Patents by Inventor Ryo Sakamoto

Ryo Sakamoto 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: 20240119967
    Abstract: An example thin substrate built-in hard disk drive includes a magnetic disk in a disk shape having a through-hole at the center, a spindle motor inserted into the through-hole of the magnetic disk and co-rotatably supporting the magnetic disk, and a base plate made of an aluminum alloy and supporting the spindle motor. The base plate has a metallographic structure in which a perimeter of a second phase particle having a longest diameter of 10 ?m or more is 3 mm/mm2 or more, and the number of second phase particles having a longest diameter of 500 ?m or more is 0 particles/mm2.
    Type: Application
    Filed: April 20, 2023
    Publication date: April 11, 2024
    Applicants: UACJ Corporation, Furukawa Electric Co., Ltd.
    Inventors: Kotaro KITAWAKI, Hideyuki HATAKEYAMA, Wataru KUMAGAI, Ryo SAKAMOTO
  • Publication number: 20240082959
    Abstract: A laser processing apparatus includes a support unit that supports a wafer including a plurality of functional elements disposed adjacent to each other via a street, an irradiation unit that irradiates the street with laser light, and a control unit that controls the irradiation unit based on information about the streets so that a first region and a second region of the street are simultaneously irradiated with the laser light, and a power of the laser light for removing a surface layer of the street in the first region is higher than a power for removing the surface layer of the street in the first region. The information about the street includes information that a processing threshold value indicating a difficulty of laser processing in the first region is lower than a processing threshold value in the second region.
    Type: Application
    Filed: December 20, 2021
    Publication date: March 14, 2024
    Applicant: HAMAMATSU PHOTONICS K.K.
    Inventors: Yo SUGIMOTO, Takeshi SAKAMOTO, Takafumi OGIWARA, Naoki UCHIYAMA, Takashi KURITA, Ryo YOSHIMURA
  • Publication number: 20240071861
    Abstract: A semiconductor device includes a semiconductor element, a wiring member, a sintered member between a first main electrode of the semiconductor element and the wiring member, and a sealing body. The wiring member includes a base material, a metal film on a face of the base material, and an uneven oxide film. The uneven oxide film includes a thick film portion and a thin film portion. An opposing face of the wiring member opposing the semiconductor element includes a mounting portion to which the first main electrode is bonded, an outer peripheral portion formed with the thick film portion and surrounding the semiconductor element, and an intermediate portion formed with the thin film portion between the mounting portion and the outer peripheral portion. The sintered member overlaps with the mounting portion and the intermediate portion in the plan view, and is in contact with the thin film portion.
    Type: Application
    Filed: November 8, 2023
    Publication date: February 29, 2024
    Inventors: Ryo KIMURA, Yuji KOJIMA, Takashi SATO, Yoshitsugu SAKAMOTO, Tomomi OKUMURA
  • Publication number: 20240018633
    Abstract: An aluminum alloy disc blank for a magnetic disc made of an aluminum alloy containing Mg: 3.40 to 3.90 mass % with the balance being A1 and inevitable impurities, wherein a conductivity of the aluminum alloy disc blank is 36.0% IACS or higher.
    Type: Application
    Filed: June 14, 2023
    Publication date: January 18, 2024
    Applicants: UACJ CORPORATION, FURUKAWA ELECTRIC CO., LTD.
    Inventors: Kotaro KITAWAKI, Hideyuki HATAKEYAMA, Wataru KUMAGAI, Ryo SAKAMOTO
  • Publication number: 20240021213
    Abstract: 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: Application
    Filed: June 14, 2023
    Publication date: January 18, 2024
    Applicants: UACJ CORPORATION, FURUKAWA ELECTRIC CO., LTD.
    Inventors: Kotaro KITAWAKI, Hideyuki HATAKEYAMA, Wataru KUMAGAI, Ryo SAKAMOTO
  • Publication number: 20230339810
    Abstract: The present invention aims at providing a composition containing aggregate, binder, and water that can achieve a higher degree of both flowability in the fresh state and a limitation of autogenous shrinkage. A composition of the present invention contains binder, aggregate, and water, wherein the aggregate contains: small-diameter aggregate classified into particle diameters of 300 ?m or more and less than 1.18 mm; medium-diameter aggregate classified into particle diameters of 1.18 mm or more and less than 4.75 mm; and large-diameter aggregate classified into particle diameters of 4.75 mm or more and 5 mm or less; wherein a ratio of volume of water to a sum of volume of the binder and volume of aggregate having particle diameters of 5 mm or less is 15% or more and 26% or less, and the small-diameter aggregate, the medium-diameter aggregate, and the large-diameter aggregate each have a BET specific surface area of 0.4 (m2/g) or less.
