Patents by Inventor Hiroki Ota

Hiroki 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).

  • Publication number: 20250038558
    Abstract: A power source apparatus includes: an auxiliary power source; and a control circuit configured to control charging and discharging of the auxiliary power source. The control circuit is configured to, after completion of the initial check, charge the auxiliary power source after waiting for traveling preparation of the vehicle to be completed. The control circuit is configured to, after the completion of the initial check, charge the auxiliary power source when both of a first condition and a second condition are satisfied even before the completion of the traveling preparation of the vehicle. The first condition is a condition in which an amount of elapsed time from when the initial check is completed is equal to or more than a time threshold. The second condition is a condition in which voltage across the auxiliary power source is less than a voltage threshold.
    Type: Application
    Filed: July 23, 2024
    Publication date: January 30, 2025
    Applicants: JTEKT CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Tokuaki HIBINO, Fumihiko SATO, Hiroki NITTA, Kohei OTA, Takumi MIO, Daiki INABA, Atsushi SATOU, Masaharu YAMASHITA, Yosuke YAMASHITA, Yasushi HORA
  • Patent number: 12179762
    Abstract: Provided is a vehicle control apparatus capable of preventing sudden deceleration of a vehicle to be controlled even in a case of failure to recognize a step condition at a predetermined position. The vehicle control apparatus 140 is mounted on the vehicle.
    Type: Grant
    Filed: December 15, 2020
    Date of Patent: December 31, 2024
    Assignee: HITACHI ASTEMO, LTD.
    Inventor: Hiroki Ota
  • Patent number: 12178573
    Abstract: A bilirubin concentration measurement system including: a sensor device attachable to a subject; and a terminal device capable of wirelessly communicating with the sensor device. The sensor device includes: a light emitting diode that emits blue light; a light emitting diode that emits green light; a light detection diode that detects reflected light that is the blue light having been incident on skin of the subject and reflected, and detects reflected light that is the green light having been incident on the skin of the subject and reflected; and a communication unit that wirelessly transmits information about intensities of the reflected light detected by the photodiode. The terminal device includes: a communication unit that receives the information about the intensities of the reflected light transmitted from the sensor device; and a computing unit that calculates a bilirubin concentration using the information about the intensities of the reflected light.
    Type: Grant
    Filed: December 17, 2019
    Date of Patent: December 31, 2024
    Assignees: NATIONAL UNIVERSITY CORPORATION YOKOHAMA NATIONAL UNIVERSITY, PUBLIC UNIVERSITY CORPORATION YOKOHAMA CITY UNIVERSITY
    Inventors: Hiroki Ota, Yutaka Isoda, Go Inamori, Shuichi Ito, Azusa Uozumi
  • Patent number: 12157937
    Abstract: Provided herein is a duplex stainless steel seamless pipe and a method for manufacturing the same. The duplex stainless steel seamless pipe has a composition comprising, in mass %, C: 0.005 to 0.08%, Si: 0.01 to 1.0%, Mn: 0.01 to 10.0%, Cr: 20 to 35%, Ni: 1 to 15%, Mo: 0.5 to 6.0%, N: 0.150 to less than 0.400%, and one, two or more selected from Ti: 0.0001 to 0.3%, Al: 0.0001 to 0.3%, V: 0.005 to 1.5%, Nb: 0.005 to less than 1.5%, and the balance being Fe and incidental impurities. The duplex stainless steel seamless pipe contains N, Ti, Al, V, and Nb so as to satisfy the following formula (1). The duplex stainless steel seamless pipe has an axial tensile yield strength of 757 MPa or more, and a ratio of 0.85 to 1.15 as a fraction of axial compressive yield strength to axial tensile yield strength. 0.150>N?(1.58Ti+2.70Al+1.58V+1.44Nb)??(1), wherein N, Ti, Al, V, and Nb represent the content of each element in mass %.
    Type: Grant
    Filed: November 1, 2019
    Date of Patent: December 3, 2024
    Assignee: JFE Steel Corporation
    Inventors: Shunsuke Sasaki, Tatsuro Katsumura, Hiroki Ota, Kazuki Fujimura, Masao Yuga
  • Publication number: 20240278381
    Abstract: A polishing head having a first annular member, a closing member, a membrane, and a second annular member situated under the membrane and having an opening which holds a work to be polished. A space, which is formed by closing the opening of the first annular member with the closing member and the membrane, is partitioned into an inside space and an outside space with an annular partition wall having a top annular connection part connected to the closing member and a bottom annular connection part connected to the membrane, the inside diameter of the bottom annular connection part of the annular partition wall is larger than the inside diameter of the second annular member, and the outer circumferential region of the setting position of the work to be polished is situated vertically under the top annular connection part of the annular partition wall.
