Patents by Inventor Hiroshi Matsuda

Hiroshi Matsuda 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: 11348619
    Abstract: A hard disk drive (HDD) includes an enclosure base, a first cover coupled to the base, and two separate gasket seals composed of different materials and configured to seal the interface between the first cover and the base. One gasket seal is composed of a material having a low permeability to helium or another lighter-than-air gas contained within the HDD, and the other gasket seal is composed of material having a low water vapor or moisture transmission. By using two separate independent gaskets which have different attributes, helium concentration is kept high and humidity is kept low during manufacturing testing, prior to affixing a hermetic second cover over the first cover, and degradation of HDD performance due to change of flying height is ultimately avoided.
    Type: Grant
    Filed: February 16, 2021
    Date of Patent: May 31, 2022
    Assignee: Western Digital Technologies, Inc.
    Inventors: Yuichi Arai, Miki Namihisa, Hiroshi Matsuda, Takashi Tomita
  • Publication number: 20220162259
    Abstract: A peptide complex including: a peptide; and a cell-membrane-permeability-imparting group introduced into the peptide, wherein the cell-membrane-permeability-imparting group includes a dendritic structure including four or more branches, and at least four branches of the four or more branches include basic functional groups at ends thereof.
    Type: Application
    Filed: February 14, 2020
    Publication date: May 26, 2022
    Applicant: KANEKA CORPORATION
    Inventors: Keishi TAKATSU, Toshihiro SHIKAKURA, Yuka MATSUDA, Tatsuya MOUTAI, Hirofumi MAEDA, Hiroshi KITA, Mitsuaki KITANO
  • Patent number: 11343752
    Abstract: This first communication apparatus is provided with: a first communication unit which, after establishing a link necessary for first near field communication with a communication counterpart existing within a first communication available range, performs the first near field communication with the link-established communication counterpart; and a second communication unit which performs second near field communication with a communication counterpart existing within a second communication available range that is narrower than the first communication available range. In a case where detecting that a portable storage medium with which the second near field communication is available enters the second communication available range, the first communication apparatus transmits, through the first communication unit, detection information which indicates that the portable storage medium enters the second communication available range to a link-established second communication apparatus.
    Type: Grant
    Filed: August 30, 2017
    Date of Patent: May 24, 2022
    Assignee: Rakuten Group, Inc.
    Inventors: Hiroshi Shinohara, Yoshiro Matsuda
  • Patent number: 11333436
    Abstract: A heat exchanger is configured to exchange heat between a heat medium and an air. The heat exchanger includes a tube through which the heat medium flows therein, and a fin that is formed by bending a metal plate and that is brazed to a surface of the tube. The fin includes a louver. The surface of the tube defines an introducing groove configured to introduce a brazing material melted at brazing from a connecting portion between the tube and the fin to an other portion.
    Type: Grant
    Filed: July 15, 2020
    Date of Patent: May 17, 2022
    Assignee: DENSO CORPORATION
    Inventors: Hiroshi Hamada, Tomohiko Nakamura, Yuta Matsuda
  • Publication number: 20220137468
    Abstract: A liquid crystal display device includes a first substrate, a second substrate and liquid crystal. The first substrate includes pixel electrodes, a peripheral circuit and a dummy wiring. The peripheral circuit and the dummy wiring are provided outside a pixel area in which the pixel electrodes are arranged. The second substrate is opposed to the first substrate through the liquid crystal. The second substrate includes a translucent conductive film that is provided on an opposite side of the second substrate to a side where the liquid crystal is present. The dummy wiring is located on an outer peripheral side of the substrates than the peripheral circuit and is provided independently of the peripheral circuit in terms of circuit. The dummy wiring is grounded outside the first substrate.
    Type: Application
    Filed: January 19, 2022
    Publication date: May 5, 2022
    Inventors: Yasuo Segawa, Masaaki Aota, Tomohide Onogi, Hiroshi Matsuda
  • Patent number: 11298773
    Abstract: Provided is a resistance spot welding method. The resistance spot welding method for joining a sheet set including a plurality of lapped steel sheets includes: holding the sheet set between a pair of electrodes; and energizing the sheet set under application of electrode force to thereby join the steel sheets together. At least one of the plurality of lapped steel sheets is a surface-treated steel sheet including a metal coating layer on a surface thereof. The energizing includes: a primary energizing step of performing energization to form a nugget portion; a non-energizing step in which, after the primary energizing step, the energization is suspended for an energization suspension time Tc (cycles); and a secondary energizing step of, after the non-energizing step, performing energization for reheating while the nugget portion is prevented from growing. During the energizing, the relations of a particular formula are satisfied.
