Patents by Inventor Hiroaki Ishikawa

Hiroaki Ishikawa 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: 10490736
    Abstract: A magnetic memory according to an embodiment includes: first to third terminals; a nonmagnetic conductive layer including first to third regions, the second region being disposed between the first and third regions, the first region being electrically connected to the first terminal, and the third region being electrically connected to the second terminal; and a magnetoresistive element disposed to correspond to the second region, including a first magnetic layer electrically connected to the third terminal, a second magnetic layer disposed between the first magnetic layer and the second region, and a nonmagnetic layer disposed between the first and second magnetic layers, the conductive layer including at least one of an alloy including Ir and Ta, an alloy including Ir and V, an alloy including Au and V, an alloy including Au and Nb, or an alloy including Pt and V, each of the alloys having an fcc structure.
    Type: Grant
    Filed: March 6, 2018
    Date of Patent: November 26, 2019
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Yoshiaki Saito, Tomoaki Inokuchi, Yushi Kato, Soichi Oikawa, Mizue Ishikawa, Hiroaki Yoda
  • Patent number: 10471651
    Abstract: A repair system includes a 3D-object repair apparatus and a repair-data providing apparatus. The repair-data providing apparatus includes: a damaged-part determining part to determine a location of the damaged part of the object to be repaired by comparing 3D-object data of the object to be repaired obtained by the scanner and 3D-object data of an original of the object to be repaired; a mode selecting part to select a repair mode from among a first repair mode of repairing only the damaged part of the object to be repaired and a second repair mode of repairing a range broader than the damaged part of the object to be repaired, the range including the damaged part, in accordance with a condition of a damaged surface of the object to be repaired; and a repair-data generating part to generate the 3D-object repair data corresponding to the selected repair mode.
    Type: Grant
    Filed: June 3, 2015
    Date of Patent: November 12, 2019
    Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
    Inventors: Hiroyuki Yagita, Yui Okada, Hiroaki Ishikawa, Jun Hyodo, Hiroyuki Esashi
  • Patent number: 10472804
    Abstract: A hydraulic control system achieves a reduction in meter-out pressure loss in accordance with variation of a negative load acting on a hydraulic actuator. A hydraulic fluid discharged from the actuator flows through meter-out flow lines having variable restrictors. A load sensor detects the magnitude of a negative load applied to the actuator by an external force in the same direction as the operating direction of the actuator. A control device reduces the sum total of the opening areas of the variable restrictors in accordance with an increase in the magnitude of the negative load detected by the load sensor and the operation amount detected by the operation amount sensor when the load abnormality sensor does not detect any abnormality. When an abnormality is detected, it reduces the sum total of the opening areas to a predetermined value in accordance with the operation amount detected by the operation amount sensor.
    Type: Grant
    Filed: May 26, 2016
    Date of Patent: November 12, 2019
    Assignee: Hitachi Construction Machinery Co., Ltd.
    Inventors: Ryohei Yamashita, Shinya Imura, Kouji Ishikawa, Hidekazu Moriki, Hiroaki Amano
  • Patent number: 10453513
    Abstract: According to one embodiment, a magnetic memory device includes a conductive layer, a first magnetic layer, a second magnetic layer, a first nonmagnetic layer, and a controller. The conductive layer includes first and second portions, and a third portion between the first and second portions. The conductive layer includes a first metal and boron. The first magnetic layer is separated from the third portion in a first direction crossing a second direction. The second magnetic layer is provided between the third portion and the first magnetic layer. The first nonmagnetic layer is provided between the first and second magnetic layers. The controller is electrically connected to the first and second portions. The controller supplies a current to the conductive layer. The first metal includes at least one selected from the group consisting of La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu.
    Type: Grant
    Filed: March 12, 2018
    Date of Patent: October 22, 2019
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yushi Kato, Yoshiaki Saito, Mizue Ishikawa, Soichi Oikawa, Hiroaki Yoda
  • Patent number: 10374150
    Abstract: According to one embodiment, a magnetic memory device includes a conductive layer, first and second magnetic layers, a first nonmagnetic layer and a controller. The conductive layer includes first and second portions, and a third portion positioned between the first and second portions. The conductive layer includes a first metal. The first magnetic layer is separated from the third portion. The second magnetic layer is provided between the third portion and the first magnetic layer. The first nonmagnetic layer is provided between the first and second magnetic layers. The controller is electrically connected to the first and second portions. The second magnetic layer has first and second lattice lengths. The first lattice length is longer than the second lattice length. The controller implements a first operation of supplying a first current to the conductive layer, and a second operation of supplying a second current to the conductive layer.
