Patents by Inventor Akihiro Yamazaki

Akihiro Yamazaki 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: 20240091905
    Abstract: An abrasive slurry regeneration method includes: collecting at least a used abrasive slurry containing an abrasive component and a constituent component of a polishing target object discharged from a polishing machine; inactivating a metal ion dissolved in the used abrasive slurry; dispersing the abrasive component and the constituent component of the polishing target object contained in the used abrasive slurry; separating the dispersed abrasive component and constituent component of the polishing target object to remove the constituent component of the polishing target object; and preparing a regenerated abrasive slurry containing the abrasive component.
    Type: Application
    Filed: August 24, 2023
    Publication date: March 21, 2024
    Inventors: Shin NAKAYAMA, Atsushi Takahashi, Kazufumi Yamazaki, Akihiro Maezawa, Sadatoshi Nishibuchi, Kenichi Tabata
  • Publication number: 20240092337
    Abstract: A vehicle control apparatus includes front-wheel and rear-wheel driving systems, and a control system. The front-wheel driving system includes a first travel motor mechanically coupled to a front wheel of a vehicle and a first accumulator electrically coupled to the first travel motor. The rear-wheel driving system includes a second travel motor mechanically coupled to a rear wheel of the vehicle and a second accumulator electrically coupled to the second travel motor. The control system includes one or more processors and one or more memories communicably coupled to the one or more processors, and controls the first and second travel motors. When a difference between an SOC of the first accumulator and an SOC of the second accumulator is greater than a threshold value, the one or more processors change a torque distribution ratio between the first and second travel motors from a reference distribution ratio.
    Type: Application
    Filed: September 13, 2023
    Publication date: March 21, 2024
    Inventors: Hiroshi KUSANO, Yoshinobu YAMAZAKI, Masami OGURI, Akihiro NABESHIMA, Yoshiyuki JIN, Takeshi YONEDA, Fumiya SATO, Keigo YAMADA, Takumi ARAKI, Shuntaro MIURA
  • Publication number: 20220219922
    Abstract: According to one embodiment, an unloading apparatus includes a first sucking portion sucking an upper surface of a package, a second sucking portion sucking a side surface of the package, a first moving device moving the first sucking portion and the second sucking portion, a rotation portion rotatably connecting the first and second sucking portions to the first moving device, and a processor configured to control the first moving device. In a state in which the upper and side surfaces of the package are sucked, the processor is configured to control the first moving device to move the first moving device upward along a direction intersecting the side surface of the package sucked by the second sucking portion or a surface obtained by virtually extending the side surface.
    Type: Application
    Filed: March 29, 2022
    Publication date: July 14, 2022
    Applicants: KABUSHIKI KAISHA TOSHIBA, Toshiba Infrastructure Systems & Solutions Corporation
    Inventors: Toshiaki AOYAGI, Masakazu ITOYA, Akihiro YAMAZAKI
  • Publication number: 20220056306
    Abstract: There are provided a surface protection coating agent, a cured product, and a laminate and a method of producing the same. The disclosure provides a surface protection coating agent including a polymer (A) including a structural unit 1 derived from long chain alkyl group-containing (meth)acrylic acid ester and a structural unit 2 derived from a hydroxy group-containing (meth)acrylic monomer and a polyisocyanate (B).
    Type: Application
    Filed: August 10, 2021
    Publication date: February 24, 2022
    Applicant: ARAKAWA CHEMICAL INDUSTRIES, LTD.
    Inventors: Yuki HASHIMOTO, Shotaro TOGAMI, Yoshiki ITO, Akihiro YAMAZAKI
  • Publication number: 20220041900
    Abstract: An objective is to provide a surface-protective PSA sheet capable of reducing adherend damage and well maintaining appearance, etc. The surface-protective PSA sheet capable of reducing adherend damage and well maintaining appearance, etc., comprises a surface layer, a resin substrate layer and a PSA layer, and has a multilayer structure with the resin substrate layer placed between the surface layer and the PSA layer, wherein the surface layer is a layer obtainable by curing a heat-curable composition comprising the following components: (a) a hydroxyl group-containing (meth)acrylic copolymer having a glass transition temperature of ?40° C. to 30° C.; (b) an allophanate polyisocyanate and/or a biuret polyisocyanate; and (c) a polysiloxane comprising a hydroxyl group-containing hydrocarbon group and/or polymer.
