Patents by Inventor Eiji Kumagai

Eiji Kumagai 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: 20230392049
    Abstract: Provided is a readily adhesive polyester film that has antistatic properties-and prevents an antistatic agent from transferring to other items The readily adhesive polyester film includes a polyester film and a readily adhesive layer on at least one surface of the polyester film, wherein the readily adhesive layer is formed of a cured composition containing an ion-conducting antistatic agent, a polyester resin, and a polycarbonate urethane resin, a surface of the readily adhesive layer has a surface specific resistance value of 1.0×1013 ?/sq or lower, and after the surface of the readily adhesive layer is brought into contact with an additional polyester film and maintained at a temperature of 50° C. under a pressure of 1 kg/cm2 for 3 days, the surface of the additional polyester film that is in contact with the surface of the readily adhesive layer has a surface specific resistance value of 1.0×1014 ?/sq or higher.
    Type: Application
    Filed: September 22, 2021
    Publication date: December 7, 2023
    Applicant: TOYOBO CO., LTD.
    Inventors: Eiji KUMAGAI, Yohei YAMAGUCHI, Takeshi KUBO, Noriyuki TAKAGI, Tsuyoshi OHTA
  • Publication number: 20230120617
    Abstract: A readily adhesive white polyester film comprising a polyester film substrate and a coating layer on at least one surface of the polyester film substrate, the coating layer comprising a cationic antistatic agent containing nitrogen, a polyester resin, and a polyurethane resin, the proportion A (at %) of nitrogen derived from the antistatic agent and the proportion B (at %) of nitrogen derived from the polyurethane resin based on surface element distribution measurement by X-ray photoelectron spectroscopy in the coating layer satisfying the following formulas (i) and (ii), and a surface of the coating layer having a contact angle with respect to water of 50° to 70°: A(at %)>0.4??(i) 2.0?B/A?5.0.
    Type: Application
    Filed: March 1, 2021
    Publication date: April 20, 2023
    Applicant: TOYOBO CO., LTD.
    Inventors: Takeshi KUBO, Eiji KUMAGAI
  • Publication number: 20220275139
    Abstract: Provided is a white laminated polyester film that has blocking resistance when water adheres and has excellent adhesion to UV ink. A white laminated polyester film comprising a polyester resin layer and a coating layer on at least one surface of the polyester film substrate, the coating layer being formed by curing a composition containing a urethane resin with a polycarbonate structure and a branched structure, a crosslinking agent, and a polyester resin. The crosslinking agent is preferably a compound containing three or more blocked isocyanate groups.
    Type: Application
    Filed: July 10, 2020
    Publication date: September 1, 2022
    Applicant: TOYOBO CO., LTD.
    Inventors: Noriyuki TAKAGI, Eiji KUMAGAI, Takeshi KUBO
  • Patent number: 10587127
    Abstract: There is provided a charging device including a charging voltage providing unit configured to provide a maximum charging voltage for an electricity storage unit, wherein the electricity storage unit includes a plurality of battery cells, and wherein the maximum charging voltage satisfies an equation (1) below: Maximum Charging Voltage=Total Battery Voltage+(Fully Charged Voltage?Maximum Cell Voltage)*n (1) wherein n represents a total number of the battery cells connected in series.
    Type: Grant
    Filed: March 18, 2015
    Date of Patent: March 10, 2020
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Naoyuki Sugeno, Hisato Asai, Eiji Kumagai, Noritoshi Imamura, Koji Umetsu
  • Patent number: 10008862
    Abstract: There is provided a power storage device including a plurality of modules each including secondary batteries, a charging switch that controls charging to the secondary batteries, a discharging switch that controls discharging of the secondary batteries, and a voltage measuring unit that measures a voltage of the module, and a switch control unit that controls one or both of the charging switch and the discharging switch. The modules are connected in parallel. The switch control unit maintains an on state of the discharging switch for at least one of the modules for a predetermined period, and controls the charging switch of the module in which a maximum module charging current estimated based on the voltage of the module is a predetermined value or less, to be in an on state.
    Type: Grant
    Filed: March 6, 2014
    Date of Patent: June 26, 2018
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Shuichi Takizawa, Naoyuki Sugeno, Koji Umetsu, Eiji Kumagai, Bunya Sato, Aniket Khade, Tatsuya Adachi, Atsushi Chinen, Hisato Asai, Kohki Watanabe
  • Patent number: 9991702
    Abstract: A battery system including a battery unit including a plurality of battery cells, and a control device including a power supply boot-up unit. The power supply boot-up unit is configured to receive a voltage from the plurality of battery cells, and supply a control signal in response to the voltage supplied by the plurality of battery cells.
