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).

  • 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: 10734740
    Abstract: A press-fit terminal includes an end part that is to be inserted into a through-hole of a circuit board. The end part is connected electrically to the through-hole by being in elastic contact with an inner wall of the through-hole. The press-fit terminal also includes a base part opposite to the end part. Two elastic contact pieces are between the end part and the base part and are disposed to face each other through an opening. A stress dispersion part is provided in at least one of a region that includes a border between the end part and the elastic contact pieces and a region that includes a border between the base part and the elastic contact pieces. The stress dispersion part protrudes in the same direction as an expanding direction in which the elastic contact pieces expand.
    Type: Grant
    Filed: October 4, 2017
    Date of Patent: August 4, 2020
    Assignees: AutoNetworks Technologies, Ltd., Sumitomo Wiring Systems, Ltd., Sumitomo Electric Industries, Ltd.
    Inventors: Takuya Yamanaka, Tetsuya Ito, Kazumasa Kobayashi, Yuichi Nakanishi, Shigeki Shimada
  • 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
  • Publication number: 20200239425
    Abstract: An object of the present invention is to provide a compound having an anti-inflammatory activity or a pharmacologically acceptable salt thereof. The solution of the present invention is a compound of general formula (1) or a pharmacologically acceptable salt thereof. wherein the symbols in the formula are defined below: R1: e.g., a C1-C6 alkyl group; R2: a C1-C6 alkyl group; A: e.g., an oxygen atom; and R3: e.g., a C1-C6 alkyl group.
    Type: Application
    Filed: April 9, 2020
    Publication date: July 30, 2020
    Applicant: Daiichi Sankyo Company, Limited
    Inventors: Keiji Saito, Katsuyoshi Nakajima, Toru Taniguchi, Osamu Iwamoto, Satoshi Shibuya, Yasuyuki Ogawa, Kazumasa Aoki, Nobuya Kurikawa, Shinji Tanaka, Momoko Ogitani, Eriko Kioi, Kaori Ito, Natsumi Nishihama, Tsuyoshi Mikkaichi, Wataru Saitoh
  • 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
  • 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: 10717963
    Abstract: The object of the present invention is to provide a method of culturing lactic acid bacteria to obtain a lactic acid bacteria culture in which the number of lactic acid bacteria can be stably maintained, and to obtain food and drink products comprising a lactic acid bacteria culture excellent in product stability. In order to accomplish the object, the present invention provides a method of culturing lactic acid bacteria comprising inoculating lactic acid bacteria to a medium comprising a milk ingredient having a free phosphoric acid concentration of less than 0.25 wt %, and a phosphate, and food and drink products comprising the lactic acid bacteria culture obtained by this culturing method.
    Type: Grant
    Filed: March 19, 2010
    Date of Patent: July 21, 2020
    Assignee: KABUSHIKI KAISHA YAKULT HONSHA
    Inventors: Masatoshi Nakano, Mika Arifuku, Harumi Mizukoshi, Susumu Mizusawa, Kazumasa Kimura, Masahiko Ito
  • Patent number: 10702196
    Abstract: A pulse photometer includes a light emitter, a light detector, a first signal separator that separates a first signal component and a first noise component, a second signal separator that separates a second signal component and a second noise component, a first determining section, a second determining section, and a concentration calculating section that calculates a concentration of a light absorption material in blood of the subject based on a fundamental frequency of the first signal component or a fundamental frequency of the second signal component.
    Type: Grant
    Filed: November 21, 2017
    Date of Patent: July 7, 2020
    Assignee: NIHON KOHDEN CORPORATION
    Inventors: Yoshinori Ueda, Teiji Ukawa, Kazumasa Ito, Hideki Fujisaki
  • Patent number: 10667550
    Abstract: The filter for cigarette product includes a mouthpiece end side-filter material and a front stage-filter material. The mouthpiece end side-filter material has a low air flow-resistance unit that is arranged in a part of a cross section from a front end surface to a rear end surface and having a relatively low air flow-resistance, and a high air flow-resistance unit that is arranged in the remainder of the cross section from the front end surface to the rear end surface and having a higher air flow-resistance than the low air flow-resistance unit. At least on the rear end surface of the mouthpiece end side-filter material, the low air flow-resistance unit is arranged only in one semicircular area, of two parts into which the cross section of the mouthpiece end side-filter material is divided.
    Type: Grant
    Filed: September 12, 2017
    Date of Patent: June 2, 2020
    Assignee: JAPAN TOBACCO INC.
    Inventors: Kenji Ito, Yu Ninomiya, Tomiharu Nagata, Hiroyuki Torai, Sadao Ogi, Kazumasa Arae
  • Patent number: 10654821
    Abstract: An object of the present invention is to provide a compound having an anti-inflammatory activity or a pharmacologically acceptable salt thereof. The solution of the present invention is a compound of general formula (1) or a pharmacologically acceptable salt thereof. wherein the symbols in the formula are defined below: R1: e.g., a C1-C6 alkyl group; R2: a C1-C6 alkyl group; A: e.g., an oxygen atom; and R3: e.g., a C1-C6 alkyl group.
    Type: Grant
    Filed: September 5, 2019
    Date of Patent: May 19, 2020
    Assignee: Daiichi Sankyo Company, Limited
    Inventors: Keiji Saito, Katsuyoshi Nakajima, Toru Taniguchi, Osamu Iwamoto, Satoshi Shibuya, Yasuyuki Ogawa, Kazumasa Aoki, Nobuya Kurikawa, Shinji Tanaka, Momoko Ogitani, Eriko Kioi, Kaori Ito, Natsumi Nishihama, Tsuyoshi Mikkaichi, Wataru Saitoh
  • Publication number: 20200148104
    Abstract: An illuminating device (14) includes a circuit board (21) that has a wiring pattern on a first face (21a) and a second face (21b) being on a reverse side thereof, a light-emitting element that is mounted on the first face (21a) of the circuit board (21) and has a height (H) projecting from a front face of the circuit board (21), and a holder (22) that supports a reverse face (21b) of the circuit board (21) at a position that is lower than the height (H) of the light-emitting element (24) from a bottom face (27) thereof. Accordingly, the illuminating device that contributes to the versatility of the circuit board can be provided.
    Type: Application
    Filed: September 26, 2017
    Publication date: May 14, 2020
    Inventors: Takayoshi ITO, Kazumasa NARITA
  • Publication number: 20200143970
    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: Application
    Filed: January 2, 2020
    Publication date: May 7, 2020
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Shoji ISHIKAWA, Toru OGAWA, Kazumasa ITO, Ryuichi TAKIGUCHI
  • Patent number: 10627258
    Abstract: In a related-art resolver, a front and a back of a stator core cannot be distinguished, and it is difficult to mass-produce the resolver while matching directions of shear drops and burrs. Thus, assembly accuracy of the resolver is degraded. Further, productivity and assembling ability are degraded because electromagnetic steel sheets are laminated by rotary lamination. The present invention provides a resolver including: a resolver stator including: a stator core formed of electromagnetic steel sheets, which have teeth, and are laminated without rotary lamination; a one-phase excitation winding; and two-phase output windings; and a resolver rotor arranged to be opposed to the resolver stator, in which the stator core has marks which enable distinction of a rolling direction of the stator core and distinction of a front and a back of the stator core.
    Type: Grant
    Filed: August 21, 2014
    Date of Patent: April 21, 2020
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yusuke Morita, Atsushi Yamamoto, Masahiko Fujita, Naohiro Motoishi, Kazumasa Ito, Masatsugu Nakano