    Type: Application
    Filed: September 27, 2019
    Publication date: February 10, 2022
    Applicant: NITTO DENKO CORPORATION
    Inventors: Keita KUME, Yuki HASHIMOTO, Akihiro YAMAZAKI, Toru HIGASHIMOTO, Eiichi IMOTO, Yoshio NAKAGAWA, Shota TANAKA, Kenichi NISHIKAWA, Chihiro YOSHIDA
  • Patent number: 11220985
    Abstract: There is provided a hollow composite magnetic member obtained by partially reforming a hollow member which is formed of a ferromagnetic material containing Cr of 15 mass % or more and 18 mass % or less, in which the reformed portion includes an alloy containing Cr of 8 mass % or more and 18 mass % and Ni of 6.5 mass % or more and 50 mass % or less. Accordingly, a hollow composite magnetic member having a small width of the nonmagnetic portion and a fuel injection valve having the same can be provided.
    Type: Grant
    Filed: June 9, 2016
    Date of Patent: January 11, 2022
    Assignee: Hitachi Astemo, Ltd.
    Inventors: Shinya Okamoto, Xudong Zhang, Nobuaki Kobayashi, Takahiro Saito, Akihiro Yamazaki
  • Publication number: 20210301097
    Abstract: Provided is a barrier film including a gas barrier film and a primer layer disposed on one outermost surface of the barrier film and made of a cured product formed by using a composition for forming a primer layer, the composition containing a resin having a reactive carbon-carbon double bond, a resin not having a reactive carbon-carbon double bond but having a primary hydroxyl group, and a polyisocyanate compound, the primer layer having a surface wetting index of 40 dyn/cm or more.
    Type: Application
    Filed: February 6, 2020
    Publication date: September 30, 2021
    Applicants: TOPPAN PRINTING CO., LTD., ARAKAWA CHEMICAL INDUSTRIES, LTD.
    Inventors: Koji MURATA, Masayoshi SUZUTA, Akihiro YAMAZAKI, Toru HIGASHIMOTO
  • Patent number: 11074936
    Abstract: According to one embodiment, a magnetic disk device includes a magnetic disk, a magnetic head including a read head to read data from the magnetic disk and a write head to write data to the magnetic disk, and a controller configured to control read/write from/to the magnetic disk by the magnetic head. The magnetic head includes a thermal actuator configured to project a head surface of the magnetic head to a recording surface of the magnetic disk, and a detector configured to detect a gap between the head surface and the recording surface of the magnetic disk. The controller controls a degree of projection of the magnetic head to the recording surface by the thermal actuator corresponding to the gap detected by the detector during the read/write.
    Type: Grant
    Filed: July 27, 2020
    Date of Patent: July 27, 2021
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Electronic Devices & Storage Corporation
    Inventors: Toru Watanabe, Takao Furuhashi, Akihiro Yamazaki
  • Publication number: 20210193178
    Abstract: According to one embodiment, a magnetic disk device includes a magnetic disk, a magnetic head including a read head to read data from the magnetic disk and a write head to write data to the magnetic disk, and a controller configured to control read/write from/to the magnetic disk by the magnetic head. The magnetic head includes a thermal actuator configured to project a head surface of the magnetic head to a recording surface of the magnetic disk, and a detector configured to detect a gap between the head surface and the recording surface of the magnetic disk. The controller controls a degree of projection of the magnetic head to the recording surface by the thermal actuator corresponding to the gap detected by the detector during the read/write.
    Type: Application
    Filed: July 27, 2020
    Publication date: June 24, 2021
    Inventors: Toru Watanabe, Takao Furuhashi, Akihiro Yamazaki
  • Publication number: 20210148317
    Abstract: Disclosed is a fuel injection valve in which a movable core and a fixed core are enclosed in a cylindrical body. The cylindrical body has an annular groove formed therein, on an outer circumferential side of a region in which the movable core and the fixed core are opposed to each other, to define a thin portion of small wall thickness. In a cross section taken along a center axis of the fuel injection valve, the thin portion has curved line sections on both end sides thereof in a direction along the center axis such that the curved line sections respectively connect a bottom of the annular groove to side edges of the annular groove by curved lines. The curved line sections are provided over a range of larger dimension, from the respective side edges in the direction along the center axis, than a depth dimension of the annular groove.
