Patents by Inventor Yushi Kato

Yushi Kato 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: 10734053
    Abstract: According to one embodiment, a magnetic memory device includes a conductive member, a first magnetic layer, a second magnetic layer, and a first nonmagnetic layer. The conductive member includes a first layer. The first layer includes at least one selected from the group consisting of HfN having a NaCl structure, HfN having a fcc structure, and HfC having a NaCl structure. The first magnetic layer is separated from the first layer in a first direction. The second magnetic layer is provided between the first layer and the first magnetic layer. The first nonmagnetic layer is provided between the first magnetic layer and the second magnetic layer.
    Type: Grant
    Filed: February 11, 2019
    Date of Patent: August 4, 2020
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Mizue Ishikawa, Yushi Kato, Soichi Oikawa, Hiroaki Yoda
  • Publication number: 20200239260
    Abstract: A printing device includes a holder including: a first movable portion including a first support portion; a second movable portion including a second support portion; a pinion; a spring; an adjustment screw; a handle rotatable with the adjustment screw; and a stopper threadingly engaged with the adjustment screw. The first movable portion is movable in a first direction and a second direction opposite the first direction. The second movable portion is movable in the first direction and the second direction in accordance with movement of the first movable portion in the second direction and the first direction. The handle is positioned outside of a region defined between the first and second support portions positioned remotest from each other in the first direction. The stopper is in abutment with one of the first and second movable portions to restrict movements of the first and second movable portions.
    Type: Application
    Filed: December 20, 2019
    Publication date: July 30, 2020
    Inventors: Masashi Tanizaki, Yushi Kato
  • Patent number: 10718276
    Abstract: A failure diagnosis apparatus according to the present disclosure is applied to a variable compression ratio mechanism that can switch the compression ratio of an internal combustion engine between at least a first compression ratio and a second compression ratio lower than the first compression ratio. When the variable compression ratio mechanism is controlled so as to set the compression ratio of the internal combustion engine to the second compression ratio, the failure diagnosis apparatus advances the ignition timing of one cylinder to a knock inducing ignition timing more advanced than the MBT that does not lead to the occurrence of knock if the actual compression ratio of that cylinder is the second compression ratio but leads to the occurrence of knock if the actual compression ratio of that cylinder is the first compression ratio and diagnoses failure of the variable compression ratio mechanism on the basis of whether knock occurs or not.
    Type: Grant
    Filed: July 14, 2017
    Date of Patent: July 21, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHI
    Inventors: Shigehiro Sugihira, Naoto Kato, Ryutaro Moriguchi, Yushi Shibaike
  • Patent number: 10712741
    Abstract: A vehicle control system is provided to maintain an SOC level of the battery during autonomous operation of the vehicle. The control system is applied to a vehicle that can be operated autonomously by controlling an engine, a motor, a steering system, a brake system etc. autonomously by a controller, and the vehicle is allowed to coast by manipulating a clutch. During autonomous operation of the vehicle, a first coasting mode in which the engine is stopped and the clutch is disengaged is selected if the SOC level is higher than a threshold level, and a second coasting mode in which the engine is activated and the clutch is disengaged is selected if the SOC level is lower than the threshold level.
    Type: Grant
    Filed: October 27, 2017
    Date of Patent: July 14, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takahito Endo, Yasuhiro Oshiumi, Kensei Hata, Yasuyuki Kato, Yushi Seki, Katsuya Iwazaki, Hideaki Komada
  • Publication number: 20200168790
    Abstract: According to one embodiment, a magnetic memory device includes a first magnetic region, a first counter magnetic region, and a first nonmagnetic region provided between the first magnetic region and the first counter magnetic region. The first magnetic region includes a first magnetic film, a second magnetic film, and an intermediate film. The first magnetic film is provided between the second magnetic film and the first nonmagnetic region. The intermediate film includes Ru and is provided between the first magnetic film and the second magnetic film. A distance along a first direction between the first magnetic film and the second magnetic film is not less than 1.8 nm and not more than 2.2 nm. The first direction is from the first counter magnetic region toward the first magnetic region.