    Type: Grant
    Filed: February 26, 2018
    Date of Patent: August 6, 2019
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yushi Kato, Yoshiaki Saito, Soichi Oikawa, Mizue Ishikawa, Hiroaki Yoda
  • Patent number: 10364550
    Abstract: Disclosed is a hydraulic drive system capable of improving the fuel efficiency of a work machine by reducing the pressure loss and drag loss of a hydraulic pump. There are provided an electric motor M; a third pump P3 driven by the electric motor; a third pump hydraulic line L3 to which the delivered hydraulic fluid from the third pump is supplied; a third directional control valve V4 provided in the third pump hydraulic line, switch-operated by an arm operation device 19, and controlling the flow rate of the hydraulic fluid supplied to the arm cylinder 8 from the third hydraulic pump; and a controller 18 drive-controlling the electric motor, wherein the controller drives the third pump by the electric motor when a swing/arm combined operation is detected by pilot pressure sensors S6, S7, S10, S11.
    Type: Grant
    Filed: February 22, 2016
    Date of Patent: July 30, 2019
    Assignee: Hitachi Construction Machinery Co., Ltd.
    Inventors: Hiroaki Amano, Kouji Ishikawa, Shinya Imura, Hidekazu Moriki, Ryohei Yamashita, Seiji Hijikata
  • Patent number: 10360960
    Abstract: According to one embodiment, a magnetic memory device includes a conductive layer, a first magnetic layer, a second magnetic layer, a first nonmagnetic layer, and a controller. The conductive layer includes a first portion, a second portion, and a third portion between the first and second portions. The first magnetic layer is separated from the third portion. The second magnetic layer is provided between the third portion and the first magnetic layer. The first nonmagnetic layer is provided between the first and second magnetic layers. The controller is electrically connected to the first and second portions. The third portion includes a first region and a second region. The second region is provided between the first region and the second magnetic layer. The controller implements a first operation of supplying a first current to the conductive layer, and a second operation of supplying a second current to the conductive layer.
    Type: Grant
    Filed: September 11, 2017
    Date of Patent: July 23, 2019
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yushi Kato, Soichi Oikawa, Mizue Ishikawa, Yoshiaki Saito, Hiroaki Yoda
  • Publication number: 20190185656
    Abstract: A curable composition contains a resin containing a curable group, a colorant, a polymerization inhibitor, and a polymerization initiator. A manufacturing method of the curable composition includes a colorant dispersing step of mixing together the resin containing a curable group, the colorant, and the polymerization inhibitor and a mixing step of mixing together the colorant dispersion and the polymerization initiator so as to obtain the curable composition. A cured film is obtained by curing the curable composition. A color filter, a solid-state imaging element, and an infrared sensor have the cured film. A manufacturing method of the cured film includes a curable composition layer-forming step, an exposure step, and a development step.
    Type: Application
    Filed: February 22, 2019
    Publication date: June 20, 2019
    Applicant: FUJIFILM Corporation
    Inventors: Michihiro Ogawa, Yutaro Fukami, Junichi Ito, Yushi Kaneko, Hiroaki Idei, Daisuke Hamada, Tatsuo Ishikawa
  • Patent number: 10138758
    Abstract: The quatro generation system of the present invention includes: a power generation engine driven by fuel gas; an exhaust-heat boiler configured to utilize energy of exhaust gas discharged from the power generation engine to produce steam from boiler water; a boiler-water circulation device configured to supply the steam produced by the exhaust-heat boiler to a steam-energy recovery unit, and to return condensed water of the steam to the exhaust-heat boiler after the steam-energy recovery unit recovers energy of the steam; a condensation economizer configured to utilize condensation latent heat of exhaust gas discharged from the exhaust-heat boiler to heat a heat medium; and a heat-medium circulation device configured to supply the heat medium heated by the condensation economizer to a thermal-energy recovery unit, and to return the heat medium to the condensation economizer after the thermal-energy recovery unit recovers energy of the heat medium.
    Type: Grant
    Filed: September 4, 2014
    Date of Patent: November 27, 2018
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Hiroyuki Yagita, Kouji Abe, Takao Koide, Toshihide Noguchi, Tomoaki Nakai, Hiroaki Ishikawa, Hiroyuki Esashi, Jun Hyodo
  • Patent number: 10107169
    Abstract: An exhaust gas cleaning apparatus for an internal combustion engine that is mounted on a vehicle includes an exhaust passage that is connected to the internal combustion engine, a filter that collects particulate matter in exhaust gas, an NOx reducing catalyst, a dosing valve that injects urea solution into the exhaust passage, and a controller that performs a filter regeneration process in response to a request for the filter regeneration process. The filter regeneration process includes a first filter regeneration process that is performed during an idle operation of the internal combustion engine and a second filter regeneration process that is performed with the vehicle traveling. When the first filter regeneration process has been performed for a predetermined number of times without being intervened by the second filter regeneration process, the controller does not perform the first filter regeneration process even when a request for the filter regeneration process is made.
