Patents by Inventor Kohei Shibata

Kohei Shibata 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: 10351528
    Abstract: A compound having a SF4 group on a pyridine ring is provided. Specifically, the compound is represented by the general formula (c): wherein k is 1 or 2; X is a hydrogen atom or a halogen atom; R1 is a hydrogen atom, a halogen atom, a substituted or unsubstituted alkyl group having 1 to 18 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, or a nitro group; and R2 is a substituted or unsubstituted alkyl group having 1 to 18 carbon atoms or a substituted or unsubstituted aryl group having 6 to 30 carbon atoms.
    Type: Grant
    Filed: September 23, 2016
    Date of Patent: July 16, 2019
    Assignee: UBE INDUSTRIES, LTD.
    Inventors: Norio Shibata, Kohei Matsuzaki, Norimichi Saito
  • Publication number: 20190181665
    Abstract: A rechargeable battery protection integrated circuit that protects a rechargeable battery, by turning off a switching circuit inserted in series in a current path between a negative electrode of the rechargeable battery and a negative terminal that is coupled to ground of a load or a charger, includes a power source terminal that electrically connects to a positive electrode of the rechargeable battery, a ground terminal that electrically connects to the negative electrode of the rechargeable battery, a monitor terminal that electrically connects to the negative terminal via a resistor, to monitor a potential of the negative terminal, and a clamp circuit. The clamp circuit monitors a voltage of the power source terminal and a voltage of the monitor terminal, and limits the voltage of the monitor terminal to a voltage lower than or equal to the voltage of the power source terminal.
    Type: Application
    Filed: September 21, 2018
    Publication date: June 13, 2019
    Applicant: MITSUMI ELECTRIC CO., LTD.
    Inventor: Kohei SHIBATA
  • Publication number: 20190181660
    Abstract: A battery protection circuit protects a rechargeable battery from overdischarge, by turning off a transistor inserted in series in a current path between a negative electrode of the battery and a negative terminal coupled to ground of a load or a charger. A detection circuit detects a power source voltage between power source and ground terminals, and a control circuit pulls down a monitor terminal potential to a ground terminal potential by turning off the transistor and stopping battery discharge when the power source voltage lower than an overdischarge detection voltage is detected. The control circuit cancels pull-down of the monitor terminal potential to the ground terminal potential when the power source voltage higher than an overdischarge reset voltage is not detected until a predetermined time elapses in a state in which the battery discharge is stopped and the monitor terminal potential is pulled down to the ground terminal potential.
    Type: Application
    Filed: September 21, 2018
    Publication date: June 13, 2019
    Applicant: MITSUMI ELECTRIC CO., LTD.
    Inventor: Kohei SHIBATA
  • Publication number: 20190181655
    Abstract: A battery control circuit controls a balance of cell voltage values of cells coupled in series, and includes connection terminals respectively coupling to a positive electrode of a corresponding cell, a ground terminal coupled to an internal ground of the battery control circuit and coupling to a negative electrode of a cell located at a lowest stage of the cells, a control circuit to select, from the connection terminals, at least one connection terminal coupled to the internal ground via an internal current path of the battery control circuit, and a current generation circuit to supply a terminal current whose current value varies according to the cell voltage value of the cell whose positive electrode is coupled to the at least one of the connection terminals selected by the control circuit, from the at least one of the connection terminals to the internal ground via the internal current path.
    Type: Application
    Filed: September 21, 2018
    Publication date: June 13, 2019
    Applicant: MITSUMI ELECTRIC CO., LTD.
    Inventor: Kohei SHIBATA
  • Patent number: 10218214
    Abstract: An energy management system that includes a power generation apparatus that outputs generated electric power to a HVDC bus, a bidirectional DC-DC converter to which a DC voltage is input from the HVDC bus or outputting a DC voltage to the HVDC bus, and an inverter that converts a DC voltage inputted from the HVDC bus to an AC voltage. A calibration value is set to the highest voltage among voltages of the HVDC bus each detected by the power generation apparatus, the bidirectional DC-DC converter, and the inverter, other detection voltages are calibrated with the calibration value. Then, each of the power generation apparatus, the bidirectional DC-DC converter, and the inverter carry out switching control such that the detection voltage after the calibration match with a target value.
