Patents by Inventor Takuya Matsumoto
Takuya Matsumoto 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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Patent number: 12249355Abstract: The present disclosure generally relates to a magnetic recording head for a magnetic media drive. The magnetic recording head comprises a main pole, a waveguide disposed adjacent to the main pole, a thermal shunt disposed between the main pole and the waveguide, the thermal shunt being recessed from a media facing surface (MFS), and a near field transducer (NFT) coupled between the main pole and the waveguide at the MFS. The NFT comprises a first metal layer disposed adjacent to the waveguide and in contact with a first insulating layer, a dielectric gap layer disposed on and in contact with the first metal layer, and a second metal layer disposed on and in contact with the dielectric gap layer and a second insulating layer. The first metal layer, the dielectric gap layer, and the second metal layer are each disposed in contact with the thermal shunt.Type: GrantFiled: August 31, 2023Date of Patent: March 11, 2025Assignee: Western Digital Technologies, Inc.Inventor: Takuya Matsumoto
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Publication number: 20250078863Abstract: The present disclosure generally relates to a magnetic recording head for a magnetic media drive. The magnetic recording head comprises a main pole, a waveguide disposed adjacent to the main pole, a thermal shunt disposed between the main pole and the waveguide, the thermal shunt being recessed from a media facing surface (MFS), and a near field transducer (NFT) coupled between the main pole and the waveguide at the MFS. The NFT comprises a first metal layer disposed adjacent to the waveguide and in contact with a first insulating layer, a dielectric gap layer disposed on and in contact with the first metal layer, and a second metal layer disposed on and in contact with the dielectric gap layer and a second insulating layer. The first metal layer, the dielectric gap layer, and the second metal layer are each disposed in contact with the thermal shunt.Type: ApplicationFiled: August 31, 2023Publication date: March 6, 2025Applicant: Western Digital Technologies, Inc.Inventor: Takuya MATSUMOTO
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Patent number: 12230296Abstract: A magnetic recording/reproducing device includes a magnetic recording medium, a plurality of assisted magnetic recording heads, and a processor configured to write data onto the magnetic recording medium according to a first type of magnetic recording or a second type of magnetic recording and select one of the assisted magnetic recording heads for recording based on at least one of assist power and application time of the assist power when assisted magnetic recording is performed.Type: GrantFiled: September 5, 2023Date of Patent: February 18, 2025Assignees: Kabushiki Kaisha Toshiba, Toshiba Electronic Devices & Storage CorporationInventor: Takuya Matsumoto
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Patent number: 12218560Abstract: An electric power unit includes: a rotary electric machine unit an electrical unit disposed above the rotary electric machine unit; and a cooling unit. The electrical unit includes a protrusion protruding outward from a left end portion of the rotary electric machine housing portion of the rotary electric machine in a left-right direction. The cooling unit includes: a cooling fan configured to generate cooling air by rotating integrally with a rotary shaft of the rotary electric machine; and an air guide unit configured to guide the cooling air. The air guide unit includes cooling air flow paths provided between the cooling fan and the electrical unit. The closer to the protrusion of the electrical unit a cooling air flow path is disposed, the larger opening area of the introduction port the cooling air flow path has.Type: GrantFiled: March 10, 2022Date of Patent: February 4, 2025Assignee: HONDA MOTOR CO., LTD.Inventors: Takuya Matsumoto, Yuko Nishi, Naoki Matsunaga
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Publication number: 20240402789Abstract: A semiconductor device is formed by first and second dies manufactured by processes with different wiring widths and includes: a first switch, outputting an input power voltage when set to ON, and stopping output when set to OFF; and a second switch, outputting, from a second voltage output terminal, the power voltage output to a second voltage input terminal when set to ON and stopping output when set OFF; and at least one retention flip-flop, provided with: a first power terminal, connected with the second voltage output terminal; and a second power terminal, connected with the first voltage output terminal, and maintaining data when the power voltage is supplied to the second power terminal and supply of the power voltage to the first power terminal is cut off. The first switch is formed in a first die, and the second switch and retention flip-flop are formed in a second die.Type: ApplicationFiled: May 29, 2024Publication date: December 5, 2024Applicant: LAPIS Technology Co., Ltd.Inventor: Takuya MATSUMOTO
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Patent number: 12148555Abstract: This non-oriented electrical steel sheet includes a base metal having a predetermined chemical composition satisfying the expression [Si+sol. Al+0.5×Mn?4.3], and an average grain size of the base metal is more than 40 ?m and 120 ?m or less.Type: GrantFiled: November 1, 2019Date of Patent: November 19, 2024Assignee: NIPPON STEEL CORPORATIONInventors: Hiroyoshi Yashiki, Yoshiaki Natori, Miho Tomita, Kazutoshi Takeda, Takuya Matsumoto
