Patents by Inventor Kazumasa Ito

Kazumasa Ito 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: 11445949
    Abstract: A vital sign information processing system includes a sensor configured to be attached to a living body, and an information acquisition apparatus configured to acquire vital sign information of the living body through the sensor. A first memory is disposed in the sensor and stores first site information indicative of a site at which the sensor is to be used. A second memory is disposed in the information acquisition apparatus and stores second site information indicative of a site at which the information acquisition apparatus is to be used. A processor disposed in the information acquisition apparatus causes the information acquisition apparatus to perform notification when the first site information and the second site information are not matched.
    Type: Grant
    Filed: June 21, 2018
    Date of Patent: September 20, 2022
    Assignee: NIHON KOHDEN CORPORATION
    Inventors: Hideki Fujisaki, Kazumasa Ito, Naoki Kobayashi, Kumi Sugiyama, Tetsuo Suzuki, Masahiro Takeuchi, Jiongxun Chen
  • Publication number: 20220291772
    Abstract: An operation device according to the present invention has a touch-screen-type operation surface installed in a vehicle. A plurality of operation units having a convex shape or a concave shape associated with a plurality of components mounted in the vehicle, respectively, are formed at different positions on the touch-screen-type operation surface, respectively. The plurality of operation units are configured to accept an input touch operation as an operation instruction for the component associated with each of the plurality of operation units.
    Type: Application
    Filed: February 14, 2022
    Publication date: September 15, 2022
    Applicant: TOYO DENSO KABUSHIKI KAISHA
    Inventors: Masaki SAKURAI, Kazumasa ITO, Osamu KURIBARA
  • Patent number: 11411445
    Abstract: A permanent-magnet synchronous motor and an electric power steering device are driven by a first system including a first armature winding and a first control apparatus and by a second system including a second armature winding and a second control apparatus and are configured in such a way that if one system fails, driving by the one system is stopped but the driving is continued by the other system.
    Type: Grant
    Filed: September 7, 2017
    Date of Patent: August 9, 2022
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yuji Takizawa, Hiroko Ikeda, Kazumasa Ito, Shinichi Yamaguchi, Yu Hirotani, Satoru Akutsu
  • Patent number: 11398332
    Abstract: To obtain an electromagnetic actuator capable of improving a thrust force of a movable element. Provided is an electromagnetic actuator, including: a stator, which has a first surface at one end in an axial direction and a second surface at another end in the axial direction, and is made of a soft magnetic material having a tubular space formed in the axial direction; and a movable element, which is disposed in the tubular space, and is configured to move along the axial direction, wherein the stator includes: a coil; a core portion; and a protrusion portion, wherein the movable element includes a movable element core made of a soft magnetic material and a permanent magnet, and wherein at least one of a radially inner side and a radially outer side of the permanent magnet is covered by a movable element core.
    Type: Grant
    Filed: January 2, 2020
    Date of Patent: July 26, 2022
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Shoji Ishikawa, Toru Ogawa, Kazumasa Ito, Ryuichi Takiguchi
  • Publication number: 20220175318
    Abstract: A reusable portion includes a first connector and a light emitter. A disposable portion includes a support, a second connector and a light detector. The support has a translucent portion and adapted to be attached on a body of a subject. The second connector is supported by the support and configured to couple with the first connector. The light detector is supported by the support and configured to output a signal corresponding to an amount of light incident on the light detector. Under a condition that the first connector and the second connector are coupled, the light emitter is disposed so as to face the translucent portion, so that the first connector is enabled to detect the signal via the second connector.
    Type: Application
    Filed: March 16, 2020
    Publication date: June 9, 2022
    Applicant: NIHON KOHDEN CORPORATION
    Inventors: Hideki FUJISAKI, Kazumasa ITO, Yoshinori UEDA
  • Publication number: 20220085674
    Abstract: An object is to obtain a rotary electric machine, capable of reducing an eddy current loss which is caused in a magnet member provided in a stator. A rotor and a stator which is arranged to face to the rotor in a radial direction of the rotor are provided. The stator has a stator core, a stator coil, and a magnet member. The stator core has a core back and teethes, and the teethes protrude from the core back toward the rotor and are arranged along a circumferential direction. The stator coil is wound to each of the plurality of teethes, and is arranged in a slot formed between teethes lying next to each other in the circumferential direction. The magnet member is formed of a plurality of permanent magnets in each of the teethes.
