Patents by Inventor Naoki Nishio

Naoki Nishio 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: 20220286066
    Abstract: An electric vehicle control device includes a first inverter controlling a first group defined by induction motors, and a second inverter controlling a second group defined by induction motors. The first inverter and the induction motors of the first group are connected to each other by a first conductor. The second inverter and the induction motors of the second group are connected by a second conductor. A first length is equal to or less than three times the average value of a second length and a third length. The first length is an inter-center distance between the first conductor and the second conductor, the second length is the maximum length of a conductor portion of the first conductor in the cross section of the first conductor, and the third length is the maximum length of a conductor portion of the second conductor in the cross section of the second conductor.
    Type: Application
    Filed: August 1, 2019
    Publication date: September 8, 2022
    Applicant: Mitsubishi Electric Corporation
    Inventors: Naoki NISHIO, Yasuhiro SHIRAKI, Takayoshi MIKI, Shinsuke KADOI, Hisanori YAMASAKI, Sho KATO, Tetsuo SUGAHARA
  • Patent number: 11424599
    Abstract: A spark plug including a center electrode that has a large-diameter portion having an outside diameter that is largest in the center electrode. The large-diameter portion is retained at a rear facing surface in an axial hole of an insulator. A metal shell has a diameter increased portion on a rear end side with respect to the center electrode, the diameter increased portion having an inside diameter that is increased toward the rear end side. The insulator has a first portion which is a portion of the insulator in a region from a rear end of the rear facing surface to a front end of the diameter increased portion. The first portion has a thickness that is the largest in the region, and is disposed at least on an outer periphery of the large-diameter portion.
    Type: Grant
    Filed: March 19, 2020
    Date of Patent: August 23, 2022
    Assignee: NGK SPARK PLUG CO., LTD.
    Inventors: Yusuke Tanahashi, Naoki Nishio, Yusuke Kawashima
  • Publication number: 20220181991
    Abstract: A bridge circuit includes a first leg and a second leg arranged in parallel between the first node and the third node. A clamp circuit includes a third leg including a first bidirectional switch disposed between a fourth node that is a midpoint of the first leg and a fifth node that is a midpoint of the second leg. A first reactor is connected with the fourth node and a sixth node, and a second reactor is connected with a fifth node and a seventh node. A fourth leg includes a second bidirectional switch disposed between the second node and the fourth node or the fifth node.
    Type: Application
    Filed: July 4, 2019
    Publication date: June 9, 2022
    Applicant: Mitsubishi Electric Corporation
    Inventors: Takeshi AMIMOTO, Naoki NISHIO
  • Publication number: 20210249846
    Abstract: A spark plug including a center electrode that has a large-diameter portion having an outside diameter that is largest in the center electrode. The large-diameter portion is retained at a rear facing surface in an axial hole of an insulator. A metal shell has a diameter increased portion on a rear end side with respect to the center electrode, the diameter increased portion having an inside diameter that is increased toward the rear end side. The insulator has a first portion which is a portion of the insulator in a region from a rear end of the rear facing surface to a front end of the diameter increased portion. The first portion has a thickness that is the largest in the region, and is disposed at least on an outer periphery of the large-diameter portion.
    Type: Application
    Filed: March 19, 2020
    Publication date: August 12, 2021
    Applicant: NGK SPARK PLUG CO., LTD.
    Inventors: Yusuke TANAHASHI, Naoki NISHIO, Yusuke KAWASHIMA
  • Publication number: 20210188100
    Abstract: A main converter (i) converts AC power from a generator at a primary terminal into DC power at a secondary terminal, an internal combustion engine driving the generator to generate the AC power, or (ii) converts DC power at the secondary terminal into AC power and supplies the AC power to the generator. A first inverter is connected to the secondary terminal of the main converter. A step-down circuit steps down a voltage of the DC power output by the main converter and supplies the stepped-down DC power to a power storage device. The generator, using the power storage device as an electric power source, operates as an electric motor to start the internal combustion engine. After the internal combustion engine is started, the DC power output by the main converter is supplied to the first inverter, stepped down by the step-down circuit, and supplied to the power storage device.
