Patents by Inventor Hiroaki Ota

Hiroaki Ota 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: 11912489
    Abstract: A plurality of heat dissipation substrates stacked on each other, intermediate sheets disposed under a lowermost heat dissipation substrate, on an uppermost heat dissipation substrate, and between heat dissipation substrates adjacent to each other, a drying agent disposed over or under the plurality of heat dissipation substrates, and a bag that seals the plurality of heat dissipation substrates, the plurality of intermediate sheets, and the drying agent.
    Type: Grant
    Filed: November 6, 2019
    Date of Patent: February 27, 2024
    Assignee: DENKA COMPANY LIMITED
    Inventors: Hiroaki Ota, Yosuke Ishihara, Daisuke Goto
  • Patent number: 11831100
    Abstract: The terminal structure includes an electric wire including a core wire and a terminal member attached to the electric wire. The terminal member includes a joining portion to which the core wire is joined and the sealing portion surrounding the joining portion and including an opening portion having the joining portion exposed therethrough. The core wire is joined to the joining portion through the opening portion and is in close contact with the sealing portion annularly around the opening portion.
    Type: Grant
    Filed: February 25, 2022
    Date of Patent: November 28, 2023
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Hiroaki Ota, Yasunori Mukumoto, Masataka Ohashi, Kotaro Tagami
  • Publication number: 20230303461
    Abstract: A molded article having a small difference in thermal conductivities between a central section and a section located at an outer peripheral surface side; and a method for producing the same; wherein, a plate-shaped molded article includes an aluminum-silicon carbide composited section in which a metal including aluminum was impregnated into a silicon carbide porous body, wherein a difference in the densities, by Archimedes’ principle, of a central section of the aluminum-silicon carbide composited section and of at least a portion of an outer side section located further toward the outside peripheral surface side than the central section is 3% or less.
    Type: Application
    Filed: February 16, 2022
    Publication date: September 28, 2023
    Applicant: DENKA COMPANY LIMITED
    Inventors: Daisuke GOTO, Hiroaki OTA
  • Patent number: 11763960
    Abstract: A wire harness includes a first electric wire member including a first flexible wire and a hard wire electrically connected to the first flexible wire, a second electric wire member including a second flexible wire, and a tubular member through which the first and second electric wire members extend. The wire harness also includes a tubular holder that is attached to a longitudinal end portion of the tubular member and holds the first and second electric wire members therein. The holder has a first housing recess that is located in an inner surface of the holder and houses the second electric wire member.
    Type: Grant
    Filed: February 25, 2022
    Date of Patent: September 19, 2023
    Assignees: SUMITOMO WIRING SYSTEMS, LTD., HONDA MOTOR CO., LTD.
    Inventors: Takuji Iwama, Kotaro Tagami, Hiroaki Ota, Masataka Ohashi
  • Publication number: 20230187982
    Abstract: A power transmitting apparatus included in a contactless power feeding apparatus includes a power supply circuit that supplies AC power having a predetermined drive frequency to a transmission coil for supplying power to a power receiving apparatus, a power receiving circuit that receives returning power transmitted from the power receiving apparatus, a control circuit that controls, according to a voltage of the returning power, the power supply circuit such that an output voltage of the power receiving apparatus is in a predetermined allowable range. Also, the power receiving apparatus includes a resonant circuit for receiving power via the transmission coil of the power transmitting apparatus, a rectifier circuit that rectifies power received via the resonant circuit, and a power transmitting circuit that transmits the returning power according to a voltage of power output from the rectifier circuit to the power transmitting apparatus.