    Type: Application
    Filed: March 31, 2021
    Publication date: October 26, 2023
    Applicant: SUMITOMO MITSUI CONSTRUCTION CO., LTD.
    Inventors: Taku MATSUDA, Akio KASUGA, Ryo SAKAMOTO
  • Publication number: 20230335161
    Abstract: An aluminum alloy disc blank for a magnetic disc made of an aluminum alloy containing Fe: 0.005 to 1.800 mass % with the balance being Al and inevitable impurities, wherein a flatness change of the aluminum alloy disc blank for a magnetic disc when the aluminum alloy disc blank for a magnetic disc is held in the atmosphere at 50° C. or lower for 336 hours is 2.0 ?m or less.
    Type: Application
    Filed: June 22, 2023
    Publication date: October 19, 2023
    Applicants: UACJ CORPORATION, FURUKAWA ELECTRIC CO., LTD.
    Inventors: Kotaro KITAWAKI, Ryo SAKAMOTO, Wataru KUMAGAI
  • Publication number: 20230267613
    Abstract: From a plurality of medical images in time phases, a target site is extracted from at least one medical image, a reference point is set on each of a target-site side, and a periphery side of the target site which are on across from each other over an outline of the extracted target site, and movement information for the reference points is calculated.
    Type: Application
    Filed: April 28, 2023
    Publication date: August 24, 2023
    Inventors: Ryo Sakamoto, Koji Sakai, Gakuto Aoyama, Kiyohide Satoh
  • Patent number: 11721361
    Abstract: There are provided: an aluminum alloy substrate for a magnetic disk, the aluminum alloy substrate including an aluminum alloy including 0.4 to 3.0 mass % of Fe and the balance of Al and unavoidable impurities, in which second phase particles having a longest diameter of 0.5 ?m or more and less than 2.0 ?m are dispersed at a distribution density of 5000 particles/mm2 or more; a method for producing the same; and a magnetic disk using the aluminum alloy substrate for a magnetic disk.
    Type: Grant
    Filed: April 9, 2018
    Date of Patent: August 8, 2023
    Assignees: UACJ CORPORATION, FURUKAWA ELECTRIC CO., LTD.
    Inventors: Kotaro Kitawaki, Takuya Murata, Makoto Yonemitsu, Yu Matsui, Yasuo Fujii, Ryo Sakamoto, Takashi Nakayama, Wataru Kumagai
  • Publication number: 20230238027
    Abstract: A magnetic disk substrate includes an aluminum alloy including one type or two or more types of Fe: 8.5 mass % or less, Mn: 2.5 mass % or less, Ni: 6.5 mass % or less, and Mg: 4.5 mass % or less, a balance being Al and unavoidable impurities, wherein, when f (Hz) is a resonance frequency, ? (g/cm3) is a density, and t (mm) is a plate thickness, (f×?/t) is 3800 or greater; and a magnetic disk using the magnetic disk substrate.
    Type: Application
    Filed: June 30, 2021
    Publication date: July 27, 2023
    Inventors: Kotaro KITAWAKI, Hideyuki HATAKEYAMA, Wataru KUMAGAI, Ryo SAKAMOTO
  • Patent number: 11676277
    Abstract: From a plurality of medical images in time phases, a target site is extracted from at least one medical image, a reference point is set on each of a target-site side, and a periphery side of the target site which are on across from each other over an outline of the extracted target site, and movement information for the reference points is calculated.
    Type: Grant
    Filed: October 14, 2021
    Date of Patent: June 13, 2023
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Ryo Sakamoto, Koji Sakai, Gakuto Aoyama, Kiyohide Satoh
  • Publication number: 20230120845
    Abstract: An aluminum alloy substrate for magnetic disks, including an aluminum alloy containing: 1.0 to 6.5 mass % of Mg; and the balance consisting of Al and unavoidable impurities, in which the distribution of Si—K—O-based particles with a longest diameter of 1 ?m or more adhering to the surface from the surrounding environment is equal to or less than one particle/6,000 mm2; and in which the distribution of Ti—B-based particles with a longest diameter of 1 ?m or more present on the surface is equal to or less than one particle/6,000 mm2, and a magnetic disk using the aluminum alloy substrate for magnetic disks.