    Type: Grant
    Filed: October 26, 2016
    Date of Patent: October 23, 2018
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Masanori Hatta, Hiroaki Ishikawa
  • Patent number: 10065375
    Abstract: An additive manufacturing system includes an additive manufacturing apparatus and a modeling-data providing apparatus. The modeling-data providing apparatus includes: a dividing unit configured to divide modeling data into n packets of transmission data; and a data transmitting unit configured to transmit the n packets of the transmission data to the additive manufacturing apparatus in series. The data transmitting unit is configured to confirm receipt, by a deletion-signal receiving unit, of a deletion signal indicating deletion of an ith packet of the n packets of the transmission data, and subsequently transmit an i+1th packet of the n packets of the transmission data to the additive manufacturing apparatus.
    Type: Grant
    Filed: June 3, 2015
    Date of Patent: September 4, 2018
    Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
    Inventors: Hiroyuki Yagita, Yui Okada, Hiroaki Ishikawa, Jun Hyodo, Hiroyuki Esashi
  • Patent number: 9970485
    Abstract: A holder support part, into which a holder main body part constituting a sensor holder is fitted, is provided to an upper position of two vertically adjacent positions of an axially inboard-side surface of a bottom plate part so as to project. A nut holding part, which holds a nut, into which is threaded a bolt for joining a sensor holder, is provided to a lower position of the two vertically adjacent positions. The holder support part and the nut holding part are apart from each other. The holder support part is configured as a notched cylinder shape having a discontinuous part at a lower part. An upper surface of the nut holding part is configured as a convex curved surface of which a part facing the discontinuous part is positioned at the uppermost part.
    Type: Grant
    Filed: February 8, 2016
    Date of Patent: May 15, 2018
    Assignee: NSK LTD.
    Inventors: Akinobu Takayama, Yukihisa Takayama, Hiroaki Ishikawa
  • Publication number: 20180003238
    Abstract: A holder support part, into which a holder main body part constituting a sensor holder is fitted, is provided to an upper position of two vertically adjacent positions of an axially inboard-side surface of a bottom plate part so as to project. A nut holding part, which holds a nut, into which is threaded a bolt for joining a sensor holder, is provided to a lower position of the two vertically adjacent positions. The holder support part and the nut holding part are apart from each other. The holder support part is configured as a notched cylinder shape having a discontinuous part at a lower part. An upper surface of the nut holding part is configured as a convex curved surface of which a part facing the discontinuous part is positioned at the uppermost part.
    Type: Application
    Filed: February 8, 2016
    Publication date: January 4, 2018
    Applicant: NSK LTD.
    Inventors: Akinobu TAKAYAMA, Yukihisa TAKAYAMA, Hiroaki ISHIKAWA
  • Publication number: 20170176978
    Abstract: A repair system includes a 3D-object repair apparatus and a repair-data providing apparatus. The repair-data providing apparatus includes: a damaged-part determining part to determine a location of the damaged part of the object to be repaired by comparing 3D-object data of the object to be repaired obtained by the scanner and 3D-object data of an original of the object to be repaired; a mode selecting part to select a repair mode from among a first repair mode of repairing only the damaged part of the object to be repaired and a second repair mode of repairing a range broader than the damaged part of the object to be repaired, the range including the damaged part, in accordance with a condition of a damaged surface of the object to be repaired; and a repair-data generating part to generate the 3D-object repair data corresponding to the selected repair mode.
    Type: Application
    Filed: June 3, 2015
    Publication date: June 22, 2017
    Inventors: Hiroyuki YAGITA, Yui OKADA, Hiroaki ISHIKAWA, Jun HYODO, Hiroyuki ESASHI
  • Publication number: 20170144380
    Abstract: An additive manufacturing system includes an additive manufacturing apparatus and a modeling-data providing apparatus. The modeling-data providing apparatus includes: a dividing unit configured to divide modeling data into n packets of transmission data; and a data transmitting unit configured to transmit the n packets of the transmission data to the additive manufacturing apparatus in series. The data transmitting unit is configured to confirm receipt, by a deletion-signal receiving unit, of a deletion signal indicating deletion of an ith packet of the n packets of the transmission data, and subsequently transmit an i+1th packet of the n packets of the transmission data to the additive manufacturing apparatus.
