is D [ps/nm/km].Type: ApplicationFiled: September 27, 2024Publication date: January 16, 2025Applicant: FURUKAWA ELECTRIC CO., LTD.Inventors: Haruki OGOSHI, Junji YOSHIDA, Yusuke INABA, Seiji ICHINO, Yasuto TATAMIDA, Shigehiro TAKASAKA, Ryuichi SUGIZAKI, Nitidet THUDSALINGKARNSAKUL, Sanguan ANANTATHANASARN, Supadda PHOKEAW
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Publication number: 20250020885Abstract: An optical fiber ribbon includes a plurality of optical fibers and a ribbon layer covering the plurality of optical fibers. A Young's modulus of the ribbon layer is larger than or equal to 290 MPa and smaller than or equal to 1400 MPa. A static frictional coefficient between a plurality of the optical fiber ribbons is larger than or equal to 0.71 and smaller than or equal to 1.12.Type: ApplicationFiled: July 12, 2023Publication date: January 16, 2025Applicant: Furukawa Electric Co., Ltd.Inventors: Kuniaki ISHIZUKI, Mitsuhiro IWAYA, Minoru KASAHARA