    Type: Application
    Filed: April 6, 2021
    Publication date: April 20, 2023
    Inventors: Kotaro KITAWAKI, Wataru KUMAGAI, Ryo SAKAMOTO, Hideyuki HATAKEYAMA
  • Publication number: 20230111915
    Abstract: An aluminum alloy substrate for magnetic disks, including an aluminum alloy containing Fe as an essential element; at least one of Mn or Ni as selective elements; and the balance including Al and unavoidable impurities, with the total amount of Fe, Mn, and Ni having a relationship of 0.10 to 7.00 mass %; in which the distribution of Si—K—O-based particles with a longest diameter of 1 ?m or more adhering to the surface from the surrounding environment is equal to or less than one particle/6,000 mm2, and in which the distribution of Ti—B-based particles with a longest diameter of 1 ?m or more present on the surface is equal to or less than one particle/6,000 mm2; and a magnetic disk using the aluminum alloy substrate.
    Type: Application
    Filed: April 6, 2021
    Publication date: April 13, 2023
    Inventors: Kotaro KITAWAKI, Ryo SAKAMOTO, Wataru KUMAGAI, Hideyuki HATAKEYAMA
  • Publication number: 20230100503
    Abstract: A first fuse device includes a first conductor, at least a portion of the conductor being functioning as a fuse, and a first wiring electrically connected to the first conductor. At least a portion of the first wiring passes through a first space of the first conductor, the first space being defining the fuse.
    Type: Application
    Filed: September 26, 2022
    Publication date: March 30, 2023
    Applicant: ENVISION AESC JAPAN LTD.
    Inventors: Takami IZAWA, Masayuki NAKAI, Shinkichi TOYOSAKI, Yasuhiro YANAGIHARA, Ryo SAKAMOTO, Ryuichi AMAGAI
  • Publication number: 20230102106
    Abstract: A battery module includes a battery cell, a positive electrode lead or negative electrode lead provided in the battery cell, a first conductor electrically connected to the battery cell, at least a portion of the first conductor being functioning as a fuse above the positive electrode lead or the negative electrode lead, and a first base, at least a portion of the first base being located between the positive electrode lead or negative electrode lead, and the fuse.
    Type: Application
    Filed: September 26, 2022
    Publication date: March 30, 2023
    Applicant: ENVISION AESC JAPAN LTD.
    Inventors: Lokesh Yadav BATTULA, Ryo SAKAMOTO, Masayuki NAKAI, Shinkichi TOYOSAKI, Yasuhiro YANAGIHARA
  • Publication number: 20230049879
    Abstract: There are provided an aqueous electrolyte solution having an extended potential window, in particular, an aqueous electrolyte solution whose potential window is further wider than those exhibited by conventional concentrated aqueous electrolyte solutions, and an aqueous electrolyte solution in which the cycle characteristics can be improved. A non-aqueous electrolyte solution capable of achieving a higher energy density is provided, the non-aqueous electrolyte solution containing easily available and inexpensive materials and having further improved characteristics. One aqueous electrolyte solution of the present embodiment contains a salt of at least one selected from the group consisting of sodium, magnesium, potassium and lithium, and a chaotropic additive. One other non-aqueous electrolyte solution of the present embodiment contains a salt of at least one selected from the group consisting of sodium, magnesium, potassium and lithium, and a chaotropic additive.
    Type: Application
    Filed: November 2, 2020
    Publication date: February 16, 2023
    Applicants: KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION, TOSOH CORPORATION
    Inventors: Shigeto OKADA, Ryo SAKAMOTO, Masato ITO, Kotaro USHIJIMA, Toshiya TAKAHARA, Wataru KOBAYASHI, Masaki OKADA
  • Patent number: 11482251
    Abstract: An aluminum alloy substrate for a magnetic disk including an aluminum alloy containing 0.1 to 3.0 mass % of Fe, 0.005 to 1.000 mass % of Cu, and 0.005 to 1.000 mass % of Zn, with a balance of Al and inevitable impurities, wherein in an outer peripheral surface thereof, the number of holes having maximum diameters of 10 ?m or more is 200/mm2 or less, an aluminum alloy base disk for a magnetic disk and a magnetic disk, using the aluminum alloy substrate, and methods for manufacturing these.
