Patents by Inventor Shinya Kasai

Shinya Kasai 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: 11004465
    Abstract: An object of the present invention is to provide a Magneto-Resistance (MR) element showing a high Magneto-Resistance (MR) ratio and having a suitable Resistance-Area (RA) for device applications. The MR element of the present invention has a laminated structure including a first ferromagnetic layer 16, a non-magnetic layer 18, and a second ferromagnetic layer 20 on a substrate 10, wherein the first ferromagnetic layer 16 includes a Heusler alloy, the second ferromagnetic layer 20 includes a Heusler alloy, the non-magnetic layer 18 includes a I-III-VI2 chalcopyrite-type compound semiconductor, and the non-magnetic layer 18 has a thickness of 0.5 to 3 nm, and wherein the MR element shows a Magneto-Resistance (MR) change of 40% or more, and has a resistance-area (RA) of 0.1 [??m2] or more and 3 [??m2] or less.
    Type: Grant
    Filed: June 23, 2017
    Date of Patent: May 11, 2021
    Assignee: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Shinya Kasai, Yukiko Takahashi, Pohan Cheng, Ikhtiar, Seiji Mitani, Tadakatsu Ohkubo, Kazuhiro Hono
  • Publication number: 20210061356
    Abstract: A steering angular acceleration becomes steep in a transition curve section, and sudden control is required for steering follow-up control, so that there is a problem that a steering wheel behavior at the time of steering control is suddenly changed. In the straight section 710a, the steering angle does not change and remains at zero. In a transition curve section 711a (steering angle increasing section), the steering angle is corrected to a section 702 where the steering angle exceeds a target steering angle after a section 701 where the steering angle is below the target steering angle. In the arc section 712, the steering angle maintains a constant angle. In a transition curve section 711b (steering angle decreasing section), the steering angle is corrected to a section 704 where a steering angle is below a target steering angle after a section 703 where the steering angle exceeds the target steering angle. In the straight section 710b, the steering angle does not change and remains at zero.
    Type: Application
    Filed: December 11, 2018
    Publication date: March 4, 2021
    Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Shinya KASAI, Masato IMAI, Takashi TSUTSUI
  • Publication number: 20200398829
    Abstract: Unfortunately, even when a new area, which cannot be recognized from the parking start position, is detected in the surrounding area as the vehicle travels on the parking route, the new area cannot be used effectively as the parking route. In step S304, when there is an area for extending the parking route in the newly detected area, the route is determined to be extensible. In step S305, it is determined whether the vehicle can be parked with one turnabout without extending the route, and when it is determined that the vehicle cannot be parked with one turnabout, the process proceeds to step S307 to perform the route extension process. When the posture of the vehicle at the turning point does not exceed a predetermined value in step S306, the process also proceeds to step S307.
    Type: Application
    Filed: February 13, 2019
    Publication date: December 24, 2020
    Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Shinya KASAI, Masashi SEIMIYA, Masato IMAI, Naoyuki TASHIRO
  • Patent number: 10578131
    Abstract: A spring retainer includes a locking member which locks one end side of the piston spring, and a rod-shaped member (82) of which one end is in contact with the locking member to restrict a length of the piston spring and the other end is fixed to the piston (11), and the rod-shaped member (82) is installed in a concave portion (140) of the piston (11), and the concave portion (140) has a protruding portion (142), which is extruded by plastic deformation toward a radial direction of the concave portion (140) and is formed of the same member as the opening circumferential edge portion (141), in the vicinity of the opening circumferential edge portion (141).
    Type: Grant
    Filed: June 30, 2016
    Date of Patent: March 3, 2020
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventor: Shinya Kasai
  • Publication number: 20200055522
    Abstract: According to the invention, in a management part that manages a state of a function module, a control part itself has expandability and diversity in order to guarantee the expandability and diversity of the entire platform.
    Type: Application
    Filed: July 19, 2018
    Publication date: February 20, 2020
    Applicant: Hitachi Automotive Systems, Ltd.
    Inventors: Shinya KASAI, Masato IMAI, Takashi TSUTSUI
  • Publication number: 20200044144
    Abstract: According to an embodiment, a magnetic tunnel junction includes a tunnel barrier layer provided between a first magnetic layer and a second magnetic layer. The tunnel barrier layer is a crystal body made of a stacked structure of a first insulating layer and a second insulating layer. The crystal body is oriented. The first insulating layer is made of an oxide of Mg1-xXx (0?x?0.15). X includes at least one element selected from the group consisting of Al and Ti. The second insulating layer is made of an oxide of an alloy including at least two elements selected from the group consisting of Mg, Al, Zn, and Li. Both the first magnetic layer and the second magnetic layer are made of an alloy including B and at least one element selected from the group consisting of Co and Fe.