    Type: Grant
    Filed: December 12, 2017
    Date of Patent: February 26, 2019
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Kohei Shibata
  • Publication number: 20180345912
    Abstract: A vehicular wiper device includes a first wiper arm, a first drive source, a rocking mechanism, a second drive source, an extension and retraction mechanism, and a control unit. A first wiper blade for wiping a surface to be wiped of a vehicle is connected to the front end of the first wiper arm. The first drive source is directly or indirectly affixed to the vehicle body. The rocking mechanism is driven by the drive force of the first drive source and reciprocates and rocks the first wiper arm. The second drive source is directly or indirectly affixed to the vehicle body separately from the first drive source. The extension and retraction mechanism is driven by the drive force of the second drive source and extends and retracts the first wiper arm in the longitudinal direction thereof.
    Type: Application
    Filed: May 23, 2016
    Publication date: December 6, 2018
    Inventors: Norihiro Sugimoto, Yasuhide Ito, Shinichi Okada, Takafumi Negi, Atsushi Kato, Kohei Shibata, Tomohiro Aoyama
  • Publication number: 20180316154
    Abstract: A wavelength monitoring device includes a polarization rotation element; an etalon element that includes a first double refractive layer and a single refractive layer or a second double refractive layer that is disposed by rotating an optic axis of the second double refractive layer with respect to an optic axis of the first double refractive layer; a polarization separating element that separates an input light, which has the polarization direction rotated and is transmitted through the etalon element, into first light having a polarization direction parallel to the optic axis of the first double refractive layer and second light having a polarization direction perpendicular to the optic axis of the first double refractive layer; a first light receiving device that receives the first light to detect a first monitor value; and a second light receiving device that receives the second light to detect a second monitor value.
    Type: Application
    Filed: March 26, 2018
    Publication date: November 1, 2018
    Applicant: Fujitsu Optical Components Limited
    Inventors: Tomonori Azuma, Kohei Shibata
  • Patent number: 10074875
    Abstract: A protection circuit for protecting a secondary battery includes a controller that closes a charging path for charging the secondary battery with a charger when a charge preventing condition is satisfied, the charging path being between a terminal of the secondary battery and an input-output terminal for connecting the charger and an electronic apparatus, opens the charging path when a discharging current from the secondary battery to the electronic apparatus is detected while the charge preventing condition is satisfied and the charging path is closed, and temporarily closes the charging path when a predetermined period of time passes after the charging path is opened, to determine whether the discharging current is flowing.
    Type: Grant
    Filed: November 17, 2014
    Date of Patent: September 11, 2018
    Assignee: MITSUMI ELECTRIC CO., LTD.
    Inventors: Kohei Shibata, Hibiki Yano
  • Publication number: 20180217342
    Abstract: An optical device includes a substrate. The substrate includes a first optical waveguide component having a first optical waveguide, a pair of first projections in which a gap between side faces thereof varies in a direction along an optical axis of the first optical waveguide, and a first pattern. The optical device includes a second optical waveguide component. The second optical waveguide component includes a second optical waveguide, at least one pair of second projections, and a second pattern. The second pattern and the first pattern are soldered to each other and side faces of the at least one pair of second projections are in contact with the side faces of the pair of first projections, respectively.
    Type: Application
    Filed: January 16, 2018
    Publication date: August 2, 2018
    Applicant: Fujitsu Optical Components Limited
    Inventor: Kohei SHIBATA
  • Publication number: 20180196277
    Abstract: A polarization coupling device includes a polarization combining element. The polarization combining element includes a polarization rotating unit that rotates a polarization direction of a first polarized wave incident on the polarization combining element, and a polarization combining unit that combines the first polarized wave with the polarization direction rotated by the polarization rotating unit and a second polarized wave incident on the polarization combining element with each other, and the polarization rotating unit and the polarization combining unit are integrated with each other. Due to this configuration, the polarization coupling device has an effect where downscaling of the device can be advanced.
    Type: Application
    Filed: January 11, 2018
    Publication date: July 12, 2018
    Applicant: Fujitsu Optical Components Limited
    Inventors: Seimi SASAKI, Hiroshi KATO, Kohei SHIBATA, Takehito TANAKA
  • Publication number: 20180115186
    Abstract: An energy management system that includes a power generation apparatus that outputs generated electric power to a HVDC bus, a bidirectional DC-DC converter to which a DC voltage is input from the HVDC bus or outputting a DC voltage to the HVDC bus, and an inverter that converts a DC voltage inputted from the HVDC bus to an AC voltage. A calibration value is set to the highest voltage among voltages of the HVDC bus each detected by the power generation apparatus, the bidirectional DC-DC converter, and the inverter, other detection voltages are calibrated with the calibration value. Then, each of the power generation apparatus, the bidirectional DC-DC converter, and the inverter carry out switching control such that the detection voltage after the calibration match with a target value.