    Type: Grant
    Filed: March 1, 2018
    Date of Patent: April 12, 2022
    Assignee: JFE Steel Corporation
    Inventors: Koichi Taniguchi, Chikaumi Sawanishi, Katsutoshi Takashima, Hiroshi Matsuda, Rinsei Ikeda
  • Publication number: 20220080460
    Abstract: An ultrasonic sensor includes: a first substrate including an ultrasonic element; a first electrode and a second electrode on the first substrate; a second substrate having a through-hole that penetrates from a first surface facing the first substrate to a second surface; and a gap material that separates the first substrate and the second substrate from each other, in which in a plan view from a +Z direction, the through-hole overlaps with the first electrode and the second electrode, and the gap material surrounds the through-hole, the through-hole has a narrow portion, and a width of the narrow portion is smaller than a width of the through-hole in the first surface, in a direction orthogonal to the +Z direction.
    Type: Application
    Filed: September 8, 2021
    Publication date: March 17, 2022
    Inventors: Hiroshi MATSUDA, Kanechika KIYOSE
  • Patent number: 11256151
    Abstract: A liquid crystal display device includes a first substrate, a second substrate and liquid crystal. The first substrate includes pixel electrodes, a peripheral circuit and a dummy wiring. The peripheral circuit and the dummy wiring are provided outside a pixel area in which the pixel electrodes are arranged. The second substrate is opposed to the first substrate through the liquid crystal. The second substrate includes a translucent conductive film that is provided on an opposite side of the second substrate to a side where the liquid crystal is present. The dummy wiring is located on an outer peripheral side of the substrates than the peripheral circuit and is provided independently of the peripheral circuit in terms of circuit. The dummy wiring is grounded outside the first substrate.
    Type: Grant
    Filed: May 21, 2018
    Date of Patent: February 22, 2022
    Assignee: Japan Display Inc.
    Inventors: Yasuo Segawa, Masaaki Aota, Tomohide Onogi, Hiroshi Matsuda
  • Publication number: 20220049330
    Abstract: A spot welded member includes a spot weld formed by holding a sheet stack of multiple steel sheets between a pair of electrodes and spot-welding the sheet stack, in which at least one of the multiple steel sheets is a high-strength zinc-based coated steel sheet having a tensile strength of 780 MPa or more, the high-strength zinc-based coated steel sheet having a coating with an Al content of 0.5% or more by mass, and in which the heat shock region of the spot weld outwardly extending from an edge of a corona bond area includes a coated layer including an FeAl alloy layer having an average thickness of 0.3 ?m or more and a zinc-based coated layer having an average thickness of 2.0 ?m or more on the FeAl alloy layer at the interface between the base steel sheet of the high-strength zinc-based coated steel sheet and the coating.
    Type: Application
    Filed: December 19, 2019
    Publication date: February 17, 2022
    Applicant: JFE Steel Corporation
    Inventors: Minoru Tanaka, Koichi Taniguchi, Rinta Sato, Katsutoshi Takashima, Hiroshi Matsuda, Rinsei Ikeda
  • Publication number: 20220020399
    Abstract: A hard disk drive (HDD) includes an enclosure base, a first cover coupled to the base, and two separate gasket seals composed of different materials and configured to seal the interface between the first cover and the base. One gasket seal is composed of a material having a low permeability to helium or another lighter-than-air gas contained within the HDD, and the other gasket seal is composed of material having a low water vapor or moisture transmission. By using two separate independent gaskets which have different attributes, helium concentration is kept high and humidity is kept low during manufacturing testing, prior to affixing a hermetic second cover over the first cover, and degradation of HDD performance due to change of flying height is ultimately avoided.
    Type: Application
    Filed: February 16, 2021
    Publication date: January 20, 2022
    Inventors: Yuichi Arai, Miki Namihisa, Hiroshi Matsuda, Takashi Tomita
  • Patent number: 11198917
    Abstract: Provided is a method for nitriding a grain-oriented electrical steel sheet which is very useful in obtaining excellent magnetic properties with no variation, that enables generating glow discharge between positive electrodes and negative electrodes disposed in a nitriding zone and irradiating the generated plasma to a strip to perform appropriate nitriding.