    Type: Application
    Filed: June 8, 2018
    Publication date: February 6, 2020
    Applicant: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Hiroaki SUKEGAWA, Ikhtiar ., Shinya KASAI, Kazuhiro HONO, Xiandong XU
  • Publication number: 20190352964
    Abstract: A motor assembly includes an output shaft disposed along a central axis extending in one direction, a motor that rotates the output shaft, a circuit board electrically connected to the motor, a power supply that supplies power to the motor and the circuit board, and a case having a tubular shape that extends in an axial direction and accommodates the motor, the circuit board, and the power supply A substrate surface of the circuit board and the power supply are disposed to face each other in a predetermined direction that is orthogonal or substantially orthogonal to the axial direction.
    Type: Application
    Filed: January 17, 2018
    Publication date: November 21, 2019
    Inventor: Shinya KASAI
  • Publication number: 20190237099
    Abstract: An object of the present invention is to provide a Magneto-Resistance (MR) element showing a high Magneto-Resistance (MR) ratio and having a suitable Resistance-Area (RA) for device applications. The MR element of the present invention has a laminated structure including a first ferromagnetic layer 16, a non-magnetic layer 18, and a second ferromagnetic layer 20 on a substrate 10, wherein the first ferromagnetic layer 16 includes a Heusler alloy, the second ferromagnetic layer 20 includes a Heusler alloy, the non-magnetic layer 18 includes a I-III-VI2 chalcopyrite-type compound semiconductor, and the non-magnetic layer 18 has a thickness of 0.5 to 3 nm, and wherein the MR element shows a Magneto-Resistance (MR) change of 40% or more, and has a resistance-area (RA) of 0.1 [??m2] or more and 3 [??m2] or less.
    Type: Application
    Filed: June 23, 2017
    Publication date: August 1, 2019
    Applicant: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Shinya KASAI, Yukiko TAKAHASHI, Pohan CHENG, IKHTIAR, Seiji MITANI, Tadakatsu OHKUBO, Kazuhiro HONO
  • Patent number: 10351114
    Abstract: In a master cylinder, a piston seal provided in a circumferential groove includes an annular base section, an inner circumferential lip section protruding from an inner circumferential side of the base section to come into sliding contact with an outer circumferential surfaced of a piston, an outer circumferential lip section protruding from an outer circumferential side of the base section to abut the circumferential groove, and an intermediate protrusion section protruding from a portion between the inner circumferential lip section and the outer circumferential lip section of the base section to a position further forward than the outer circumferential lip section. At least one inner circumferential side groove extending in an axial direction and opened at a front end side of the intermediate protrusion section is formed in a surface of the inner circumferential lip section side of the intermediate protrusion section.
    Type: Grant
    Filed: August 4, 2014
    Date of Patent: July 16, 2019
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Hiroshi Owada, Shinya Kasai
  • Patent number: 10053076
    Abstract: A piston seal includes an annular base portion, an inner circumferential lip portion protruding from an inner circumferential side of the base portion to come in sliding contact with an outer circumferential surface of the piston, an outer circumferential lip portion protruding from an outer circumferential side of the base portion to come in contact with the circumferential groove of the cylinder main body, and an intermediate protrusion portion protruding from between the inner circumferential lip portion and the outer circumferential lip portion of the base portion further than the outer circumferential lip portion. A connecting portion is formed to extend in an axial direction of the piston seal and is configured to connect the inner circumferential lip portion and the intermediate protrusion portion is formed between the inner circumferential lip portion and the intermediate protrusion portion.
    Type: Grant
    Filed: March 27, 2013
    Date of Patent: August 21, 2018
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Seiko Tanabe, Shinya Kasai
  • Publication number: 20180187701
    Abstract: A spring retainer includes a locking member which locks one end side of the piston spring, and a rod-shaped member (82) of which one end is in contact with the locking member to restrict a length of the piston spring and the other end is fixed to the piston (11), and the rod-shaped member (82) is installed in a concave portion (140) of the piston (11), and the concave portion (140) has a protruding portion (142), which is extruded by plastic deformation toward a radial direction of the concave portion (140) and is formed of the same member as the opening circumferential edge portion (141), in the vicinity of the opening circumferential edge portion (141).