    Type: Application
    Filed: December 12, 2017
    Publication date: April 26, 2018
    Inventor: KOHEI SHIBATA
  • Publication number: 20180076638
    Abstract: A battery control circuit that is used for a battery protecting apparatus configured to protect a secondary battery in which cells are connected in series includes: a level shift circuit configured to shift respective levels of cell voltages of the cells to generate level shift voltages; a maximum voltage output circuit including differential amplifier circuits for the respective level shift voltages, the respective differential amplifier circuits being configured to compare the corresponding level shift voltages with threshold voltages to generate output voltages, the maximum voltage output circuit being configured to simultaneously compare the output voltages to output a maximum voltage corresponding to a cell voltage whose voltage value is highest; an overcharge detecting circuit configured to detect overcharging of the secondary battery based on the maximum voltage; and a maximum voltage cell specifying circuit configured to specify, based on the output voltages, a cell whose voltage value is highest.
    Type: Application
    Filed: August 29, 2017
    Publication date: March 15, 2018
    Applicant: MITSUMI ELECTRIC CO., LTD.
    Inventor: Kohei SHIBATA
  • Patent number: 9864147
    Abstract: An optical modulator module includes: a semiconductor modulator that includes a plurality of output waveguides; a first cylindrical lens that has a longitudinal direction in a direction in which the plurality of output waveguides are aligned, and through which lights output from the plurality of output waveguides penetrate; and a plurality of second cylindrical lenses each having a longitudinal direction that intersects with the longitudinal direction of the first cylindrical lens and allowing a corresponding light of the lights output from the plurality of output waveguides to penetrate therethrough.
    Type: Grant
    Filed: March 30, 2016
    Date of Patent: January 9, 2018
    Assignee: FUJITSU OPTICAL COMPONENTS LIMITED
    Inventors: Hiroshi Kato, Shinji Maruyama, Kohei Shibata, Seimi Sasaki, Teruhiro Kubo, Takehito Tanaka
  • Patent number: 9777797
    Abstract: An actuator comprises a motor including a rotation shaft; an output shaft disposed coaxially to the rotation shaft; a rotation shaft side gear rotatable as a unit with the rotation shaft; an output shaft side gear rotatable as a unit with the output shaft; an intermediate gear configuration body that includes a first intermediate gear and a second intermediate gear and that meshes with the rotation shaft side gear and the output shaft side gear; a first bearing supporting an end portion of the intermediate gear configuration body at a side of the first intermediate gear; and a second bearing supporting another end portion of the intermediate gear configuration body at a side of the second intermediate gear; wherein the second intermediate gear is rotatable as a unit with the first intermediate gear and is disposed further to a radial direction outside of the motor than the first intermediate gear.
    Type: Grant
    Filed: November 27, 2015
    Date of Patent: October 3, 2017
    Assignee: ASMO CO., LTD.
    Inventors: Shinichi Okada, Yasuhide Ito, Kohei Shibata, Takafumi Negi
  • Publication number: 20170184180
    Abstract: An actuator includes a motor having a rotation shaft, and an output shaft disposed coaxially to the rotation shaft. A rotation shaft side gear is provided so as to be rotatable as a unit with the rotation shaft, and an output shaft side gear is provided so as to be rotatable as a unit with the output shaft. An intermediate gear configuration body is provided between the rotation shaft side gear and the output shaft side gear. The intermediate gear configuration body includes a first intermediate gear that meshes with the rotation shaft side gear, and a second intermediate gear that is provided so as to be rotatable as a unit with the first intermediate gear and that meshes with the rotation shaft side gear. A detected portion is provided at an end portion of the intermediate gear configuration body and detects a rotation speed of the intermediate gear configuration body. A detecting portion detects the detected portion.
    Type: Application
    Filed: March 13, 2017
    Publication date: June 29, 2017
    Inventors: Shinichi OKADA, Yasuhide ITO, Kohei SHIBATA, Takafumi NEGI
  • Patent number: 9638861
    Abstract: A first lens transmits a beam of light having a vertical cross-sectional diameter made closer to a horizontal cross-sectional diameter. The beam of light is emitted from an optical waveguide on a substrate and configured such that the vertical cross-sectional diameter which is the diameter of a vertical cross section along the direction of the thickness of the substrate is greater than the horizontal cross-sectional diameter which is the diameter of a horizontal cross section along the direction of the width of the substrate. A second lens is disposed at a position, at which the vertical cross-sectional diameter and the horizontal cross-sectional diameter coincide with each other, so as to focus the beam of light on the optical fiber. The position is closer to the optical fiber than the first lens along the direction of travel of the beam of light transmitted by the first lens.