    Type: Application
    Filed: June 3, 2015
    Publication date: May 25, 2017
    Inventors: Hiroyuki YAGITA, Yui OKADA, Hiroaki ISHIKAWA, Jun HYODO, Hiroyuki ESASHI
  • Publication number: 20170122178
    Abstract: An exhaust gas cleaning apparatus for an internal combustion engine that is mounted on a vehicle includes an exhaust passage that is connected to the internal combustion engine, a filter that collects particulate matter in exhaust gas, an NOx reducing catalyst, a dosing valve that injects urea solution into the exhaust passage, and a controller that performs a filter regeneration process in response to a request for the filter regeneration process. The filter regeneration process includes a first filter regeneration process that is performed during an idle operation of the internal combustion engine and a second filter regeneration process that is performed with the vehicle traveling. When the first filter regeneration process has been performed for a predetermined number of times without being intervened by the second filter regeneration process, the controller does not perform the first filter regeneration process even when a request for the filter regeneration process is made.
    Type: Application
    Filed: October 26, 2016
    Publication date: May 4, 2017
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Masanori HATTA, Hiroaki ISHIKAWA
  • Publication number: 20170055956
    Abstract: An ultrasound diagnostic apparatus according to an embodiment includes image processing circuitry. The image processing circuitry acquires, based on a result of ultrasound scanning performed on a subject, blood flow information including a value that indicates a blood flow at each position within the subject and tissue property information including a value that indicates tissue properties at each position within the subject. The image processing circuitry generates a first image in which a difference in value in the blood flow information is represented by at least a difference in hue and a second image in which a difference in value in the tissue property information is represented by a difference other than the difference in hue. The image processing circuitry generates a combined image by combining the first image and the second image.
    Type: Application
    Filed: August 23, 2016
    Publication date: March 2, 2017
    Applicant: Toshiba Medical Systems Corporation
    Inventors: Ryota OSUMI, Tomohisa Imamura, Kuramitsu Nishihara, Hiroki Yoshiara, Hiroaki Ishikawa, Yuko Takada
  • Patent number: 9544748
    Abstract: A tsunami monitoring system includes a transmitting antenna configured to radiate a transmission signal to detect a tsunami as a radio wave toward a sea, and a receiving antenna configured to receive reflected waves reflected by the tsunami as a receiving signal. The tsunami monitoring system includes a signal generator circuit configured to generate the transmission signal having a predetermined frequency, a signal processor portion configured to generate a beat signal of a frequency difference between the transmission signal and the receiving signal, and a wave height estimator portion configured to divide a radio wave radiation region into a plurality of regions, calculate a flow velocity of a sea surface of the tsunami for each region on the basis of the beat signal, and estimate a wave height of the tsunami from a calculated flow velocity.
    Type: Grant
    Filed: January 23, 2014
    Date of Patent: January 10, 2017
    Assignee: Mitsubishi Electric Corporation
    Inventors: Hiroaki Ishikawa, Takashi Kawai, Takafumi Nagano, Taizo Isono
  • Patent number: 9428264
    Abstract: Provided is a nose for a supersonic flying object, which has a natural laminar flow nose shape capable of suppressing laminar-turbulent transition and drastically reducing a frictional drag. The nose for a supersonic flying object has a low resistive body shape symmetrical about a central axis as a base shape, wherein the base shape is approximately a cone shape having a linear, simple convex curve, or simple concave curve generatrix and a deformation element having a wavy shape is added to the base shape.
    Type: Grant
    Filed: October 21, 2011
    Date of Patent: August 30, 2016
    Assignee: JAPAN AEROSPACE EXPLORATION AGENCY
    Inventors: Naoko Tokugawa, Taro Kawai, Ayako Tozuka, Yoshine Ueda, Hiroaki Ishikawa
  • Publication number: 20160215656
    Abstract: The quatro generation system of the present invention includes: a power generation engine driven by fuel gas; an exhaust-heat boiler configured to utilize energy of exhaust gas discharged from the power generation engine to produce steam from boiler water; a boiler-water circulation device configured to supply the steam produced by the exhaust-heat boiler to a steam-energy recovery unit, and to return condensed water of the steam to the exhaust-heat boiler after the steam-energy recovery unit recovers energy of the steam; a condensation economizer configured to utilize condensation latent heat of exhaust gas discharged from the exhaust-heat boiler to heat a heat medium; and a heat-medium circulation device configured to supply the heat medium heated by the condensation economizer to a thermal-energy recovery unit, and to return the heat medium to the condensation economizer after the thermal-energy recovery unit recovers energy of the heat medium.
    Type: Application
    Filed: September 4, 2014
    Publication date: July 28, 2016
    Inventors: Hiroyuki YAGITA, Kouji ABE, Takao KOIDE, Toshihide NOGUCHI, Tomoaki NAKAI, Hiroaki ISHIKAWA, Hiroyuki ESASHI, Jun HYODO