    Type: Application
    Filed: March 26, 2018
    Publication date: May 20, 2021
    Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Shigeo KUBA, Akihiro YAMAZAKI, Takahiro SAITO, Masaki NAGAOKA
  • Publication number: 20210056997
    Abstract: According to one embodiment, a first decoding circuit calculates likelihood information by executing Viterbi decoding using a parameter for normalizing a branch metric on a signal sequence read from a magnetic disk. The second decoding circuit generates a first bit data sequence by iterative decoding using the likelihood information, and executes a check using a parity check matrix on the first bit data sequence. The control circuit causes the first decoding circuit and the second decoding circuit to repeatedly execute decoding, and updates the parameter in accordance with a check result obtained every time the decoding by the first decoding circuit and the second decoding circuit is executed. An acquisition circuit acquires numerical information corresponding to the number of bit errors included in the first bit data sequence obtained when the number of times of executions of the decoding is equal to a first value.
    Type: Application
    Filed: February 28, 2020
    Publication date: February 25, 2021
    Inventors: Manabu Kobayashi, Akihiro Yamazaki
  • Patent number: 10927803
    Abstract: In the present invention, two side-section side surfaces and each horizontal passage run along a fuel flow direction and have a linear section, and an end-section side surface formed between the two side-section side surfaces and forming an upstream-side end portion has a curved section connected to the side-section side surfaces and. When a fuel inlet and the horizontal passages are projected onto a plane perpendicular to a valve axial center, a projected line of the linear section of each of the horizontal passages extends to a place intersecting a projected line of the opening edge of the fuel inlet, and the upstream-side end portion of each of the horizontal passages extends toward the inside of the opening edge.
    Type: Grant
    Filed: February 16, 2017
    Date of Patent: February 23, 2021
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Takahiro Saito, Nobuaki Kobayashi, Akihiro Yamazaki, Eiji Tamura
  • Patent number: 10910012
    Abstract: According to one embodiment, a first decoding circuit calculates likelihood information by executing Viterbi decoding using a parameter for normalizing a branch metric on a signal sequence read from a magnetic disk. The second decoding circuit generates a first bit data sequence by iterative decoding using the likelihood information, and executes a check using a parity check matrix on the first bit data sequence. The control circuit causes the first decoding circuit and the second decoding circuit to repeatedly execute decoding, and updates the parameter in accordance with a check result obtained every time the decoding by the first decoding circuit and the second decoding circuit is executed. An acquisition circuit acquires numerical information corresponding to the number of bit errors included in the first bit data sequence obtained when the number of times of executions of the decoding is equal to a first value.
    Type: Grant
    Filed: February 28, 2020
    Date of Patent: February 2, 2021
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Electronic Devices & Storage Corporation
    Inventors: Manabu Kobayashi, Akihiro Yamazaki
  • Patent number: 10907601
    Abstract: A fuel injection valve includes a valve seat, a valve element, and a plurality of swirl fuel injection passages. The plurality of swirl fuel injection passages are divided into a first swirl fuel injection passage group that forms a first spray and a second swirl fuel injection passage group that forms a second spray that is oriented in a direction different from a first direction.
    Type: Grant
    Filed: January 20, 2017
    Date of Patent: February 2, 2021
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Mitsuhiro Matsuzawa, Kazuki Yoshimura, Eiji Ishii, Akihiro Yamazaki, Takahiro Saito, Nobuaki Kobayashi
  • Patent number: 10883465
    Abstract: A solenoid pipe is formed of a ferromagnetic material containing 15-18 mass % of Cr, an electromagnetic coil, and a valve body. The pipe includes a reform portion, having a composition in which a component of the ferromagnetic material is mixed with a component of a Ni-containing material. A ratio, e/d, of a maximum deformation, e, of an outer circumferential surface side of the reform portion of the pipe with respect to a thickness, d, of the pipe near the reform portion is 0.5 or less, and a ratio, c/d, of a maximum deformation, c, of an inner circumferential surface side of the reform portion of the pipe with respect to the thickness, d, of the pipe is 0.5 or less.