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Patent number: 12148458Abstract: Spot size converter (SSC) in a HAMR magnetic recording head assembly have a plurality of split assist core structures. Each split assist core structure includes multiple assist cores and a main waveguide. Each split core may also include one or more side waveguides such that the main waveguide is sandwiched between the side waveguides and top and bottom assist cores. Adjacent split assist core structures, may share assist cores. The split assist core structures reduce light source power utilized to write data to magnetic media.Type: GrantFiled: July 18, 2023Date of Patent: November 19, 2024Assignee: Western Digital Technologies, Inc.Inventors: Norman Nan Shi, Takuya Matsumoto, Barry C. Stipe
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Publication number: 20240347248Abstract: A superconducting magnet device includes a magnet device body including a superconducting magnet, a magnet support, a refrigerator, a refrigerator support, and a coupling member. The magnet support supports the magnet device body such that the magnet device body is disposed above an installation surface. The refrigerator support supports the refrigerator from below such that the refrigerator is disposed above the installation surface. The coupling member couples the refrigerator support and the magnet support at a position above the installation surface.Type: ApplicationFiled: April 4, 2024Publication date: October 17, 2024Applicant: JAPAN SUPERCONDUCTOR TECHNOLOGY INC.Inventors: Takuya MATSUMOTO, Hideaki NAGAHAMA, Satoshi ITO
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Patent number: 12119032Abstract: The present disclosure generally relates to a magnetic recording head for a magnetic media drive. The magnetic recording head comprises a main pole, a waveguide disposed adjacent to the main pole, a near field transducer (NFT) coupled between the main pole and the waveguide at a media facing surface (MFS), a thermal shunt disposed on the NFT, the thermal shunt being recessed from the MFS, and a stable material disposed on the NFT at the MFS. In some embodiments, the stable material is wedge-shaped or triangular-shaped. In another embodiment, the stable material comprises a first portion and a second portion, where the first and second portions may each by linear, or where the first portion is triangular-shaped and the second portion is square-shaped. The stable material may be in contact with the thermal shunt, or spaced from the thermal shunt.Type: GrantFiled: August 3, 2023Date of Patent: October 15, 2024Assignee: Western Digital Technologies, Inc.Inventors: Takuya Matsumoto, Hamid Balamane
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Publication number: 20240317376Abstract: An outboard motor, comprises a housing main body (34) configured to be attached to a hull (14) of watercraft so as to be tilted upward, a propulsion device (32) attached to a lower part of the housing main body, a lower case (35) provided on an upper part of the housing main body, an upper cover (36) fixed to the lower case and defining a motor chamber jointly with the lower case, a motor (22) received in the motor chamber and configured to drive the propulsion device, and an outer shell (38) at least partly covering the upper cover, wherein the upper cover is provided with a grip portion (72) for the outboard motor, and the outer shell is provided with an opening (86) that permits access to the grip portion.Type: ApplicationFiled: March 24, 2023Publication date: September 26, 2024Inventors: Takuya MATSUMOTO, Ryohei MATSUOKA
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Publication number: 20240321293Abstract: A magnetic recording/reproducing device includes a magnetic recording medium, a plurality of assisted magnetic recording heads, and a processor configured to write data onto the magnetic recording medium according to a first type of magnetic recording or a second type of magnetic recording and select one of the assisted magnetic recording heads for recording based on at least one of assist power and application time of the assist power when assisted magnetic recording is performed.Type: ApplicationFiled: September 5, 2023Publication date: September 26, 2024Inventor: Takuya MATSUMOTO
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Publication number: 20240321312Abstract: A magnetic recording and reproducing device includes a magnetic recording medium having a lubricant on a surface of the magnetic recording medium, a heat-assisted magnetic recording head configured to perform magnetic recording on the magnetic recording medium, a humidity sensor, and a write procedure control circuit configured to control a write procedure of the heat-assisted magnetic recording head in accordance with a measurement result of the humidity sensor.Type: ApplicationFiled: September 1, 2023Publication date: September 26, 2024Inventors: Kaori KIMURA, Takuya MATSUMOTO
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Publication number: 20240270020Abstract: In a radial tire for aircraft according to this disclosure, in a tire widthwise cross-sectional view, in a reference state assembled onto an applicable rim, charged with a prescribed internal pressure, and unloaded, a rim width RW of the applicable rim and a tire maximum width W satisfy RW/W?0.7, and in the tire widthwise cross-sectional view, in the reference state, a tread width TW and the tire maximum width W satisfy 0.73<TW/W<0.8.Type: ApplicationFiled: November 17, 2021Publication date: August 15, 2024Applicant: BRIDGESTONE CORPORATIONInventors: Shogo WADA, Takuya MATSUMOTO, Kazutaka JINNO
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Publication number: 20240263618Abstract: The electric power generating device includes a first generator, a differential gear mechanism provided between a blade and the first generator, a first ring gear connected to the first generator, and a case that rotates integrally with the first ring gear about a first axis. The differential gear mechanism includes a pinion shaft that rotatably supports a pair of pinion gears about a second axis perpendicular to the first axis. The differential gear mechanism includes a first drive shaft having a first side gear at one end and a blade connected to the other end. The differential gear mechanism comprises a second drive shaft having a second side gear at one end and having an interference portion at one end extending toward the pinion shaft. The interference portion faces the pinion shaft in a direction of a third axis that is orthogonal to the first axis and the second axis.Type: ApplicationFiled: December 29, 2023Publication date: August 8, 2024Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Takuya MATSUMOTO