    Type: Grant
    Filed: February 15, 2017
    Date of Patent: June 5, 2018
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Eiji Kumagai
  • Patent number: 9966759
    Abstract: A battery monitor circuit includes a first monitoring unit for detecting voltages of battery cells in a first group, a second monitoring unit for detecting voltages of battery cells in a second group, and a current cancellation unit for canceling a difference between first and second currents that flow through the first and second monitoring units, respectively. One terminal of a series connection of the battery cells in the first and second groups and one terminal of the first monitoring unit are connected, the other terminal of the first monitoring unit and one terminal of the second monitoring unit are connected, and the other terminal of the second monitoring unit and the other terminal of the series connection are connected. The current cancellation unit is disposed between a connection point between the first and second monitoring units and a middle connection point in the middle of the series connection.
    Type: Grant
    Filed: November 2, 2015
    Date of Patent: May 8, 2018
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Eiji Kumagai, Akira Sampei, Kazuharu Yanagihara
  • Patent number: 9929559
    Abstract: A first power source line disposed between a positive electrode side of an electricity storage unit and a first external terminal, a second power source line disposed between a negative electrode side of the electricity storage unit and a second external terminal, a power source circuit connected to both the first and second power source lines and configured to supply an output voltage to a control circuit in an operating state, a power source control circuit configured to control an operating state and a non-operating state of the power source circuit, a first control signal generation circuit configured to supply a first control signal corresponding to transition of an external voltage applied to the first external terminal and the second external terminal to the power source control circuit to set the power source circuit in an operating state for a prescribed time, and a second control signal generation circuit configured to generate a second control signal that allows the power source circuit to be set i
    Type: Grant
    Filed: May 29, 2014
    Date of Patent: March 27, 2018
    Assignee: MURATA MANUFACTURING Co., Ltd.
    Inventors: Raghunath Bellala, Eiji Kumagai
  • Patent number: 9698449
    Abstract: A connection mode of a plurality of arbitrarily connected storage units is detected and the plurality of storage units is controlled according to the detected connection mode. Six storage modules MOD1 to MOD6 are connected in series. A total voltage V(Total) and individual output voltages V(1) to V(6) of respective storage modules are supplied to an output controller ICNT. A controller PR of the output controller ICNT determines the connection mode depending on whether a determination equation is satisfied. When the number of storage modules is set to N, the total output voltage is set to V(Total), the individual output voltages are set to V(1), V(2), . . . , and V(N), and the number of parallels of the connection mode is set to M, (determination equation: V(1)=V(2)= . . . =V(N)=(1/M)×V(Total)) is used. When the determination equation is satisfied, (N/M) parallel M series is determined.
    Type: Grant
    Filed: October 12, 2011
    Date of Patent: July 4, 2017
    Assignee: Sony Corporation
    Inventor: Eiji Kumagai
  • Publication number: 20170163034
    Abstract: A battery system including a battery unit including a plurality of battery cells, and a control device including a power supply boot-up unit. The power supply boot-up unit is configured to receive a voltage from the plurality of battery cells, and supply a control signal in response to the voltage supplied by the plurality of battery cells.
    Type: Application
    Filed: February 15, 2017
    Publication date: June 8, 2017
    Inventor: Eiji KUMAGAI
  • Patent number: 9608464
    Abstract: A battery system including a battery unit including a plurality of battery cells, and a control device including a power supply boot-up unit. The power supply boot-up unit is configured to receive a voltage from the plurality of battery cells, and supply a control signal in response to the voltage supplied by the plurality of battery cells.
    Type: Grant
    Filed: June 29, 2012
    Date of Patent: March 28, 2017
    Assignee: Sony Corporation
    Inventor: Eiji Kumagai
  • Patent number: 9608451
    Abstract: The present disclosure provides an electric power supplying apparatus including: an electric storage device; and a control portion configured to control processing for mixing an output from the electric storage device, and an electric power of an external electric power system with each other in accordance with at least one of a peak shift command, a load electric power, and a remaining capacity of the electric storage device, wherein an alternating current electric power is formed in the mixing processing. When the electric power supplying apparatus further includes an electric power generating apparatus, processing for mixing an output from the electric power generating apparatus, an output from the electric storage device, and an electric power of the external electric power system with one another, is controlled.