    Type: Application
    Filed: April 21, 2022
    Publication date: August 22, 2024
    Applicant: SUMCO CORPORATION
    Inventors: Ryoya TERAKAWA, Hiroki OTA
  • Publication number: 20240198479
    Abstract: The polishing head has, with the direction toward the center of the opening of the first annular member assumed as the inside, and with the other direction assumed as the outside, the space, formed by closing the opening of the first annular member by the closing member and the membrane, and partitioned into an inside space and an outside space by an annular partition wall with a top annular connection part connected to the closing member and with a bottom annular connection part connected to the membrane, the inside diameter of the bottom annular connection part of the annular partition wall is larger than the inside diameter of the second annular member, and the radius of the top annular connection part of the annular partition wall is 33% or more and 90% or less with the radius of the setting position of the work to be polished assumed as 100%.
    Type: Application
    Filed: December 19, 2023
    Publication date: June 20, 2024
    Applicant: SUMCO CORPORATION
    Inventors: Hiroki OTA, Ryoya TERAKAWA
  • Publication number: 20230330809
    Abstract: A wafer polishing method includes acquiring in-plane thickness distribution information regarding a wafer to be polished or a wafer subjected to the same processing treatment, determining a difference in pressure between a pressure Pc to be applied to the central part of the wafer by introducing a gas into the central region and a pressure Pe to be applied to the outer peripheral part of the wafer by introducing a gas into the outer peripheral region, determining any one pressure of Pc and Pe, and determining the other pressure, determining the pressure Pg to be applied, based on a set value Pr of a contact pressure to be applied to the lower surface of the second ring-shaped member due to contact with the polishing pad at the time of polishing, and bringing the lower surface of the wafer into contact with the polishing pad to conduct polishing.
    Type: Application
    Filed: July 1, 2021
    Publication date: October 19, 2023
    Applicant: SUMCO CORPORATION
    Inventors: Hiroki OTA, Yuki NAKANO
  • Patent number: 11731184
    Abstract: Provided is a rolling straightening machine which enables outer-diameter-reducing rolling and straightening rolling of a pipe or tube material or a bar material at high speed with high accuracy. The rolling straightening machine includes at least two rollers arranged across a pass line of a pipe or tube material or a bar material, the at least two rollers having a gap therebetween, the gap being defined by an outer-diameter-reducing rolling portion having a diameter reduced from an upstream side toward a downstream side in the rolling straightening machine and a straightening rolling portion continuous from an exit side of the outer-diameter-reducing rolling portion toward a downstream side of the rolling straightening machine, the rollers having shapes which are symmetrical about the pass line in the outer-diameter-reducing rolling portion, and in the straightening rolling portion, asymmetrical to the pass line in the outer-diameter-reducing rolling portion.
    Type: Grant
    Filed: March 4, 2020
    Date of Patent: August 22, 2023
    Assignee: JFE STEEL CORPORATION
    Inventors: Shunsuke Sasaki, Tatsuro Katsumura, Hiroki Ota
  • Publication number: 20230243657
    Abstract: An object of the present invention is to provide a vehicle control device and a host vehicle position estimation method capable of appropriately learning a correction amount of a host vehicle position estimated based on a global navigation satellite system (GNSS) according to an environmental change.
    Type: Application
    Filed: February 1, 2021
    Publication date: August 3, 2023
    Applicant: Hitachi Astemo, Ltd.
    Inventors: Masahiro KIYOHARA, Takeshi OGATA, Hiroki OTA, Shinichi AMAYA
  • Publication number: 20230109372
    Abstract: Provided is a vehicle control apparatus capable of preventing sudden deceleration of a vehicle to be controlled even in a case of failure to recognize a step condition at a predetermined position. The vehicle control apparatus 140 is mounted on the vehicle.
    Type: Application
    Filed: December 15, 2020
    Publication date: April 6, 2023
    Applicant: HITACHI ASTEMO, LTD.