    Type: Application
    Filed: March 27, 2019
    Publication date: March 17, 2022
    Applicant: Mitsubishi Electric Corporation
    Inventors: Takahiro MIZUTA, Kazumasa ITO, Takayuki YASUMORI
  • Patent number: 11018616
    Abstract: In the present electric driving apparatus, coils that constitute a first armature winding and coils that constitute a second armature winding are arranged so as to alternate in a circumferential direction, and a control portion is configured so as to perform single-system driving when one of a first system and a second system fails, the single-system driving stopping driving of an inverter of the system that has failed, and controlling driving of the inverter of the system that has not failed to supply inverter phase currents to an armature winding of the system that has not failed such that the inverter phase currents are set to a second upper limit value that is greater than a first upper limit value.
    Type: Grant
    Filed: January 26, 2017
    Date of Patent: May 25, 2021
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yu Hirotani, Kazumasa Ito, Yusuke Morita, Yuji Takizawa, Satoru Akutsu, Masafumi Okazaki
  • Patent number: 11013422
    Abstract: A blood pressure measurement apparatus includes a pressure controller that controls an internal pressure of a cuff, an oscillation acquiring section that acquires an oscillation corresponding to a pressure vibration, a pulse wave signal acquiring section that acquires a pulse wave signal of the subject from a probe, a processor, and a memory that stores instructions executable by the processor. In the apparatus, when the instructions are executed by the processor, the apparatus causes the pressure controller to inflate the internal pressure, determines whether a first condition is satisfied or not, determines whether a second condition is satisfied or not, and if the first condition and the second condition are satisfied, determines a mean blood pressure of the subject based on the internal pressure.
    Type: Grant
    Filed: September 14, 2018
    Date of Patent: May 25, 2021
    Assignee: NIHON KOHDEN CORPORATION
    Inventors: Yoshinori Ueda, Kazumasa Ito, Takashi Usuda
  • Publication number: 20210135513
    Abstract: A permanent-magnet synchronous motor and an electric power steering device are driven by a first system including a first armature winding and a first control apparatus and by a second system including a second armature winding and a second control apparatus and are configured in such a way that if one system fails, driving by the one system is stopped but the driving is continued by the other system.
    Type: Application
    Filed: September 7, 2017
    Publication date: May 6, 2021
    Applicant: Mitsubishi Electric Corporation
    Inventors: Yuji TAKIZAWA, Hiroko IKEDA, Kazumasa ITO, Shinich YAMAGUCHI, Yu HIROTANI, Satoru AKUTSU
  • Publication number: 20210075273
    Abstract: A stator includes a core back portion, a plurality of teeth extending inward in a radial direction of the stator from the core back portion, a first system coil portion and a second system coil portion wound on each of the teeth, and a magnetic interference reduction member provided between the first system coil portion and the second system coil portion to reduce magnetic interference between the first system coil portion and the second system coil portion. Further, the first system coil portion and the second system coil portion are connected to mutually different power supply sources, that is, the first system coil portion and the second system coil portion are each connected to a first system power supply source or a second system power supply source.
    Type: Application
    Filed: March 20, 2019
    Publication date: March 11, 2021
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Hiroko IKEDA, Shinichi YAMAGUCHI, Yuji TAKIZAWA, Yu HIROTANI, Kazumasa ITO
  • Patent number: 10910892
    Abstract: In the rotary electric machine according to the present invention, a plurality of core sheets include linked core sheets that include linking portions that protrude circumferentially from flange portions so as to link together tip portions of adjacent tooth portions, at least one sheet of the linked core sheets is formed such that a tooth tip portion shape is mirror-asymmetrical relative to a tooth central axis that passes through a circumferential center of the tooth portions, and a stator core is configured by laminating the linked core sheets such that circumferential positions of the linking portions are offset.