    Type: Grant
    Filed: December 17, 2018
    Date of Patent: December 14, 2021
    Assignee: JFE STEEL CORPORATION
    Inventors: Hiroshi Matsuda, Hideyuki Takahashi, Hiroi Yamaguchi, Yasuyuki Hayakawa, Yukihiro Shingaki, Takashi Terashima
  • Publication number: 20210362266
    Abstract: The present invention provides a resistance spot welding method. A resistance spot welding method according to the present invention in which a sheet combination of two or more overlapping steel sheets is sandwiched between a pair of electrodes and joined together by applying current while applying pressure, the method including a main current application step in which current application is performed with a current Iw (kA), and subsequently, a post-tempering heat treatment step in which after cooling is performed for a cooling time tct (ms) shown in formula (1) below, current application is performed with a current It (kA) shown in formula (2) below for a current application time tt (ms) shown in formula (3) below: 800?tct . . . formula (1), 0.5×Iw?It?Iw . . . formula (2), and 500?tt . . . formula (3).
    Type: Application
    Filed: February 5, 2019
    Publication date: November 25, 2021
    Applicant: JFE Steel Corporation
    Inventors: Reiko Endo, Muneo Matsushita, Koichi Taniguchi, Hiroshi Matsuda, Rinsei Ikeda
  • Patent number: 11179748
    Abstract: A mounting structure includes a first substrate that has a first surface on which a functional element is provided, a wiring that is provided at a position which is different from a position of the functional element on the first surface, and is connected to the functional element, a second substrate that has a second surface facing the first surface, and a conductor that is provided on the second surface, and is connected to the wiring and the functional element, in which the shortest distance between the functional element and the second substrate is longer than a distance between a position where the wiring is connected to the conductor, and the second substrate.
    Type: Grant
    Filed: May 8, 2018
    Date of Patent: November 23, 2021
    Inventors: Koji Ohashi, Chikara Kojima, Hiroshi Matsuda, Hironori Suzuki, Shuichi Tanaka
  • Publication number: 20210335313
    Abstract: An electro-optical device is provided and includes first signal lines extending in first direction on substrate; second signal lines extending in second direction on substrate, second direction intersecting first direction; pixel area in which pixel electrodes are disposed; outer peripheral edge of pixel area having curved or bent portions; first and second circuit blocks arranged along curved or bent portions, each of first and second circuit blocks including at least two unit circuits, wherein second circuit block is arranged adjacent to first circuit block with gap therebetween in first direction, first circuit block has first upper part and first lower part that define width of first circuit block in second direction, second circuit block has second upper part and second lower part that define width of second circuit block in second direction, and first upper part is arranged between second upper part and second lower part in second direction.
    Type: Application
    Filed: July 9, 2021
    Publication date: October 28, 2021
    Inventors: Katsuya ANZAI, Hideki KAWADA, Hiroshi MATSUDA, Yukitada IWASAKI
  • Publication number: 20210332454
    Abstract: A high-strength steel sheet of the present invention has a specific chemical composition. Furthermore, in the steel sheet, a degree of Mn segregation in a specific region is 1.5 or less; a maximum P concentration in a specific region is 0.08 mass % or less; in a specific region, at least one specific MnS particle group is present, the number of specific MnS particle groups is 2.0 or fewer per 1 mm2, and the number of specific oxide-based inclusions is 8 or fewer per 1 mm2; of all oxide-based inclusions, oxide-based inclusions having a specific composition are present in a number ratio of 80% or greater; the microstructure includes, in terms of a volume fraction, 30 to 95% martensite, 5 to 70% ferrite phase, less than 30% (and 0% or greater) bainite, and less than 2.0% (and 0% or greater) austenite phase; and a tensile strength is 980 MPa or greater.
    Type: Application
    Filed: August 22, 2019
    Publication date: October 28, 2021
    Applicant: JFE Steel Corporation
    Inventors: Yoshihiko Ono, Yuma Honda, Shimpei Yoshioka, Koichi Taniguchi, Hiroshi Matsuda, Takeshi Murai, Nobuyuki Nakamura
  • Patent number: 11136644
    Abstract: A high-strength cold rolled steel sheet having a specified chemical composition and a method for producing the same. The steel sheet having a microstructure including, in terms of volume fraction, 35% or less of ferrite, 1% or more and 10% or less of retained austenite, 2% or more and 12% or less of as-quenched martensite, and a total of 25% to 70% of bainite and tempered martensite. The microstructure has an average crystal grain diameter of the ferrite: 5.0 ?m or less, an average crystal grain diameter of the retained austenite: 2.0 ?m or less, an average crystal grain diameter of the as-quenched martensite: 3.0 ?m or less, an average crystal grain diameter of the bainite and the tempered martensite phase: 4.0 ?m or less, and an average intergrain distance of the as-quenched martensite of 1.0 ?m or more.