    Type: Application
    Filed: June 22, 2018
    Publication date: June 24, 2021
    Applicant: Mitsubishi Electric Corporation
    Inventors: Taichi YOSHIDA, Naoki NISHIO
  • Patent number: 10978856
    Abstract: A spark plug including a cylindrical insulator having a step portion; a center electrode provided in an axial hole of the insulator; and a cylindrical metal shell having a ledge portion, the metal shell holding the insulator from an outer circumferential side in a state in which the step portion is engaged with the ledge portion via a packing, wherein a recess is formed on a part contacting with the packing, of one of the step portion and the ledge portion, and a projection which at least partially overlaps the recess in the axial-line direction is formed on a part contacting with the packing, of the other of the step portion and the ledge portion.
    Type: Grant
    Filed: October 12, 2020
    Date of Patent: April 13, 2021
    Assignee: NGK Spark Plug Co., Ltd.
    Inventors: Yusuke Tanahashi, Naoki Nishio
  • Patent number: 10958044
    Abstract: In the spark plug, an insulator is held by a metal shell via a packing. The packing includes a base material and a metal layer formed on a surface of the base material. In a cross section including the axial line, of distances between end points of the metal layer on a first contact surface of the insulator that contacts with the metal layer and first points which are intersections of the first contact surface and first perpendiculars extending to the first contact surface from first corners at which a first surface and third surfaces of the base material intersect each other is longer than a thickness of the metal layer at a middle position on the third surface that corresponds to half a length measured along the third surface.
    Type: Grant
    Filed: September 30, 2020
    Date of Patent: March 23, 2021
    Assignee: NGK Spark Plug Co., Ltd.
    Inventors: Yusuke Kawashima, Naoki Nishio, Yusuke Tanahashi
  • Patent number: 10951021
    Abstract: A power conversion system includes one power conversion device and one or more power conversion devices. The power conversion device includes a power converter that controls output voltage to be a preset voltage to apply the preset voltage to a load on the basis of an output from a power supply. The power conversion device controls the power converter so that a detected value of the first voltage detected by a voltage detector becomes a preset voltage value. The power conversion devices each include a power converter that controls output current to be a preset current to supply the preset current to the load on the basis of an output from a power supply. The power conversion devices each controls operation of the power converter on the basis of the detected value of the first voltage. The power conversion device controls operation of the power converter by changing the first voltage.
    Type: Grant
    Filed: November 22, 2018
    Date of Patent: March 16, 2021
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yutaka Kuboyama, Naoki Nishio
  • Publication number: 20210013815
    Abstract: A power conversion system includes one power conversion device and one or more power conversion devices. The power conversion device includes a power converter that controls output voltage to be a preset voltage to apply the preset voltage to a load on the basis of an output from a power supply. The power conversion device controls the power converter so that a detected value of the first voltage detected by a voltage detector becomes a preset voltage value. The power conversion devices each include a power converter that controls output current to be a preset current to supply the preset current to the load on the basis of an output from a power supply. The power conversion devices each controls operation of the power converter on the basis of the detected value of the first voltage. The power conversion device controls operation of the power converter by changing the first voltage.
    Type: Application
    Filed: November 22, 2018
    Publication date: January 14, 2021
    Applicant: Mitsubishi Electric Corporation
    Inventors: Yutaka KUBOYAMA, Naoki NISHIO
  • Publication number: 20200411853
    Abstract: According to a first embodiment, there is provided a positive electrode including a positive electrode active material-containing layer containing a first active material having a spinel type crystal structure. The positive electrode satisfies the formulas (1) to (3) when combined with a negative electrode including a negative electrode active material-containing layer containing a first active material having a spinel type crystal structure: 0.5?a1/b1?1.5 (1); 0.4?a2/b2?1.4 (2); and 0.5?a3/b3?2.3 (3), where a1 and b1 are a pore volume per 1 g weight, a2 and b2 are a pore specific surface area, and a3 and b3 are a median diameter in pore distribution, for the positive and negative electrode active material-containing layers, respectively.
