Patents by Inventor Takashi Sakurada

Takashi Sakurada 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: 20230416859
    Abstract: This steel sheet has a predetermined chemical composition, has a microstructure in which a number density of alloy carbides present at grain boundaries and having a major axis of 10 to 100 nm is 1.0×108 to 1.0×1011/cm2 and a number density of alloy carbides present in grains and having a major axis of 10 nm or less is 1.0×1016 to 1.0×1019/cm3, and has a tensile strength of 1,030 MPa or more.
    Type: Application
    Filed: November 18, 2021
    Publication date: December 28, 2023
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Hideto HIROSHIMA, Takashi YASUTOMI, Eisaku SAKURADA
  • Patent number: 11851557
    Abstract: To provide a curable composition being excellent in curability and being capable of forming a cured product which is excellent in heat resistance, which is excellent in adhesion to an inorganic substrate or an inorganic compound layer, and which is hardly peeled even when exposed to a high temperature/high humidity environment for a long time, a cured product formed by curing the curable composition, and a laminate. A curable composition comprising specific metal oxide fine particles A, a specific (meth)acrylate B, a specific antioxidant, an organopolysiloxane and a radical polymerization initiator, which may further contain a specific epoxy (meth)acrylate C, and which may further contain a specific urethane (meth)acrylate D. A cured product formed by curing the curable composition, and a laminate having the cured product.
    Type: Grant
    Filed: January 31, 2020
    Date of Patent: December 26, 2023
    Assignee: AGC Inc.
    Inventors: Keisuke Takagi, Takashi Sasaki, Tomoaki Sakurada
  • Publication number: 20230407430
    Abstract: This steel sheet has predetermined chemical composition and microstructure, in a crystal orientation distribution function of a texture at a sheet thickness ¼ position, when A/B that is a ratio of a maximum value A of pole densities at ?=20° to 60° and ?1=30° to 90° in a cross section of ?2=45° to a maximum value B of pole densities at ?=120° to 60° and ?1=30° to 90° in the cross section of ?2=45° is 1.50 or less, a total of the maximum value A and the maximum value B is 6.00 or less, and a tensile strength is 1030 MPa or more.
    Type: Application
    Filed: November 19, 2021
    Publication date: December 21, 2023
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Takashi YASUTOMI, Eisaku SAKURADA
  • Publication number: 20230369411
    Abstract: A method of manufacturing a silicon carbide semiconductor device includes the following steps. In a silicon carbide substrate including a silicon carbide single-crystal substrate and a silicon carbide epitaxial film provided on the silicon carbide single-crystal substrate, a reference mark serving as a reference of two dimensional position coordinates is formed. After forming the reference mark, at least one of polishing or cleaning is performed on a reference mark formation surface of the silicon carbide substrate. Position coordinates of a defect present in the silicon carbide substrate are specified based on the reference mark. A device active region is formed in the silicon carbide substrate. Position coordinates of the device active region are specified based on the reference mark. A pass/fail judgement of the device active region is made by associating the position coordinates of the defect with the position of the device active region.
    Type: Application
    Filed: July 27, 2021
    Publication date: November 16, 2023
    Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Takashi SAKURADA, Taro NISHIGUCHI, Tetsuro KONDO, Naoki MATSUMOTO, Makoto SASAKI, Hirofumi YAMAMOTO
  • Patent number: 11781246
    Abstract: In a case where a detector is positioned in a [11-20] direction, and where a first measurement region including a center of a main surface is irradiated with an X ray in a direction within ±15° relative to a [?1-120] direction, a ratio of a maximum intensity of a first intensity profile is more than or equal to 1500. In a case where the detector is positioned in a direction parallel to a [?1100] direction, and where the first measurement region is irradiated with an X ray in a direction within ±6° relative to a [1-100] direction, a ratio of a maximum intensity of a second intensity profile is more than or equal to 1500. An absolute value of a difference between maximum value and minimum value of energy at which the first intensity profile indicates a maximum value is less than or equal to 0.06 keV.