    Type: Application
    Filed: November 27, 2019
    Publication date: May 28, 2020
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Soichi OIKAWA, Yushi KATO, Hiroaki YODA
  • Publication number: 20200168260
    Abstract: According to one embodiment, a magnetic memory device includes a conductive member, a first magnetic layer, a first counter magnetic layer, and a first nonmagnetic layer. The conductive member includes a first portion, a second portion, and a third portion between the first portion and the second portion. The first counter magnetic layer is provided between the third portion and the first magnetic layer in a first direction crossing a second direction. The second direction is from the first portion toward the second portion. The first nonmagnetic layer is provided between the first magnetic layer and the first counter magnetic layer. The third portion includes a first position, and a second position between the first position and the first counter magnetic layer in the first direction. A second concentration of boron at the second position is lower than a first concentration of boron at the first position.
    Type: Application
    Filed: November 27, 2019
    Publication date: May 28, 2020
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Yushi KATO, Soichi OIKAWA, Hiroaki YODA
  • Patent number: 10576966
    Abstract: A control system for hybrid vehicles to properly select an operating mode during autonomous operation is provided. An operating mode of the hybrid vehicle is selected from a hybrid mode and an electric vehicle mode. A controller that is configured to: determine an existence of a passenger in a vehicle compartment; select the electric vehicle mode in a case that the hybrid vehicle is operated autonomously while carrying the passenger; and select the hybrid mode in a case that the hybrid vehicle is operated autonomously without carrying the passenger.
    Type: Grant
    Filed: August 23, 2017
    Date of Patent: March 3, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takahito Endo, Yasuhiro Oshiumi, Kensei Hata, Yasuyuki Kato, Yushi Seki, Katsuya Iwazaki, Akira Murakami
  • Patent number: 10580472
    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. The first magnetic layer is separated from the third portion. The first nonmagnetic layer is provided between the first magnetic layer and the second magnetic layer that is electrically connected with the third portion. The first nonmagnetic layer is curved. The controller is electrically connected to the first portion and the second portion. The controller implements a first operation and a second operation. The controller in the first operation supplies a first current to the conductive layer from the first portion toward the second portion. The controller in the second operation supplies a second current to the conductive layer from the second portion toward the first portion.
    Type: Grant
    Filed: November 20, 2018
    Date of Patent: March 3, 2020
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yuichi Ohsawa, Hiroaki Yoda, Altansargai Buyandalai, Satoshi Shirotori, Mariko Shimizu, Hideyuki Sugiyama, Yushi Kato
  • Publication number: 20200058338
    Abstract: According to one embodiment, a magnetic memory device includes a conductive member, a first magnetic layer, a second magnetic layer, and a first nonmagnetic layer. The conductive member includes a first layer. The first layer includes at least one selected from the group consisting of HfN having a NaCl structure, HfN having a fcc structure, and HfC having a NaCl structure. The first magnetic layer is separated from the first layer in a first direction. The second magnetic layer is provided between the first layer and the first magnetic layer. The first nonmagnetic layer is provided between the first magnetic layer and the second magnetic layer.
    Type: Application
    Filed: February 11, 2019
    Publication date: February 20, 2020
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Mizue ISHIKAWA, Yushi KATO, Soichi OIKAWA, Hiroaki YODA
  • Publication number: 20200020374
    Abstract: According to one embodiment, a magnetic memory device includes a first conductive layer, a first stacked body, and a controller. The first conductive layer includes a first region, a second region, and a third region between the first region and the second region. The first stacked body includes a first magnetic layer, a second magnetic layer provided between the third region and the first magnetic layer in a first direction crossing a second direction, and a first nonmagnetic layer provided between the first magnetic layer and the second magnetic layer. The second direction is from the first region toward the second region. The controller electrically is connected to the first region, the second region, and the first magnetic layer. The controller performs at least first to third operations. In the operations, the controller sets the first stacked body to first to third resistance state.
    Type: Application
    Filed: February 12, 2019
    Publication date: January 16, 2020
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Hiroaki YODA, Satoshi Takaya, Yuichi Ohsawa, Naoharu Shimomura, Katsuhiko Koui, Yushi Kato, Shinobu Fujita
  • 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: 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: 10392017
    Abstract: A vehicle control system is provided to allow an autonomous vehicle to promptly launch after picking up a passenger. A controller comprises a drive controller for controlling a drive motor, and electric power is supplied to the drive motor from a power source. A main switch is manipulated by the controller to selectively connect and disconnect the drive controller to/from the power source. The controller is configured to propel the vehicle autonomously to a pickup location to pick up a passenger, and to turn on the main switch if the passenger is detected within a predetermined area at the pickup location.