    Type: Grant
    Filed: April 22, 2015
    Date of Patent: February 2, 2021
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yu Hirotani, Kazumasa Ito, Yuji Takizawa, Satoru Akutsu, Hiroshi Aida, Shusuke Hori
  • Patent number: 10903724
    Abstract: The present invention provides a rotation angle detector capable of detecting a rotation angle of a rotor in the same manner as at normal time even when abnormality such as disconnection or a short circuit occurs, and capable of reducing the number of terminals. When one spatial order cycle of the output winding is an electrical angle of 360°, a phase difference between a first output winding and a second output winding and a phase difference between the second output winding and a third output winding are set at an electrical angle ?, and ??180°×n (n is an integer).
    Type: Grant
    Filed: December 28, 2015
    Date of Patent: January 26, 2021
    Assignee: Mitsubishi Electric Corporation
    Inventors: Hiroko Ikeda, Yusuke Morita, Kazumasa Ito, Yu Hirotani, Kodai Okazaki, Satoru Akutsu, Yuji Takizawa
  • Patent number: 10855121
    Abstract: Provided is a rotary electric machine capable of reducing an amount of leakage magnetic flux passing through connecting portions. A cutout portion is formed in the connecting portion so as to be located on a side closer to a magnetic air gap portion. The connecting portion has a slot portion-side thin connecting portion formed so as to be closer to a slot portion than the cutout portion. A slot projecting portion projecting from the slot portion toward the magnetic air gap portion with respect to the slot portion-side thin connecting portion is formed in a portion of the connecting portion that is shifted in the circumferential direction from a portion of the connecting portion in which the slot portion-side thin connecting portion is formed. The slot projecting portion is arranged on each of circumferential sides of the cutout portion.
    Type: Grant
    Filed: December 26, 2016
    Date of Patent: December 1, 2020
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yu Hirotani, Kazumasa Ito, Hiroko Ikeda, Kodai Okazaki, Shinichi Yamaguchi
  • Publication number: 20200363233
    Abstract: A redundant resolver is configured of a stator and a rotor that form a pair, wherein the rotor is a rotor with a shaft angle multiplier of Nx having Nx (Nx is a natural number) salient poles, the stator is such that n teeth T1 to Tn, where n is a natural number, are disposed sequentially in a circumferential direction, configuring M systems by being divided into M in the circumferential direction, and having an angle of 360/M degrees when angles of the teeth configuring one system are totaled, a one-phase excitation winding and a two-phase output winding are wound around each of the teeth T1 to Tn, excitation signals of the same frequency are applied by differing excitation circuits to the respective excitation windings, an output order per system is Nout (Nout is a natural number), and an abnormality is detected based on output signals of the M systems.
    Type: Application
    Filed: December 21, 2017
    Publication date: November 19, 2020
    Applicant: Mitsubishi Electric Corporation
    Inventors: Hiroko IKEDA, Yuji TAKIZAWA, Kazumasa ITO, Shinichi YAMAGUCHI, Toshihiro MATSUNAGA, Yosuke SUGINO
  • Patent number: 10835187
    Abstract: A physiological information display device includes: a display on which a numerical value corresponding to physiological information of a subject is displayed; a memory that stores a program; and a processor that executes the program to change a number of significant digits of the numerical value that is to be displayed on the display. In the device, the numerical value contains a first digit and a second digit, the first digit is always displayed in a first size and in a first area of the display, the number of significant digits is changed depending on whether the second digit is displayed in a second size and in a second area of the display or is not displayed, the second size being smaller than the first size, and a position and size of the first area are not changed even when the second digit is displayed.
    Type: Grant
    Filed: June 14, 2019
    Date of Patent: November 17, 2020
    Assignee: Nihon Kohden Corporation
    Inventors: Yoshinori Ueda, Kazumasa Ito, Hideki Fujisaki
  • Patent number: 10833549
    Abstract: In the armature winding of a rotary electric machine, in a series coil portion group, the numbers of turns of conducting wire in the coil portions that have an electrical angular phase difference of ?k that satisfies ?1<?k?m are different than the numbers of turns of conducting wire in the ?1 and ?m coil portions, and are also different than the numbers of turns of conducting wire in the coil portions that are adjacent to the ?k coil portions on two sides in a circumferential direction of the stator core, and phases of the ?k coil portions are also different than phases of each of the coil portions that are adjacent to the ?k coil portions on the two sides in the circumferential direction.