    Type: Grant
    Filed: November 23, 2022
    Date of Patent: October 10, 2023
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Kyoko Okita, Takashi Sakurada, Eiryo Takasuka, Shunsaku Ueta, Sho Sasaki, Naoki Kaji, Hidehiko Mishima, Hirokazu Eguchi
  • Publication number: 20230085682
    Abstract: A device may include a coil unit assembly that includes a first, second, and third coil unit annularly arranged. Further, may include a busbar provided on an outer peripheral surface of the coil unit assembly, wherein when a direction in which an axis of the stator extends is defined as an axial direction, a direction which is orthogonal to the axial direction and in which outer peripheral surface and inner peripheral surface of the stator face each other is a radial direction, and a direction along an outer periphery of the stator when viewed from the axial direction is a circumferential direction, wherein the coil units each include a split core that includes a tooth that extends in the radial direction, an insulator mounted to overlap at least the tooth of the split core, and a coil that includes a winding wound around the tooth of the split core with the insulator interposed therebetween.
    Type: Application
    Filed: November 25, 2022
    Publication date: March 23, 2023
    Inventors: Hisato AMANO, Mitsutoshi NATSUMEDA, Eiji SAKAGUCHI, Takashi SAKURADA, Takahiro SATO, Masashi UNO
  • Publication number: 20230081506
    Abstract: In a case where a detector is positioned in a [11-20] direction, and where a first measurement region including a center of a main surface is irradiated with an X ray in a direction within ±15° relative to a [?1-120] direction, a ratio of a maximum intensity of a first intensity profile is more than or equal to 1500. In a case where the detector is positioned in a direction parallel to a [?1100] direction, and where the first measurement region is irradiated with an X ray in a direction within ±6° relative to a [1-100] direction, a ratio of a maximum intensity of a second intensity profile is more than or equal to 1500. An absolute value of a difference between maximum value and minimum value of energy at which the first intensity profile indicates a maximum value is less than or equal to 0.06 keV.
    Type: Application
    Filed: November 23, 2022
    Publication date: March 16, 2023
    Applicant: Sumitomo Electric Industries, Ltd.
    Inventors: Kyoko OKITA, Takashi SAKURADA, Eiryo TAKASUKA, Shunsaku UETA, Sho SASAKI, Naoki KAJI, Hidehiko MISHIMA, Hirokazu EGUCHI
  • Publication number: 20230059737
    Abstract: A silicon carbide epitaxial substrate according to a present disclosure includes a silicon carbide substrate and a silicon carbide epitaxial layer disposed on the silicon carbide substrate. The silicon carbide epitaxial layer includes a boundary surface in contact with the silicon carbide substrate and a main surface opposite to the boundary surface. The main surface has an outer circumferential edge, an outer circumferential region extending within 5 mm from the outer circumferential edge, and a central region surrounded by the outer circumferential region. When an area density of double Shockley stacking faults in the outer circumferential region is defined as a first area density, and an area density of double Shockley stacking faults in the central region is defined as a second area density, the first area density is five or more times as large as the second area density, the second area density is 0.2 cm?2 or more.
    Type: Application
    Filed: January 19, 2021
    Publication date: February 23, 2023
    Inventors: Hironori ITOH, Taro NISHIGUCHI, Takashi SAKURADA
  • Patent number: 11535953
    Abstract: In a case where a detector is positioned in a [11-20] direction, and where a first measurement region including a center of a main surface is irradiated with an X ray in a direction within ±15° relative to a [?1-120] direction, a ratio of a maximum intensity of a first intensity profile is more than or equal to 1500. In a case where the detector is positioned in a direction parallel to a [?1100] direction, and where the first measurement region is irradiated with an X ray in a direction within ±6° relative to a [1-100] direction, a ratio of a maximum intensity of a second intensity profile is more than or equal to 1500. An absolute value of a difference between maximum value and minimum value of energy at which the first intensity profile indicates a maximum value is less than or equal to 0.06 keV.