    Type: Application
    Filed: June 30, 2016
    Publication date: July 5, 2018
    Inventor: Shinya KASAI
  • Patent number: 9842636
    Abstract: Provided is a structure having a perpendicular magnetization film which is an (Mn1-xGax)4N1-y (0<x?0.5, 0<y<1) thin film having a nitrogen-deficient composition which is formed by controlling and introducing nitrogen N into an MnGa alloy or a thin film containing at least one of Ge, Zn, Sb, Ni, Ag, Sn, Pt, and Rh, instead of Ga. The perpendicular magnetization film exhibits a Curie temperature sufficiently higher than room temperature, has saturation magnetization smaller than that of existing materials, and is capable of being fabricated as a very flat film.
    Type: Grant
    Filed: April 21, 2016
    Date of Patent: December 12, 2017
    Assignees: NATIONAL INSTITUTE FOR MATERIALS SCIENCE, SAMSUNG ELECTRONICS COMPANY LIMITED
    Inventors: Hiroaki Sukegawa, Hwachol Lee, Kazuhiro Hono, Seiji Mitani, Tadakatsu Ohkubo, Jun Liu, Shinya Kasai, Kwangseok Kim
  • Publication number: 20160314825
    Abstract: Provided is a structure having a perpendicular magnetization film which is an (Mn1-x,Gax)4N1-y (0<x?0.5, 0<y<1) thin film having a nitrogen-deficient composition which is formed by controlling and introducing nitrogen N into an MnGa alloy or a thin film containing at least one of Ge, Zn, Sb, Ni, Ag, Sn, Pt, and Rh, instead of Ga. The perpendicular magnetization film exhibits a Curie temperature sufficiently higher than room temperature, has saturation magnetization smaller than that of existing materials, and is capable of being fabricated as a very flat film.
    Type: Application
    Filed: April 21, 2016
    Publication date: October 27, 2016
    Applicants: NATIONAL INSTITUTE FOR MATERIALS SCIENCE, SAMSUNG ELECTRONICS COMPANY LIMITED
    Inventors: Hiroaki SUKEGAWA, Hwachol LEE, Kazuhiro HONO, Seiji MITANI, Tadakatsu OHKUBO, Jun LIU, Shinya KASAI, Kwangseok KIM
  • Publication number: 20160200304
    Abstract: In a master cylinder, a piston seal provided in a circumferential groove includes an annular base section, an inner circumferential lip section protruding from an inner circumferential side of the base section to come into sliding contact with an outer circumferential surfaced of a piston, an outer circumferential lip section protruding from an outer circumferential side of the base section to abut the circumferential groove, and an intermediate protrusion section protruding from a portion between the inner circumferential lip section and the outer circumferential lip section of the base section to a position further forward than the outer circumferential lip section. At least one inner circumferential side groove extending in an axial direction and opened at a front end side of the intermediate protrusion section is formed in a surface of the inner circumferential lip section side of the intermediate protrusion section.
    Type: Application
    Filed: August 4, 2014
    Publication date: July 14, 2016
    Inventors: Hiroshi OWADA, Shinya KASAI
  • Patent number: 9336937
    Abstract: To realize a spintronics device with high performance, it is an object of the present invention to provide a Co2Fe-based Heusler alloy having a spin polarization larger than 0.65, and a high performance spintronics devices using the same. A Co2Fe(GaxGe1-x) Heusler alloy shows a spin polarization higher than 0.65 by a PCAR method in a region of 0.25<x<0.60 and it has a Curie temperature as high as 1288K. A CPP-GMR device that uses the Co2Fe(GaxGe1-x) Heusler alloy as an electrode exhibits the world's highest MR ratio, an STO device exhibits high output, and an NLSV device exhibits a high spin signal.
    Type: Grant
    Filed: July 3, 2013
    Date of Patent: May 10, 2016
    Assignee: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Yukiko Takahashi, Srinivasan Ananthakrishnan, Varaprasad Bollapragada, Rajanikanth Ammanabrolu, Jaivardhan Sinha, Masamitsu Hayashi, Takao Furubayashi, Shinya Kasai, Shigeyuki Hirayama, Seiji Mitani, Kazuhiro Hono
  • Publication number: 20150246664
    Abstract: A piston seal includes an annular base portion, an inner circumferential lip portion protruding from an inner circumferential side of the base portion to come in sliding contact with an outer circumferential surface of the piston, an outer circumferential lip portion protruding from an outer circumferential side of the base portion to come in contact with the circumferential groove of the cylinder main body, and an intermediate protrusion portion protruding from between the inner circumferential lip portion and the outer circumferential lip portion of the base portion further than the outer circumferential lip portion. A connecting portion is formed to extend in an axial direction of the piston seal and is configured to connect the inner circumferential lip portion and the intermediate protrusion portion is formed between the inner circumferential lip portion and the intermediate protrusion portion.