    Inventor: Hiroki OTA
  • Patent number: 11566301
    Abstract: Provided herein is a dual-phase stainless steel having excellent carbon dioxide corrosion resistance, excellent sulfide stress corrosion cracking resistance, and excellent sulfide stress cracking resistance. The dual-phase stainless steel contains, in mass %, C: 0.03% or less, Si: 1.0% or less, Mn: 0.10 to 1.5%, P: 0.030% or less, S: 0.005% or less, Cr: 20.0 to 30.0%, Ni: 5.0 to 10.0%, Mo: 2.0 to 5.0%, Cu: 2.0 to 6.0%, N: less than 0.07%, and the balance Fe and unavoidable impurities, and has a structure that is 20 to 70% austenite phase, and 30 to 80% ferrite phase in terms of a volume fraction.
    Type: Grant
    Filed: August 22, 2017
    Date of Patent: January 31, 2023
    Assignee: JFE Steel Corporation
    Inventors: Yusuke Yoshimura, Hiroki Ota, Masao Yuga, Yuichi Kamo, Kenichiro Eguchi
  • Publication number: 20220388048
    Abstract: A rolling mill includes three or more rolling rolls aligned along a circumferential direction and arranged so each rotary shaft is skewed with respect to a pass line of a material to be rolled, wherein the material to be rolled made of a pipe or bar material passes between the rolling rolls while being rotated to undergo diameter reducing rolling. At least one rolling roll selected from the three or more rolling rolls is smaller in roll diameter than at least one other rolling roll. When at least one rolling roll having a relatively maximum roll diameter defined as a maximum diameter rolling roll and at least one rolling roll smaller in roll diameter than the maximum is defined as a small diameter rolling roll, the small diameter rolling roll has a roll diameter equal to or less than 90% of the roll diameter of the maximum diameter rolling roll.
    Type: Application
    Filed: September 29, 2020
    Publication date: December 8, 2022
    Applicant: JFE STEEL CORPORATION
    Inventors: Shunsuke SASAKI, Tatsuro KATSUMURA, Hiroki OTA
  • Patent number: 11492983
    Abstract: A transmission mechanism includes: an intermediate shaft secured to a support portion provided in a valve body of an electric throttle valve and disposed in parallel to a motor shaft and a valve shaft; and an intermediate gear rotatably disposed at the intermediate shaft, in which the intermediate gear has a first intermediate gear engaged with a motor gear secured to the motor shaft and a second intermediate gear engaged with a valve gear secured to the valve shaft, the first intermediate gear and the second intermediate gear are integrally configured to be aligned in an axial direction of the intermediate shaft, a hemispherical recessed portion recessed upward around an axial center of the intermediate shaft is formed at a lower end portion of the intermediate gear, and a projecting portion projecting upward in a hemispherical shape around the axial center of the intermediate shaft and supporting the recessed portion is formed in a surface of the support portion facing the recessed portion of the intermedia
    Type: Grant
    Filed: March 16, 2022
    Date of Patent: November 8, 2022
    Assignee: MIKUNI CORPORATION
    Inventors: Yuuhei Sanekata, Keigo Suzuki, Yuusaku Ide, Hiroki Ota
  • 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
  • Publication number: 20220298978
    Abstract: A transmission mechanism includes: an intermediate shaft secured to a support portion provided in a valve body of an electric throttle valve and disposed in parallel to a motor shaft and a valve shaft; and an intermediate gear rotatably disposed at the intermediate shaft, in which the intermediate gear has a first intermediate gear engaged with a motor gear secured to the motor shaft and a second intermediate gear engaged with a valve gear secured to the valve shaft, the first intermediate gear and the second intermediate gear are integrally configured to be aligned in an axial direction of the intermediate shaft, a hemispherical recessed portion recessed upward around an axial center of the intermediate shaft is formed at a lower end portion of the intermediate gear, and a projecting portion projecting upward in a hemispherical shape around the axial center of the intermediate shaft and supporting the recessed portion is formed in a surface of the support portion facing the recessed portion of the intermedia
    Type: Application
    Filed: March 16, 2022
    Publication date: September 22, 2022
    Applicant: MIKUNI CORPORATION
    Inventors: Yuuhei SANEKATA, Keigo SUZUKI, Yuusaku IDE, Hiroki OTA
  • Publication number: 20220193745
    Abstract: Provided is a rolling straightening machine which enables outer-diameter-reducing rolling and straightening rolling of a pipe or tube material or a bar material at high speed with high accuracy. The rolling straightening machine includes at least two rollers arranged across a pass line of a pipe or tube material or a bar material, the at least two rollers having a gap therebetween, the gap being defined by an outer-diameter-reducing rolling portion having a diameter reduced from an upstream side toward a downstream side in the rolling straightening machine and a straightening rolling portion continuous from an exit side of the outer-diameter-reducing rolling portion toward a downstream side of the rolling straightening machine, the rollers having shapes which are symmetrical about the pass line in the outer-diameter-reducing rolling portion, and in the straightening rolling portion, asymmetrical to the pass line in the outer-diameter-reducing rolling portion.