    Type: Grant
    Filed: February 25, 2015
    Date of Patent: May 2, 2017
    Assignee: FUJITSU OPTICAL COMPONENTS LIMITED
    Inventors: Shinji Maruyama, Seimi Sasaki, Kohei Shibata, Teruhiro Kubo, Shintaro Takeuchi, Hiroshi Kato, Takehito Tanaka
  • Patent number: 9638927
    Abstract: A polarization combiner includes: a base member that includes a body portion, an arm portion extending from the body portion, and a notch portion surrounded with the body portion and the arm portion; a polarization rotating element that is fixed to the arm portion of the base member and that rotates a polarization direction of a first polarized wave; and a polarization combining element that is fixed to the base member so as to face the notch portion of the base member and the polarization rotating element, the polarization combining element combining two polarized waves entering from a surface facing the notch portion and the polarization rotating element, the two polarized waves including the first polarized wave whose polarization direction is rotated by the polarization rotating element and a second polarized wave passing the notch portion.
    Type: Grant
    Filed: February 9, 2015
    Date of Patent: May 2, 2017
    Assignee: FUJITSU OPTICAL COMPONENTS LIMITED
    Inventors: Seimi Sasaki, Kohei Shibata, Teruhiro Kubo, Shinji Maruyama, Shintaro Takeuchi, Hiroshi Kato, Takehito Tanaka
  • Publication number: 20160349457
    Abstract: An optical modulator module includes: a semiconductor modulator that includes a plurality of output waveguides; a first cylindrical lens that has a longitudinal direction in a direction in which the plurality of output waveguides are aligned, and through which lights output from the plurality of output waveguides penetrate; and a plurality of second cylindrical lenses each having a longitudinal direction that intersects with the longitudinal direction of the first cylindrical lens and allowing a corresponding light of the lights output from the plurality of output waveguides to penetrate therethrough.
    Type: Application
    Filed: March 30, 2016
    Publication date: December 1, 2016
    Applicant: Fujitsu Optical Components Limited
    Inventors: Hiroshi KATO, Shinji Maruyama, Kohei Shibata, Seimi Sasaki, Teruhiro Kubo, Takehito Tanaka
  • Publication number: 20160315486
    Abstract: A secondary battery protection system including a plurality of secondary battery protection apparatuses, wherein the system comprises: a first secondary battery protection apparatus, which is connected to a first secondary battery cell of the battery cells, comprising: a current transmission unit configured to generate and transmit a current transmission signal, a current value of the current transmission signal corresponding to the first condition being set; and a voltage determination unit configured to determine a voltage value of a voltage transmission signal; and a second secondary battery protection apparatus, comprising: a voltage transmission unit configured to generate and transmit the voltage transmission signal, a voltage value of the voltage transmission signal corresponding to the second condition being set; and a current determination unit configured to determine a current value of the current transmission signal; wherein the current transmission signal and the voltage transmission signal are tr
    Type: Application
    Filed: April 6, 2016
    Publication date: October 27, 2016
    Applicant: MITSUMI ELECTRIC CO., LTD.
    Inventor: Kohei SHIBATA
  • Patent number: 9461754
    Abstract: A housing accommodates an optical waveguide substrate, plural signal light receiving elements, and a signal-light-level monitoring light receiving element. Signal light and locally oscillated light are input into optical waveguides in the optical waveguide substrate from a first end face of the optical waveguide substrate. The plural signal light receiving elements are disposed aligned on a side of a second end face opposite to a side of the first end face of the optical waveguide substrate. The signal-light-level monitoring light receiving element is disposed on a side of a third end face or a fourth end face between the first end face and the second end face of the optical waveguide substrate and at a position closer to the first end face than to the second end face.
    Type: Grant
    Filed: September 26, 2014
    Date of Patent: October 4, 2016
    Assignee: FUJITSU OPTICAL COMPONENTS LIMITED
    Inventors: Hirohiko Sonoda, Kohei Shibata, Takuya Nakao, Yasuhiro Yamauchi, Ryuichi Yoshida, Hiroyuki Furukawa