    Type: Grant
    Filed: August 28, 2017
    Date of Patent: August 27, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yushi Seki, Kensei Hata, Takahito Endo, Yasuhiro Oshiumi, Yasuyuki Kato, Katsuya Iwazaki
  • Patent number: 10395709
    Abstract: According to one embodiment, a magnetic memory device includes a conductive layer, a first magnetic layer, a first nonmagnetic layer, a second magnetic layer, a first conductive region, a first insulating region, and a controller. The conductive layer includes a first element. The conductive layer includes a first portion, a second portion, a third portion between the first portion and the second portion, and a fourth portion between the second portion and the third portion. The first conductive region includes a second element different from the first element. The first conductive region is provided between the second magnetic layer and the third portion. The first insulating region includes a first insulating substance. The first insulating substance is an insulating compound of the second element. The controller is electrically connected to the first portion and the second portion. The controller implements a first operation and a second operation.
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: August 27, 2019
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Mariko Shimizu, Yuichi Ohsawa, Hideyuki Sugiyama, Satoshi Shirotori, Altansargai Buyandalai, Yushi Kato
  • 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: 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
  • Patent number: 10343675
    Abstract: A vehicle control system to operate a vehicle autonomously with improved energy efficiency and ride quality is provided. A controller is configured to set a limit value of an operating point of an engine to reduce noises and vibrations. The operating point of the engine is restricted by the limit value within an acceptable region where an engine speed is higher than the limit value but an engine torque is lower than the limit value. The limit value is set to a first limit value when the vehicle is operated autonomously while carrying the passenger, and to a second limit value to expand the acceptable region when the vehicle is operated autonomously without carrying the passenger.
    Type: Grant
    Filed: August 24, 2017
    Date of Patent: July 9, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kensei Hata, Yasuhiro Oshiumi, Takahito Endo, Yasuyuki Kato, Yushi Seki, Katsuya Iwazaki, Akira Murakami
  • Patent number: 10340442
    Abstract: A magnetoresistive element according to an embodiment includes: a first magnetic layer; a second magnetic layer; and a first nonmagnetic layer disposed between the first magnetic layer and the second magnetic layer, wherein the second magnetic layer includes a magnetic material containing at least one element selected from a first group consisting of Mn, Fe, Co, and Ni; at least one element selected from a second group consisting of Ru, Rh, Pd, Ag, Os, Ir, Pt, and Au; and at least one element selected from a third group consisting of Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu.
    Type: Grant
    Filed: February 28, 2017
    Date of Patent: July 2, 2019
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Naoki Hase, Takao Ochiai, Tadaomi Daibou, Yushi Kato, Shumpei Omine, Junichi Ito
  • Patent number: 10305027
    Abstract: According to one embodiment, a magnetoresistive element includes a first magnetic layer, a second magnetic layer, and a first nonmagnetic layer. The first nonmagnetic layer is provided between the first magnetic layer and the second magnetic layer. The first nonmagnetic layer includes an oxide including an inverse-spinel structure.
    Type: Grant
    Filed: September 8, 2017
    Date of Patent: May 28, 2019
    Assignees: Kabushiki Kaisha Toshiba, NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Yushi Kato, Tadaomi Daibou, Yuuzo Kamiguchi, Naoharu Shimomura, Junichi Ito, Hiroaki Sukegawa, Mohamed Belmoubarik, Po-Han Cheng, Seiji Mitani, Tadakatsu Ohkubo, Kazuhiro Hono
  • Patent number: 10269866
    Abstract: A magnetoresistive element includes: a first ferromagnetic layer; a second ferromagnetic layer; and a first nonmagnetic layer disposed between the first ferromagnetic layer and the second ferromagnetic layer, the first ferromagnetic layer including (MnxGay)100-zPtz, the (MnxGay)100-zPtz having a tetragonal crystal structure, where 45 atm %?x?75 atm %, 25 atm %?y?55 atm %, x+y=100 atm %, and 0 atm %<z?7 atm %.
    Type: Grant
    Filed: January 29, 2016
    Date of Patent: April 23, 2019
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOHOKU UNIVERSITY
    Inventors: Yushi Kato, Tadaomi Daibou, Eiji Kitagawa, Takao Ochiai, Junichi Ito, Takahide Kubota, Shigemi Mizukami, Terunobu Miyazaki