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Patent number: 12057149Abstract: A heat-assisted magnetic recording (HAMR) head has a slider with a gas-bearing-surface (GBS). The slider supports a near-field transducer (NFT) with an output tip at the GBS and a main magnetic pole with a pole tip at the GBS. The pole tip has a narrow cross-track width that can be substantially the same as the cross-track width of the NFT output tip. A plasmonic layer is located between the main pole and the NFT and has a tip at the GBS between the main pole tip and the NFT output tip. The plasmonic layer may also be located on the cross-track sides of the main pole and the main pole tip.Type: GrantFiled: May 23, 2023Date of Patent: August 6, 2024Assignee: Western Digital Technologies, Inc.Inventor: Takuya Matsumoto
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Publication number: 20240240857Abstract: A drying device configured to dry a resin film including a solvent, the drying device may include: a housing; a partition disposed in the housing and partitioning a space in the housing into a first space and a second space; a conveyor configured to convey the resin film in the first space; a first heater disposed in the second space and configured to radiate electromagnetic waves to the resin film being conveyed by the conveyor; and a window disposed in the partition and configured to allow the electromagnetic waves radiated from the first heater to penetrate therethrough. The first heater may be configured to radiate electromagnetic waves in a wavelength band below 4.0 ?m to the resin film and to absorb electromagnetic waves in a wavelength band of at least 4.0 ?m or more.Type: ApplicationFiled: January 11, 2024Publication date: July 18, 2024Applicant: NGK INSULATORS, LTD.Inventors: Takuya MATSUMOTO, Takeshi KOMAKI
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Publication number: 20240240858Abstract: A drying device may include: a body defining a drying space therein; a heater disposed in the drying space to face a surface of the film moving in the drying space, including an inner tube and an outer tube, and configured to radiate electromagnetic waves through the outer tube, wherein a surface temperature of the outer tube is maintained at 200 degrees or less; and a reflector at least partially covering the heater and configured to reflect at least a part of the electromagnetic waves radiated from the outer tube of the heater toward the film moving in the drying space. The heater may be configured to radiate electromagnetic waves in a wavelength band below a predetermined wavelength to the film and is configured to absorb electromagnetic waves in a wavelength band equal to or above the predetermined wavelength.Type: ApplicationFiled: January 11, 2024Publication date: July 18, 2024Applicant: NGK INSULATORS, LTD.Inventors: Takuya MATSUMOTO, Michirou AOKI
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Patent number: 12039064Abstract: An information processing device 10 includes: a database 12 that stores contents created by an administrator terminal 13; and a control device 11 that stores the contents and the administrator terminal 13 that are associated with each other as association information, and executes setting an access right to the contents on the basis of this association information.Type: GrantFiled: June 4, 2019Date of Patent: July 16, 2024Assignee: DIGITAL ARTS INC.Inventors: Toshio Dogu, Takuya Matsumoto, Kiyoto Inomata
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Publication number: 20240233757Abstract: A heat assisted magnetic recording (HAMR) write head contains a main pole, a waveguide, and a near-field transducer containing an antenna disposed between the waveguide and the main pole. A first portion of the antenna includes a layer stack of three or more gold-based component layers that contain a waveguide-side outermost gold-based component layer, a pole-side outermost gold-based component layer, and one or more intermediate gold-based component layers. An intermediate gold-based component layer of the one or more intermediate gold-based component layers includes at least one platinum group metal (PGM) at a maximum total atomic percentage that is greater than a total atomic percentage of the at least one PGM in the waveguide-side outermost gold-based component layer and is greater than a total atomic percentage of the at least one PGM in the pole-side outermost gold-based component layer.Type: ApplicationFiled: August 15, 2023Publication date: July 11, 2024Inventors: Sung Hun Wee, Shawn Tanner, Hamid Balamane, Pradeep Senanayake, Takuya Matsumoto
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Patent number: 12002495Abstract: According to one embodiment, a magnetic disk device includes magnetic disks, a plurality of magnetic heads, and a control unit. A plurality of magnetic heads each includes a heat-assist unit which applies a preheating current of such magnitude that data already written to the magnetic disk is not erased to a near-field optical element for the preheat time. The control unit measures the time elapsing from a start of write to the time when a value of an index indicating the quality of a recording signal of data written by the magnetic head converges to within a first threshold range, and adjusts the preheat time for each of the magnetic heads in such a manner that the measured lapse time becomes less than or equal to a second threshold.Type: GrantFiled: March 9, 2023Date of Patent: June 4, 2024Assignees: Kabushiki Kaisha Toshiba, Toshiba Electronic Devices & Storage CorporationInventors: Hiroshi Isokawa, Takuya Matsumoto