    Type: Application
    Filed: September 14, 2020
    Publication date: December 31, 2020
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Hikaru YOSHIKAWA, Akira YAJIMA, Yasuaki MURASHI, Naoki NISHIO, Kazuhiro NAMBA, Natsuki NAKAMURA
  • Publication number: 20200361322
    Abstract: A vehicle drive device includes a generator to output AC power, a converter that converts the AC power into DC power, and an inverter that converts the DC power into AC power. An electric motor is driven by the AC power output by the inverter, and an inverter controller (i) calculates a control command value in accordance with an operation command and (ii) controls the inverter based on the calculated value. A value obtained by dividing (i) an amount of the change in the control command value in a case of an increase of the operation command by (ii) a period from when the operation command changes to when the control command value reaches the control command value corresponding to post-change operation command has a negative correlation with the rotational speed of the electric motor at the time when the operation command changes.
    Type: Application
    Filed: February 7, 2018
    Publication date: November 19, 2020
    Applicant: Mitsubishi Electric Corporation
    Inventors: Taichi YOSHIDA, Kazuki KONISHI, Naoki NISHIO
  • Patent number: 9979020
    Abstract: According to one embodiment, a nonaqueous electrolyte battery including a positive electrode, a negative electrode, and a nonaqueous electrolyte is provided. The positive electrode includes an active material including Li1?xMn2?y?zAlyMzO4 (?0.1?x?1, 0.20?y?0.35, 0?z?0.1, M is at least one metal selected from Mg, Ca, Ti, V, Cr, Fe, Co, Ni, Cu, Zn, Zr, Nb, Mo, and Sn). The negative electrode includes an active material including a first oxide represented by Li4+aTi5O12 (?0.5?a?3) and a second oxide of at least one element selected from Al, Co, Cr, Cu, Fe, Mg, Ni, Zn, and Zr. The second oxide is included in an amount of from 300 ppm to 5000 ppm relative to a weight of the first oxide.
    Type: Grant
    Filed: February 25, 2016
    Date of Patent: May 22, 2018
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Hidesato Saruwatari, Hikaru Yoshikawa, Hiromichi Kuriyama, Yasuaki Murashi, Naoki Nishio, Dai Yamamoto
  • Patent number: 9947923
    Abstract: The nonaqueous electrolyte battery according to one embodiment includes a positive electrode and a negative electrode. The positive electrode contains a positive electrode active material containing manganese-containing composite oxide. The negative electrode contains a negative electrode active material selected from the group consisting of titanium oxide and titanium-containing composite oxide. A ratio p/n of a capacity p per unit area of the positive electrode to a capacity n per unit area of the negative electrode is in the range of 0.8 or more and 1 or less.
    Type: Grant
    Filed: February 23, 2016
    Date of Patent: April 17, 2018
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Hiromichi Kuriyama, Hikaru Yoshikawa, Hidesato Saruwatari, Yasuaki Murashi, Dai Yamamoto, Naoki Nishio
  • Patent number: 9868355
    Abstract: A propulsion control apparatus includes a first power converter that operates as a DC/AC converter, a DC/DC converter, or an AC/DC converter, a second power converter, a first control device that controls operations of a first motor and the first power converter, and a second control device that controls operations of a second motor and the second power converter, wherein a power storage device is configured to be able to connect to a second input/output end side and functions as a direct-current power supply that is charged with direct-current power supplied from the second input/output end side or discharges direct-current power to the second input/output end side.
    Type: Grant
    Filed: February 22, 2013
    Date of Patent: January 16, 2018
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Keita Hatanaka, Naoki Nishio
  • Patent number: 9664744
    Abstract: A cell module includes a unit cell, a sensor, a calculation device, a storage device, an assessment device and a controller. The sensor is connected to the unit cell. The calculation device is for calculating a value indicating the state of the unit cell on the basis of a value measured by the sensor. The storage device is for recording calculated values calculated by the calculation device. The assessment device is for assessing illegitimate usage of the cell module. The controller is for controlling the calculation device, the storage device, and the assessment device, the control device deleting calculated values recorded in the storage device and prohibiting recording of calculated values to the storage device when the assessment device assesses that illegitimate usage has occurred.