    Type: Application
    Filed: March 27, 2013
    Publication date: September 3, 2015
    Inventors: Seiko Tanabe, Shinya Kasai
  • Publication number: 20130302649
    Abstract: [Problem to be Solved] To realize a spintronics device with high performance, it is an object of the present invention to provide a Co2Fe-based Heusler alloy having a spin polarization larger than 0.65, and a high performance spintronics devices using the same. [Solution] A Co2Fe(GaxGe1-x) Heusler alloy shows a spin polarization higher than 0.65 by a PCAR method in a region of 0.25<x<0.60 and it has a Curie temperature as high as 1288K. A CPP-GMR device that uses the Co2Fe(GaxGe1-x) Heusler alloy as an electrode exhibits the world's highest MR ratio, an STO device exhibits high output, and an NLSV device exhibits a high spin signal.
    Type: Application
    Filed: July 3, 2013
    Publication date: November 14, 2013
    Inventors: Yukiko Takahashi, Srinivasan Ananthakrishnan, Varaprasad Bollapragada, Rajanikanth Ammanabrolu, Jaivardhan Sinha, Masamitsu Hayashi, Takao Furubayashi, Shinya Kasai, Shigeyuki Hirayama, Seiji Mitani, Kazuhiro Hono
  • Patent number: 7952915
    Abstract: A novel element capable of simply controlling an in-plane rotational motion of a core (a rising spot of a magnetization) generated in the center of a ferromagnetic dot made by forming a ferromagnetic material into a nanosized disk shape is provided. In addition, a binary information memory element using a core, including a ferromagnetic dot, made of a disk-shaped ferromagnetic material, with a magnetic structure of a magnetic vortex structure, and a current supplier for supplying an alternating current with a predetermined alternating current in the radial direction of the ferromagnetic dot is provided. In the case where the frequency of the current resonates with the intrinsic frequency of the ferromagnetic dot, it is possible to rotate the core in the plane of the dot. Since the core leaks a magnetic field, a microscopic actuator such as a motor can be obtained by using this element. Furthermore, supplying a current having a density not less than a predetermined value reverses the core.
    Type: Grant
    Filed: March 1, 2007
    Date of Patent: May 31, 2011
    Assignees: Kyoto University, The University of Electro-Communications, Osaka University, Tokyo Metropolitan University
    Inventors: Teruo Ono, Shinya Kasai, Kensuke Kobayashi, Yoshinobu Nakatani, Hiroshi Kohno, Gen Tatara
  • Publication number: 20100240552
    Abstract: The present invention provides a method for predicting the difference in drug sensitivity among individuals by using a genetic polymorphism of the POMC gene. Specifically, the present invention provides a method for evaluating drug sensitivity, comprising associating a genetic polymorphism of POMC gene with an individual drug sensitivity.
    Type: Application
    Filed: April 25, 2008
    Publication date: September 23, 2010
    Applicant: Tokyo Metropolitan Organization for Medical Research
    Inventors: Kazutaka Ikeda, Shinya Kasai, Masakazu Hayashida, Susumu Higuchi
  • Publication number: 20090180311
    Abstract: The present invention provides a novel element capable of simply controlling an in-plane rotational motion of a core (a rising spot of a magnetization) generated in the center of a ferromagnetic dot made by forming a ferromagnetic material into a nanosized disk shape. In addition, the present invention is achieved to provide a binary information memory element using a core, including a ferromagnetic dot, made of a disk-shaped ferromagnetic material, with a magnetic structure of a magnetic vortex structure, and a current supplier for supplying an alternating current with a predetermined alternating current in the radial direction of the ferromagnetic dot. In the case where the frequency of the current resonates with the intrinsic frequency of the ferromagnetic dot, it is possible to rotate the core in the plane of the dot. Since the core leaks a magnetic field, a microscopic actuator such as a motor can be obtained by using this element.
    Type: Application
    Filed: March 1, 2007
    Publication date: July 16, 2009
    Applicants: Kyoto University, The University of Electro-Communications, Osaka University, Tokyo Metropolitan University
    Inventors: Teruo Ono, Shinya Kasai, Kensuke Kobayashi, Yoshinobu Nakatani, Hiroshi Kohno, Gen Tatara