    Type: Grant
    Filed: December 24, 2015
    Date of Patent: January 5, 2021
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Shinya Okamoto, Xudong Zhang, Nobuaki Kobayashi, Takahiro Saito, Akihiro Yamazaki
  • Patent number: 10883461
    Abstract: Electromagnetic solenoid has movable core having end surface that is formed between inner circumferential surface and outer circumferential surface of movable core; and fixed core having end surface that is formed between inner circumferential surface and outer circumferential surface of fixed core and faces the end surface of movable core. Ring-shaped protruding portion is formed at least either one of the end surface of the movable core or the end surface of the fixed core. Protruding portion is provided at a position that is shifted to a radially inner circumferential side of the end surface. A length between apex and inner circumferential edge of protruding portion is shorter than a length between the apex and an outer circumferential edge of protruding portion.
    Type: Grant
    Filed: February 16, 2017
    Date of Patent: January 5, 2021
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Akihiro Yamazaki, Takahiro Saito, Nobuaki Kobayashi, Akiyasu Miyamoto, Yoshihito Yasukawa
  • Patent number: 10876508
    Abstract: Provided is a fuel injection valve which can be easily processed and can realize sufficient atomization while suppressing spreading of spray.
    Type: Grant
    Filed: September 1, 2017
    Date of Patent: December 29, 2020
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Mitsuhiro Matsuzawa, Kazuki Yoshimura, Eiji Ishii, Akihiro Yamazaki, Takahiro Saito, Nobuaki Kobayashi
  • Publication number: 20200400112
    Abstract: An object of the present invention is to provide a fuel injection valve that realizes atomization while suppressing spread of a spray. A fuel injection valve includes: a valve body and a valve seat that cooperate to open and close a fuel passage; a swirl imparting chamber that is arranged on a downstream side of an opening and closing portion of the fuel passage by the valve body and the valve seat, and imparts a swirling velocity to fuel; a communication passage arranged on an upstream side of the swirl imparting chamber and connected to the swirl imparting chamber; and fuel injection holes and that are open at a bottom surface of the swirl imparting chamber and injects fuel imparted with the swirling velocity in a swirl passage to an outside, the fuel injection holes and configured such that cross-sectional areas of the fuel injection holes and increase from the inlet to the outlet.
    Type: Application
    Filed: September 25, 2018
    Publication date: December 24, 2020
    Inventors: Hiroshi MUKAI, Mitsuhiro MATSUZAWA, Akihiro YAMAZAKI, Masaki NAGAOKA, Takahiro SAITO, Eiji ISHII, Taisuke SUGII, Kazuki YOSHIMURA
  • Patent number: 10724485
    Abstract: There is provided a manufacturing method of a hollow composite magnetic member having weakened magnetism in a portion of a ferromagnetic hollow member, the method includes: a step of forming a weak-magnetic area having weakened magnetism by melting and mixing a Ni-containing material and the hollow member by continuously supplying the Ni-containing material to a portion of the hollow member and heating the irradiation area having a line segment shape with the laser beam. Accordingly, since it is possible to prevent drop of a local portion of a hollow ferromagnetic pipe from being easily generated by a weak-magnetization treatment, to greatly reduce deformation generated by laser irradiation, and it becomes unnecessary to adjust the shielding gas pressure inside the pipe, the weak-magnetization treatment can be performed with higher efficiency and higher quality.
    Type: Grant
    Filed: June 9, 2016
    Date of Patent: July 28, 2020
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Xudong Zhang, Shinya Okamoto, Nobuaki Kobayashi, Takahiro Saito, Akihiro Yamazaki
  • Patent number: 10704516
    Abstract: The present invention includes a valve seat and a valve body that cooperatively open/close a fuel passage, a movable element having the valve body provided at one end part thereof and a movable iron core 27a provided at the other end part thereof, a fixed iron core 25 which faces the movable iron core 27a and which attracts the movable iron core 27a by applying a magnetic attraction force thereto, and a cylindrical member that includes thereinside the fixed iron core 25 and the movable iron core 27a. The fixed iron core 25 includes a reduced-diameter part 25m on an outer circumferential surface at the side facing the movable iron core 27a, and the movable iron core 27a includes a reduced-diameter part 27am on an outer circumferential surface at the side facing the fixed iron core 25.
    Type: Grant
    Filed: August 2, 2016
    Date of Patent: July 7, 2020
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Akihiro Yamazaki, Takahiro Saito, Nobuaki Kobayashi, Akiyasu Miyamoto