    Type: Grant
    Filed: January 30, 2017
    Date of Patent: December 27, 2022
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Kyoko Okita, Takashi Sakurada, Eiryo Takasuka, Shunsaku Ueta, Sho Sasaki, Naoki Kaji, Hidehiko Mishima, Hirokazu Eguchi
  • Patent number: 11438680
    Abstract: A motor that includes a plurality of stator members and a busbar member. The busbar member connects to coil end portions of a predetermined stator member of the plurality of stator members. The busbar member may comprise a first busbar, a second busbar, and a third busbar. The busbars may include an annular-shaped base portion, and a connection terminal connected to an outer circumference of the base portion and connected to the coil end portions. The busbar member and the plurality of stator members may be aligned in an axial direction. Each connection terminal of the busbars may have a shape projecting toward the stator member relative to the base portion.
    Type: Grant
    Filed: February 25, 2020
    Date of Patent: September 6, 2022
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Mitsutoshi Natsumeda, Eiji Sakaguchi, Hisato Amano, Takashi Sakurada
  • Patent number: 11398760
    Abstract: A stator member includes a stator core, a coil, and an insulator. The stator core has a shape extending in an axial direction, and has a side surface parallel to the axial direction. The coil has a linear shape and is wound around the side surface of the stator core. The coil has a coil end portion 231 at one end of the coil having the linear shape, and a coil end portion 232 at another end of the coil having the linear shape. The insulator has insulation properties, and is provided with an outer member. The outer member has a first recess and a second recess extending in a thickness direction. The coil end portion 231 is inserted into the first recess. The coil end portion 232 is inserted into the second recess.
    Type: Grant
    Filed: February 26, 2020
    Date of Patent: July 26, 2022
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Mitsutoshi Natsumeda, Hisato Amano, Takashi Sakurada, Eiji Sakaguchi
  • Patent number: 11397053
    Abstract: A heat exchanger includes a heat exchanger core, an intake tank, and a flow limiting portion. The heat exchanger core includes a stacked heat exchange portion, a distribution portion, and a collection portion. The stacked heat exchange portion defines first fluid flow paths through which a first fluid flows in a first direction, and second fluid flow paths through which a second fluid flows in a third direction. The distribution portion is configured to distribute the first fluid to the first fluid flow paths. The collection portion is configured to collect the first fluid from the first fluid flow paths. The flow limiting portion is configured to suppress an inflow of the second fluid from the intake tank into the distribution portion and the collection portion. The flow limiting portion and the intake tank are provided as a single component.
    Type: Grant
    Filed: February 24, 2020
    Date of Patent: July 26, 2022
    Assignee: DENSO CORPORATION
    Inventors: Takashi Sakurada, Shota Terachi
  • Patent number: 11329526
    Abstract: A stator member may include a columnar stator core, a linear coil, and an insulating insulator. The linear coil may be wound around the stator core. The insulator may be disposed between the stator core and the coil. Furthermore, the insulator may include a central member and an outer member. The central member may cover the stator core. The outer member may be connected to an outside of the central member in an axial direction of the stator core. The outer member may include a surface extending in a thickness direction in which the central member and the outer member are arranged, and a groove recessed in a direction orthogonal to the thickness direction from the surface. A connection terminal of a busbar member may be inserted into the groove.
    Type: Grant
    Filed: February 26, 2020
    Date of Patent: May 10, 2022
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Mitsutoshi Natsumeda, Eiji Sakaguchi, Hisato Amano, Takashi Sakurada
  • Patent number: 11239719
    Abstract: A motor that includes a plurality of stator members and a busbar member. A coil may be wound around each of the plurality of stator members, and the plurality of stator members may be arranged in an annular shape when viewed in an axial direction of the motor. The busbar member may connect to the coil ends of the plurality of stator members. The busbar member may comprise an annular shaped base portion, and a connection terminal connected to the base portion and connected to the coil end portions. The connection terminal may be provided with two recesses. The coil end portion of a first stator member and the coil end portion of a second stator member may be inserted through the two recesses respectively, where the first stator member and the second stator member are adjacent to each other.