    Type: Application
    Filed: November 21, 2022
    Publication date: June 15, 2023
    Applicant: OMRON Corporation
    Inventors: Goro NAKAO, Hiroaki OTA, Ken ONOZAKA, Yuki ITO, Taichi MISHIMA, Yusuke KAWAI
  • Publication number: 20230187983
    Abstract: A power transmitting apparatus included in the contactless power feeding apparatus includes a power supply circuit that supplies AC power having a predetermined drive frequency to a transmission coil for supplying power to a power receiving apparatus, a first coil and a first capacitor that are connected between the power supply circuit and the transmission coil, a second capacitor that is connected at first end to the first capacitor and is connected at a second end to the second end of the transmission coil, and a control circuit. Also, the power receiving apparatus includes a receiver coil for receiving power, and a resonant circuit that includes a resonance capacitor that resonates together with the receiver coil. Also, the control circuit of the power transmitting apparatus controls the power supply circuit such that the predetermined drive frequency falls within a predetermined frequency range including a resonance frequency of the resonant circuit.
    Type: Application
    Filed: November 22, 2022
    Publication date: June 15, 2023
    Applicant: OMRON Corporation
    Inventors: Goro NAKAO, Hiroaki OTA, Yuki ITO, Kenichi TABATA, Atsushi NOMURA, Daiki ANDO, Ken ONOZAKA, Yusuke KAWAI, Mitsunori SUGIURA
  • Publication number: 20230156966
    Abstract: An element-mounted board includes a heat-dissipating plate in which aluminum or magnesium-containing metal layers are formed on both front and back surfaces of a flat plate-shaped metal-silicon carbide complex including aluminum or magnesium, and an electronic element including a ceramic plate, which is mounted on one surface side of the heat-dissipating plate, in which a flatness of the other surface of the heat-dissipating plate is 600 ?m or less.
    Type: Application
    Filed: March 11, 2021
    Publication date: May 18, 2023
    Applicant: DENKA COMPANY LIMITED
    Inventors: Daisuke GOTO, Hiroaki OTA
  • Publication number: 20230042932
    Abstract: A ceramic circuit board includes a ceramic base material, a metal layer (first metal layer), and a marker portion. The marker portion is formed on the surface of the first metal layer. The surface of the metal layer (first metal layer) may be plated. When the surface of the metal layer (first metal layer) is plated, the marker portion may be formed on the plating.
    Type: Application
    Filed: March 25, 2021
    Publication date: February 9, 2023
    Applicant: DENKA COMPANY LIMITED
    Inventors: Daisuke GOTO, Hiroaki OTA
  • Publication number: 20220369499
    Abstract: Among two main surfaces of a heat dissipation member, one main surface is curved to be convex in an outward direction and the other convex in an inward direction. When a straight line passing through both endpoints P1 and P2 of the curve is l1, a point at which a distance to l1 on the curve is maximum is Pmax, an intersection point between l1 and a perpendicular drawn from Pmax to l1 is P3, a middle point of a line segment P1P3 is P4, an intersection point between the curve and a straight line that passes through P4 and is perpendicular to l1 is Pmid, a length of the line segment P1P3 is L, a length of a line segment P3Pmax is H, and a length of a line segment P4Pmax is h, (2 h/L)/(H/L) is 1.1 or more.
    Type: Application
    Filed: January 29, 2020
    Publication date: November 17, 2022
    Applicant: DENKA COMPANY LIMITED
    Inventors: Daisuke GOTO, Hiroaki OTA
  • Publication number: 20220320791
    Abstract: The terminal structure includes an electric wire including a core wire and a terminal member attached to the electric wire. The terminal member includes a joining portion to which the core wire is joined and the sealing portion surrounding the joining portion and including an opening portion having the joining portion exposed therethrough. The core wire is joined to the joining portion through the opening portion and is in close contact with the sealing portion annularly around the opening portion.