    Type: Grant
    Filed: October 25, 2019
    Date of Patent: October 25, 2022
    Assignees: UACJ CORPORATION, FURUKAWA ELECTRIC CO., LTD.
    Inventors: Takuya Murata, Kotaro Kitawaki, Makoto Yonemitsu, Hideyuki Hatakeyama, Ryo Sakamoto, Hiroki Ota
  • Patent number: 11361791
    Abstract: An aluminum alloy sheet for a magnetic disk includes an aluminum alloy comprising 0.10 to 3.00 mass % (hereafter simply “%”) of Fe, 0.1 to 3.0% of Mn, 0.003 to 1.000% of Cu, and 0.005 to 1.000 s % of Zn, wherein second phase particles having a maximum diameter of 100 ?m or more and 300 ?m or less are dispersed at a distribution density of 50 particles/mm2 or less in a region (A) occupying 25% or less of a sheet thickness from a sheet thickness center plane to opposite surfaces of the sheet, second phase particles having a maximum diameter of 100 ?m or more and 300 ?m or less are 0 particles/mm2 in a region (C) that is obtained by excluding the region (A) from a region (B) occupying 50% or less of the sheet thickness from the sheet thickness center plane to the opposite surfaces of the sheet, and the amount of Mn solid solution is 0.03 mass % or more.
    Type: Grant
    Filed: July 24, 2019
    Date of Patent: June 14, 2022
    Assignees: UACJ CORPORATION, FURUKAWA ELECTRIC CO., LTD.
    Inventors: Kotaro Kitawaki, Makoto Yonemitsu, Hideyuki Hatakeyama, Sadayuki Toda, Ryo Sakamoto, Yasuo Fujii
  • Patent number: 11341995
    Abstract: An aluminum alloy sheet for a magnetic disk, a method for manufacturing same, and a magnetic disk using same. The aluminum alloy sheet is made of an aluminum alloy comprising 0.10 to 3.00 mass % of Fe, 0.003 to 1.000 mass % of Cu, and 0.005 to 1.000 mass % of Zn, with a balance of Al and unavoidable impurities, wherein a value obtained by dividing a difference in an area ratio (%) of second phase particles between a region (A) and a region (B) by an average value of area ratios (%) of second phase particles in the regions (A) and (B) is 0.05 or less, the region (A) being a region from a sheet thickness center plane to a front surface of the sheet, and the region (B) being a region from the sheet thickness center plane to a rear surface of the plate.
    Type: Grant
    Filed: October 15, 2019
    Date of Patent: May 24, 2022
    Assignees: UACJ CORPORATION, FURUKAWA ELECTRIC CO.. LTD.
    Inventors: Kotaro Kitawaki, Yu Igarashi, Keisuke Kamiya, Yu Matsui, Makoto Yonemitsu, Ryo Sakamoto, Hideyuki Hatakeyama, Hiroki Ota
  • Patent number: 11270730
    Abstract: A magnetic disk substrate is composed of an aluminum alloy substrate, a base plating layer on a surface of the aluminum alloy substrate, and a boundary region between the aluminum alloy substrate and the base plating layer. The boundary region includes a specific boundary region (D(1)I(50-84)) having Al emission intensities equal to 50% to 84% of an average Al emission intensity in an interior region of the aluminum alloy substrate in glow discharge optical emission spectroscopy in the depthwise direction from the surface of the magnetic disk substrate. The specific boundary region (D(1)I(50-84)) has a maximum Fe emission intensity (I(1)Fe(max)) higher than an average Fe emission intensity (I(1)Fe(ave)) in the interior region of the aluminum alloy substrate in the glow discharge optical emission spectroscopy.
    Type: Grant
    Filed: November 28, 2018
    Date of Patent: March 8, 2022
    Assignees: UACJ CORPORATION, FURUKAWA ELECTRIC CO., LTD.
    Inventors: Takuya Murata, Kotaro Kitawaki, Makoto Yonemitsu, Yasuo Fujii, Ryo Sakamoto, Hideyuki Hatakeyama, Sadayuki Toda