    Type: Application
    Filed: March 4, 2020
    Publication date: June 23, 2022
    Applicant: JFE STEEL CORPORATION
    Inventors: Shunsuke SASAKI, Tatsuro KATSUMURA, Hiroki OTA
  • Publication number: 20220161388
    Abstract: A polishing head includes a first ring-shaped member having an opening; a plate-shaped member that closes the opening on an upper side of the first ring-shaped member; a membrane that closes the opening on a lower side of the first ring-shaped member; a back pad adhered to a lower surface of the membrane; and a second ring-shaped member located below the back pad and having an opening that holds a polishing target workpiece. A space formed by closing the opening of the first ring-shaped member by the plate-shaped member and the membrane includes: a central region; and an outer peripheral region partitioned from the central region by a partition, and an inner peripheral edge region of the second ring-shaped member is located vertically below an outer peripheral edge of the outer peripheral region. A polishing apparatus includes the polishing head, and is used in a method of manufacturing a semiconductor wafer.
    Type: Application
    Filed: December 27, 2019
    Publication date: May 26, 2022
    Applicant: SUMCO CORPORATION
    Inventors: Yuki NAKANO, Ryoya TERAKAWA, Takayuki KIHARA, Hiroki OTA
  • 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
  • Publication number: 20220047192
    Abstract: A bilirubin concentration measurement system according to the present invention includes: a sensor device attachable to a subject; and a terminal device capable of wirelessly communicating with the sensor device. The sensor device includes: a light emitting element that emits blue light; a light emitting element that emits green light; a light detection element that detects reflected light that is the blue light having been incident on skin of the subject and been reflected, and detects reflected light that is the green light having been incident on the skin of the subject and been reflected; and a communication unit that wirelessly transmits information about intensities of the reflected light detected by the light detection element.
    Type: Application
    Filed: December 17, 2018
    Publication date: February 17, 2022
    Inventors: Hiroki OTA, Yutaka ISODA, Go INAMORI, Shuichi ITO, Azusa UOZUMI
  • Publication number: 20220018007
    Abstract: Provided herein is a duplex stainless steel seamless pipe and a method for manufacturing the same. The duplex stainless steel seamless pipe has a composition comprising, in mass %, C: 0.005 to 0.08%, Si: 0.01 to 1.0%, Mn: 0.01 to 10.0%, Cr: 20 to 35%, Ni: 1 to 15%, Mo: 0.5 to 6.0%, N: 0.150 to less than 0.400%, and one, two or more selected from Ti: 0.0001 to 0.3%, Al: 0.0001 to 0.3%, V: 0.005 to 1.5%, Nb: 0.005 to less than 1.5%, and the balance being Fe and incidental impurities. The duplex stainless steel seamless pipe contains N, Ti, Al, V, and Nb so as to satisfy the following formula (1). The duplex stainless steel seamless pipe has an axial tensile yield strength of 757 MPa or more, and a ratio of 0.85 to 1.15 as a fraction of axial compressive yield strength to axial tensile yield strength. 0.150>N?(1.58Ti+2.70Al+1.58V+1.44Nb) . . . ??(1), wherein N, Ti, Al, V, and Nb represent the content of each element in mass %.
    Type: Application
    Filed: November 1, 2019
    Publication date: January 20, 2022
    Applicant: JFE Steel Corporation
    Inventors: Shunsuke Sasaki, Tatsuro Katsumura, Hiroki Ota, Kazuki Fujimura, Masao Yuga