    Type: Application
    Filed: February 25, 2022
    Publication date: October 6, 2022
    Inventors: Hiroaki OTA, Yasunori MUKUMOTO, Masataka OHASHI, Kotaro TAGAMI
  • Publication number: 20220285045
    Abstract: A wire harness includes a first electric wire member including a first flexible wire and a hard wire electrically connected to the first flexible wire, a second electric wire member including a second flexible wire, and a tubular member through which the first and second electric wire members extend. The wire harness also includes a tubular holder that is attached to a longitudinal end portion of the tubular member and holds the first and second electric wire members therein. The holder has a first housing recess that is located in an inner surface of the holder and houses the second electric wire member.
    Type: Application
    Filed: February 25, 2022
    Publication date: September 8, 2022
    Applicants: SUMITOMO WIRING SYSTEMS, LTD., HONDA MOTOR CO., LTD.
    Inventors: Takuji IWAMA, Kotaro TAGAMI, Hiroaki OTA, Masataka OHASHI
  • Publication number: 20220142337
    Abstract: The backpack encompasses a box-shaped storage-compartment having first and second main surfaces opposite to each other and a triple-sided surface whereby triple continuous sides of the first main surface and triple sides of the second main surface opposite thereto are connected to each other, and a back plate encompassing a joint plane opposite to the first main surface and a backrest plane opposite to the joint plane. A convex element is disposed on one of the first main surface or the joint plane, and an insertion hole with a structure matching the convex element is disposed on a position on the other of the first main surface or the joint plane corresponding to the convex element. The storage-compartment and the back plate can be freely attached to and detached from each other by placing the convex element into the insertion hole and separating the convex element from the insertion hole.
    Type: Application
    Filed: January 22, 2022
    Publication date: May 12, 2022
    Inventor: Hiroaki OTA
  • Publication number: 20220104400
    Abstract: A plate-shaped heat dissipation member includes a metal-silicon carbide composite containing aluminum or magnesium, in which at least one of two main surfaces of the heat dissipation member is curved to be convex in an outward direction of the heat dissipation member, and when a flatness of the one main surface defined by JIS B 0621 is represented by f1 and a flatness of the other main surface different from the one main surface defined by JIS B 0621 is represented by f2, f2 is less than f1 by 10 ?m or more.
    Type: Application
    Filed: January 29, 2020
    Publication date: March 31, 2022
    Applicant: DENKA COMPANY LIMITED
    Inventors: Daisuke GOTO, Hiroaki OTA
  • Publication number: 20220017282
    Abstract: A plurality of heat dissipation substrates stacked on each other, intermediate sheets disposed under a lowermost heat dissipation substrate, on an uppermost heat dissipation substrate, and between heat dissipation substrates adjacent to each other, a drying agent disposed over or under the plurality of heat dissipation substrates, and a bag that seals the plurality of heat dissipation substrates, the plurality of intermediate sheets, and the drying agent.
    Type: Application
    Filed: November 6, 2019
    Publication date: January 20, 2022
    Applicant: DENKA COMPANY LIMITED
    Inventors: Hiroaki OTA, Yosuke ISHIHARA, Daisuke GOTO
  • Publication number: 20210269697
    Abstract: A metal-silicon carbide-based composite material including: a composite part including a silicon carbide-based porous body constituted by a plurality of silicon carbide particles, and a metal that is infiltrated in the silicon carbide-based porous body; and first and second surface layers which contain a metal, and coat both main surfaces of the composite part. The metal contains at least one kind selected from the group consisting of aluminum and magnesium, and the amount of particles having a particle size of 300 ?m or more in the plurality of silicon carbide particles is 5% by volume or less.
    Type: Application
    Filed: July 11, 2019
    Publication date: September 2, 2021
    Applicant: DENKA COMPANY LIMITED
    Inventors: Daisuke GOTO, Hiroaki OTA
  • Patent number: 10823042
    Abstract: An air blowing fan device includes an electric motor including a rotation shaft, and an air blowing fan including an attachment portion, a boss portion, and an outer circumferential side air blowing blades. The attachment portion is attached to the rotation shaft. The boss portion includes a tubular portion that is positioned radially outward of the attachment portion and of which the outer diameter dimension is larger than the outer diameter dimension of the electric motor, and a linkage portion. The electric motor is disposed in the tubular portion, the outer circumferential side air blowing blade extends radially outward from an outer circumferential surface of the tubular portion, the linkage portion includes a ventilation hole, and an area occupied by the electric motor and an area occupied by the outer circumferential side air blowing blade partially overlap each other in the direction in which the rotation shaft extends.