    Type: Grant
    Filed: June 24, 2013
    Date of Patent: May 30, 2017
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Yasutaka Nakamura, Jyun Ikezawa, Daijirou Sakurai, Junya Kohno, Naoki Nishio, Toshifumi Fukushige, Yoshio Shimoida
  • Publication number: 20170018797
    Abstract: According to one embodiment, a nonaqueous electrolyte battery includes a negative electrode, a positive electrode, and a nonaqueous electrolyte. When the nonaqueous electrolyte battery is discharged at a constant current of 0.5 C until a voltage becomes 1.5 V, a curve obtained by taking dQ/dV during the discharge as a vertical axis and voltage as a horizontal axis has a first peak and a second peak. The firs peak is a peak that appears within a range of from 2.54 V to 2.65 V, and the second peak is a peak that appears within a range of from 2.4 V to less than 2.54 V. A dQ/dV peak intensity A of the first peak and a dQ/dV peak intensity B of the second peak satisfy 0.8?A/B 1.0.
    Type: Application
    Filed: February 25, 2016
    Publication date: January 19, 2017
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Yasuaki MURASHI, Hikaru YOSHIKAWA, Hidesato SARUWATARI, Hiromichi KURIYAMA, Dai YAMAMOTO, Naoki NISHIO, Koichi KAWAMURA
  • Publication number: 20160268604
    Abstract: According to one embodiment, a nonaqueous electrolyte battery including a positive electrode, a negative electrode, and a nonaqueous electrolyte is provided. The positive electrode includes an active material including Li1?xMn2?y?zAlyMzO4 (?0.1?x?1, 0.20?y?0.35, 0?z?0.1, M is at least one metal selected from Mg, Ca, Ti, V, Cr, Fe, Co, Ni, Cu, Zn, Zr, Nb, Mo, and Sn). The negative electrode includes an active material including a first oxide represented by Li4+aTi5O12 (?0.5?a?3) and a second oxide of at least one element selected from Al, Co, Cr, Cu, Fe, Mg, Ni, Zn, and Zr. The second oxide is included in an amount of from 300 ppm to 5000 ppm relative to a weight of the first oxide.
    Type: Application
    Filed: February 25, 2016
    Publication date: September 15, 2016
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Hidesato SARUWATARI, Hikaru Yoshikawa, Hiromichi Kuriyama, Yasuaki Murashi, Naoki Nishio, Dai Yamamoto
  • Publication number: 20160240849
    Abstract: The nonaqueous electrolyte battery according to one embodiment includes a positive electrode and a negative electrode. The positive electrode contains a positive electrode active material containing manganese-containing composite oxide. The negative electrode contains a negative electrode active material selected from the group consisting of titanium oxide and titanium-containing composite oxide. A ratio p/n of a capacity p per unit area of the positive electrode to a capacity n per unit area of the negative electrode is in the range of 0.8 or more and 1 or less.
    Type: Application
    Filed: February 23, 2016
    Publication date: August 18, 2016
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Hiromichi KURIYAMA, Hikaru YOSHIKAWA, Hidesato SARUWATARI, Yasuaki MURASHI, Dai YAMAMOTO, Naoki NISHIO
  • Publication number: 20150343906
    Abstract: A propulsion control apparatus includes a first power converter that operates as a DC/AC converter, a DC/DC converter, or an AC/DC converter, a second power converter, a first control device that controls operations of a first motor and the first power converter, and a second control device that controls operations of a second motor and the second power converter, wherein a power storage device is configured to be able to connect to a second input/output end side and functions as a direct-current power supply that is charged with direct-current power supplied from the second input/output end side or discharges direct-current power to the second input/output end side.
    Type: Application
    Filed: February 22, 2013
    Publication date: December 3, 2015
    Inventors: Keita HATANAKA, Naoki NISHIO
  • Patent number: 9184312
    Abstract: A transmitting circuit is connected to a power line at current flow-in sides to solar battery strings, and a receiving circuit is connected to the power line at current flow-out sides to the solar battery strings. An attenuating circuit connected in series to a bypass diode is provided in a bypass circuit. The transmitting circuit transmits a periodic signal of a predetermined frequency to the power line. The receiving circuit receives via the solar battery strings a transmission signal transmitted from the transmitting circuit to the power line. A determining circuit determines that, when it is detected that an amplitude of a transmission signal received by the receiving circuit is attenuated by a predetermined value or more, direct-current power is conducted to the bypass circuit.
    Type: Grant
    Filed: July 8, 2008
    Date of Patent: November 10, 2015
    Assignee: Mitsubishi Electric Corporation
    Inventors: Tomihiro Takano, Masashi Fujitsuka, Naoki Nishio, Naoto Shimada