    Type: Grant
    Filed: February 26, 2016
    Date of Patent: November 10, 2020
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Kodai Okazaki, Masatsugu Nakano, Kazumasa Ito, Yu Hirotani, Hiroko Ikeda, Koji Kawamura
  • Patent number: 10778077
    Abstract: A synchronous linear motor, including: a stator including projecting poles including magnetic bodies; and a movable element arranged opposed to the projecting poles through a space. The movable element includes a core with a magnetic body, coils, and permanent magnets arrayed along a moving direction. The core includes core backs and teeth projecting from the core backs toward the projecting poles. The coils are at least wound around the teeth on both end sides in the moving direction. The permanent magnets are arranged at center portions of the teeth along a projecting direction of the teeth. A polarity of a magnetic pole of the permanent magnet is the same as a polarity of an opposed magnetic pole in an adjacent permanent magnet. The number of different shapes of the permanent magnets or the number of different magnetic characteristics of the permanent magnets is two or more.
    Type: Grant
    Filed: January 26, 2017
    Date of Patent: September 15, 2020
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Kenta Motoyoshi, Ariff Zaini, Kazumasa Ito, Toshinori Tanaka, Shinichi Yamaguchi
  • Patent number: 10734856
    Abstract: In a rotary electric machine, a conductive member surrounds a shaft and a plurality of permanent magnets provided on an outer peripheral portion of the shaft as a whole, and a holding member surrounds the shaft, the plurality of permanent magnets, and the conductive member as a whole. A conductivity of the conductive member is higher than a conductivity of the permanent magnet. The conductive member includes first and second opposing portions that oppose each other via a gap in a circumferential direction. An inter-opposing portion region existing between the first and second opposing portions is positioned within a circumferential direction range of an inter-magnet region existing between permanent magnets that are adjacent to each other in the circumferential direction.
    Type: Grant
    Filed: July 29, 2016
    Date of Patent: August 4, 2020
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Takahiro Mizuta, Moriyuki Hazeyama, Kazumasa Ito, Shinichi Yamaguchi, Masatsugu Nakano, Yoshiharu Takashima, Yoshiki Okada, Masafumi Ogawa
  • Patent number: 10722154
    Abstract: A medical photometer includes a processor and a memory that stores an instruction readable by a computer. When the instruction is executed by the processor, the medical photometer acquires a first light attenuation of a first light beam that is transmitted through or reflected from a tissue of a living body, and that has a first wavelength, based on a first intensity signal corresponding to an intensity of the first light beam, acquires a second light attenuation of a second light beam that is transmitted through or reflected from the tissue, and that has a second wavelength, based on a second intensity signal corresponding to an intensity of the second light beam, calculates a tissue thickness based on a ratio of the first light attenuation and the second light attenuation, and detects an artifact of the living body based on a temporal variation of the tissue thickness.
    Type: Grant
    Filed: October 25, 2017
    Date of Patent: July 28, 2020
    Assignee: NIHON KOHDEN CORPORATION
    Inventors: Yoshinori Ueda, Teiji Ukawa, Kazumasa Ito, Hideki Fujisaki
  • Patent number: 10722153
    Abstract: A medical photometer includes a processor and a memory that stores an instruction readable by a computer. When the instruction is executed by the processor, the medical photometer acquires an intensity of one of a first intensity signal and a second intensity signal, the first intensity signal corresponding to an intensity of a first light beam that has a first wavelength and that is transmitted through or reflected from a tissue of a living body, and a second intensity signal corresponding to an intensity of a second light beam that has a second wavelength and that is transmitted through or reflected from the tissue of the living body acquires an intensity ratio of the first intensity signal and the second intensity signal, and detects an artifact of the living body based on the acquired intensity and the acquired intensity ratio.
    Type: Grant
    Filed: October 25, 2017
    Date of Patent: July 28, 2020
    Assignee: Nihon Kohden Corporation
    Inventors: Yoshinori Ueda, Teiji Ukawa, Kazumasa Ito, Hideki Fujisaki