    Type: Grant
    Filed: February 25, 2020
    Date of Patent: February 1, 2022
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Mitsutoshi Natsumeda, Hisato Amano, Takashi Sakurada, Eiji Sakaguchi
  • Patent number: 11179896
    Abstract: A bonded body is formed of a first member and a second member. The first member has a first base portion and a first welded portion which protrudes from the first base portion toward the second member side. The second member has a second base portion and a second welded portion which protrudes from the second base portion toward the first member side. In a first region of the joint portion, a first rib formed so as to project from the first base portion toward the second member side covers the first welded portion and the second welded portion from the side. In a second region different from the first region, a second rib formed so as to project from the second base portion toward the first member side covers the first welded portion and the second welded portion from the side.
    Type: Grant
    Filed: August 21, 2019
    Date of Patent: November 23, 2021
    Assignee: DENSO CORPORATION
    Inventors: Takashi Sakurada, Masaya Nakamura, Shota Terachi
  • Publication number: 20210241934
    Abstract: An electrically conductive GaAs crystal has an atomic concentration of Si more than 1×1017 cm?3, wherein density of precipitates having sizes of at least 30 nm contained in the crystal is at most 400 cm?2. In this case, it is preferable that the conductive GaAs crystal has a dislocation density of at most 2×10?2 cm2 or at least 1×10?3 cm2.
    Type: Application
    Filed: April 19, 2021
    Publication date: August 5, 2021
    Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Takashi Sakurada, Tomohiro Kawase
  • Patent number: 11017913
    Abstract: An electrically conductive GaAs crystal has an atomic concentration of Si more than 1×1017 cm?3, wherein density of precipitates having sizes of at least 30 nm contained in the crystal is at most 400 cm?2. In this case, it is preferable that the conductive GaAs crystal has a dislocation density of at most 2×10?2 cm2 or at least 1×10?3 cm2.
    Type: Grant
    Filed: May 10, 2018
    Date of Patent: May 25, 2021
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Takashi Sakurada, Tomohiro Kawase
  • Publication number: 20210054529
    Abstract: In a case where a detector is positioned in a [11-20] direction, and where a first measurement region including a center of a main surface is irradiated with an X ray in a direction within ±15° relative to a [?1-120] direction, a ratio of a maximum intensity of a first intensity profile is more than or equal to 1500. In a case where the detector is positioned in a direction parallel to a [?1100] direction, and where the first measurement region is irradiated with an X ray in a direction within ±6° relative to a [1-100] direction, a ratio of a maximum intensity of a second intensity profile is more than or equal to 1500. An absolute value of a difference between maximum value and minimum value of energy at which the first intensity profile indicates a maximum value is less than or equal to 0.06 keV.
    Type: Application
    Filed: January 30, 2017
    Publication date: February 25, 2021
    Applicant: Sumitomo Electric Industries, Ltd.
    Inventors: Kyoko OKITA, Takashi SAKURADA, Eiryo TAKASUKA, Shunsaku UETA, Sho SASAKI, Naoki KAJI, Hidehiko MISHIMA, Hirokazu EGUCHI
  • Publication number: 20200280229
    Abstract: A busbar device includes an insulating sheet that is annularly formed by laminating an insulating layer and an adhesive layer and also includes an annular busbar. Moreover, the busbar is adhered to the adhesive layer. The insulating sheet and the busbar are laminated in a direction parallel to a central axis of the busbar.
    Type: Application
    Filed: February 24, 2020
    Publication date: September 3, 2020
    Inventors: Takashi Sakurada, Mitsutoshi Natsumeda, Eiji Sakaguchi, Hisato Amano
  • Publication number: 20200280235
    Abstract: A stator member may include a columnar stator core, a linear coil, and an insulating insulator. The linear coil may be wound around the stator core. The insulator may be disposed between the stator core and the coil. Furthermore, the insulator may include a central member and an outer member. The central member may cover the stator core. The outer member may be connected to an outside of the central member in an axial direction of the stator core. The outer member may include a surface extending in a thickness direction in which the central member and the outer member are arranged, and a groove recessed in a direction orthogonal to the thickness direction from the surface. A connection terminal of a busbar member may be inserted into the groove.
    Type: Application
    Filed: February 26, 2020
    Publication date: September 3, 2020
    Inventors: Mitsutoshi Natsumeda, Eiji Sakaguchi, Hisato Amano, Takashi Sakurada