    Type: Grant
    Filed: November 15, 2018
    Date of Patent: November 3, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yoshifumi Nishio, Hiroaki Ota, Akifumi Fujimoto
  • Patent number: 10751912
    Abstract: The present invention provides an aluminum-diamond composite which combines high thermal conductivity and a coefficient of thermal expansion close to a semiconductor element, and in which the difference between the thicknesses of both surfaces is reduced so as to be suitable for use as a heat sink etc. for a semiconductor element.
    Type: Grant
    Filed: October 11, 2016
    Date of Patent: August 25, 2020
    Assignee: DENKA COMPANY LIMITED
    Inventors: Hiroaki Ota, Takeshi Miyakawa, Yosuke Ishihara
  • Patent number: 10541189
    Abstract: A sheet-shaped aluminum-diamond composite containing a prescribed amount of a diamond powder wherein a first and second peak in a volumetric distribution of particle sizes occurs at 5-25 ?m and 55-195 ?m, and a ratio between an area of a volumetric distribution of particle sizes of 1-35 ?m and 45-205 ?m is from 1:9 to 4:6, the composite including an aluminum-containing metal as the balance, wherein the composite is covered, on both main surfaces, with a surface layer having prescribed film thicknesses and containing 80 vol % or more of an aluminum-containing metal, two or more Ni-containing layers are formed on at least the surface layer, the Ni-containing layers being such that a first and second layer from the surface layer side are amorphous Ni alloy layers having prescribed thicknesses, and an Au layer having a prescribed thickness is formed as an outermost layer.
    Type: Grant
    Filed: November 24, 2017
    Date of Patent: January 21, 2020
    Assignee: DENKA COMPANY LIMITED
    Inventors: Yosuke Ishihara, Takeshi Miyakawa, Hiroaki Ota, Hideo Tsukamoto
  • Publication number: 20190341330
    Abstract: A sheet-shaped aluminum-diamond composite containing a prescribed amount of a diamond powder wherein a first and second peak in a volumetric distribution of particle sizes occurs at 5-25 ?m and 55-195 ?m, and a ratio between an area of a volumetric distribution of particle sizes of 1-35 ?m and 45-205 ?m is from 1:9 to 4:6, the composite including an aluminum-containing metal as the balance, wherein the composite is covered, on both main surfaces, with a surface layer having prescribed film thicknesses and containing 80 vol % or more of an aluminum-containing metal, two or more Ni-containing layers are formed on at least the surface layer, the Ni-containing layers being such that a first and second layer from the surface layer side are amorphous Ni alloy layers having prescribed thicknesses, and an Au layer having a prescribed thickness is formed as an outermost layer.
    Type: Application
    Filed: November 24, 2017
    Publication date: November 7, 2019
    Applicant: DENKA COMPANY LIMITED
    Inventors: Yosuke ISHIHARA, Takeshi MIYAKAWA, Hiroaki OTA, Hideo TSUKAMOTO
  • Patent number: 10333161
    Abstract: A low-temperature startup method for a fuel cell, includes detecting a temperature of the fuel cell. It is determined whether the temperature is lower than a threshold temperature. A drying operation to dry the fuel cell is increased when the temperature is determined to be lower than the threshold temperature upon starting the fuel cell to generate electric power via an electrochemical reaction between fuel gas and oxidant gas.
    Type: Grant
    Filed: February 16, 2017
    Date of Patent: June 25, 2019
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Masakazu Hamachi, Hiroaki Ota, Shinya Watanabe