    Type: Grant
    Filed: August 29, 2017
    Date of Patent: October 5, 2021
    Assignee: JFE STEEL CORPORATION
    Inventors: Yoshie Obata, Katsutoshi Takashima, Takashi Kobayashi, Hiroshi Matsuda
  • Patent number: 11136643
    Abstract: A high-strength steel sheet having a specified chemical composition and a method for producing the same. The steel sheet including a multi-phase structure including, by volume fraction, ferrite of 35% to 65%, residual austenite of 7% or less (including 0%), martensite of 20% to 60%, bainite of 20% or less (including 0%), the ferrite having an average crystal grain size of 8 ?m or less and an average aspect ratio of 3.5 or less, the martensite having an average crystal grain size of 3 ?m or less, and the bainite having an average crystal grain size of 3 ?m or less when contained. A standard deviation of Vickers hardness of the steel sheet being 30 or less when measured at 200 ?m intervals from a position of 100 ?m from a surface to a central portion in a thickness direction of the sheet.
    Type: Grant
    Filed: August 10, 2017
    Date of Patent: October 5, 2021
    Assignee: JFE STEEL CORPORATION
    Inventors: Katsutoshi Takashima, Koichi Taniguchi, Takashi Kobayashi, Hiroshi Matsuda, Rinsei Ikeda
  • Publication number: 20210300499
    Abstract: A bicycle control device includes an electronic controller that controls a motor to assist propulsion of a bicycle. The electronic controller is configured to decrease an output of the motor upon determining that a shifting device is performing a shifting action to change a transmission ratio of the bicycle. The electronic controller is further configured to end the control that decreases the output of the motor before a predetermined period elapses upon determining that the shifting action is completed or the transmission ratio is changed before the predetermined period has elapsed. The electronic controller is further configured to end the control that decreases the output of the motor upon determining that the predetermined period has elapsed in a case where the shifting action or the change in the transmission ratio is uncompleted even though the predetermined period has elapsed.
    Type: Application
    Filed: June 10, 2021
    Publication date: September 30, 2021
    Inventors: Yasuhiro TSUCHIZAWA, Hiroshi MATSUDA, Takuya KATSUKI
  • Publication number: 20210260685
    Abstract: A welding process used in a method of manufacturing a steel sheet assembly includes spot welding steel sheets performed for a heat time of 0.08 seconds or more using a convex electrode with a tip radius of curvature of 20 mm or more or a flat electrode such that the weld force F (kN) for initial 0.03 seconds of the heat time satisfies formula: F<0.00125×(1+0.75×tall)+3 where TS (MPa) denotes an average strength of the steel sheets and represents a weighted mean value of a thickness of each of the steel sheets, and tall (mm) denotes a total thickness of the steel sheets (the sum of the thicknesses of the steel sheets).
    Type: Application
    Filed: May 13, 2021
    Publication date: August 26, 2021
    Inventors: Hiroshi Matsuda, Yasuaki Okita, Muneo Matsushita, Rinsei Ikeda, Kenji Oi
  • Publication number: 20210260684
    Abstract: A resistance spot welding method comprises: performing test welding; and performing actual welding after the test welding, wherein in subsequent current passage in the test welding, current passage is performed by constant current control under a condition: 0.5?Vtp/Vtm?2.0 when tc<800 ms; 0.5?0.3×(tc?800)/800?Vtp/Vtm?2.0?0.5×(tc?800)/800 when 800 ms?tc<1600 ms; and 0.2?Vtp/Vtm?1.5 when tc?1600 ms, where Vtm is an average value of a voltage between the electrodes in main current passage in the test welding, and Vtp is an average value of a voltage between the electrodes in the subsequent current passage in the test welding, and wherein in main current passage in the actual welding, adaptive control welding is performed, and in subsequent current passage in the actual welding, current passage is performed by constant current control under a condition: 0.8×Itp?Imp?1.
    Type: Application
    Filed: June 17, 2019
    Publication date: August 26, 2021
    Applicant: JFE STEEL CORPORATION
    Inventors: Chikaumi SAWANISHI, Hiroshi MATSUDA, Rinsei IKEDA