    Type: Grant
    Filed: March 28, 2013
    Date of Patent: March 28, 2017
    Assignee: Sony Corporation
    Inventors: Naoyuki Sugeno, Noritoshi Imamura, Eiji Kumagai, Koji Umetsu, Atsushi Minami, Masayuki Yasuda
  • Patent number: 9419458
    Abstract: Discharge is stopped when a voltage of a battery becomes smaller than a defined value or a remaining capacity of the battery reaches 0, and further, when power to a system cannot be maintained, the system is automatically shut down to be put into a shutdown state. When it is determined that the voltage of the battery or an SOC from a battery monitor 11 is smaller than the defined value, a discharge control switch 22 is turned off. A voltage Vx corresponding to a voltage between terminals T1 and T2 is input to an A/D port of a controller 21 and a value thereof is monitored. When it is determined that the voltage Vx input to the A/D port is smaller than a defined value, the controller 21 turns off a switch circuit 12 to turn off power to the battery monitor 11.
    Type: Grant
    Filed: October 12, 2011
    Date of Patent: August 16, 2016
    Assignee: Sony Corporation
    Inventor: Eiji Kumagai
  • Publication number: 20160164282
    Abstract: A first power source line disposed between a positive electrode side of an electricity storage unit and a first external terminal, a second power source line disposed between a negative electrode side of the electricity storage unit and a second external terminal, a power source circuit connected to both the first and second power source lines and configured to supply an output voltage to a control circuit in an operating state, a power source control circuit configured to control an operating state and a non-operating state of the power source circuit, a first control signal generation circuit configured to supply a first control signal corresponding to transition of an external voltage applied to the first external terminal and the second external terminal to the power source control circuit to set the power source circuit in an operating state for a prescribed time, and a second control signal generation circuit configured to generate a second control signal that allows the power source circuit to be set i
    Type: Application
    Filed: May 29, 2014
    Publication date: June 9, 2016
    Inventors: Raghunath BELLALA, EIJI KUMAGAI
  • Publication number: 20160072282
    Abstract: A battery monitor circuit includes a first monitoring unit for detecting voltages of battery cells in a first group, a second monitoring unit for detecting voltages of battery cells in a second group, and a current cancellation unit for canceling a difference between first and second currents that flow through the first and second monitoring units, respectively. One terminal of a series connection of the battery cells in the first and second groups and one terminal of the first monitoring unit are connected, the other terminal of the first monitoring unit and one terminal of the second monitoring unit are connected, and the other terminal of the second monitoring unit and the other terminal of the series connection are connected. The current cancellation unit is disposed between a connection point between the first and second monitoring units and a middle connection point in the middle of the series connection.
    Type: Application
    Filed: November 2, 2015
    Publication date: March 10, 2016
    Inventors: Eiji Kumagai, Akira Sampei, Kazuharu Yanagihara
  • Patent number: 9270135
    Abstract: A power supply apparatus includes a plurality of power storage modules that are connected in parallel and a backup power storage module that is connected in parallel with the plurality of power storage modules. When charging or discharging of at least one of the power storage modules is disabled, charging of the other power storage modules is inhibited, discharging of the backup power storage module is permitted, states of charge of the backup power storage module and the other power storage modules are detected, and charging of the backup power storage module and the other power storage modules is permitted in accordance with the detected states of charge.
    Type: Grant
    Filed: May 21, 2013
    Date of Patent: February 23, 2016
    Assignee: SONY CORPORATION
    Inventor: Eiji Kumagai
  • Publication number: 20160049813
    Abstract: There is provided a power storage device including a plurality of modules each including secondary batteries, a charging switch that controls charging to the secondary batteries, a discharging switch that controls discharging of the secondary batteries, and a voltage measuring unit that measures a voltage of the module, and a switch control unit that controls one or both of the charging switch and the discharging switch. The modules are connected in parallel. The switch control unit maintains an on state of the discharging switch for at least one of the modules for a predetermined period, and controls the charging switch of the module in which a maximum module charging current estimated based on the voltage of the module is a predetermined value or less, to be in an on state.
    Type: Application
    Filed: March 6, 2014
    Publication date: February 18, 2016
    Inventors: Shuichi TAKIZAWA, Naoyuki SUGENO, Koji UMETSU, Eiji KUMAGAI, Bunya SATO, Aniket KHADE, Tatsuya ADACHI, Atsushi CHINEN, Hisato ASAI, Kohki WATANABE
  • Patent number: 9178366
    Abstract: A battery monitor circuit includes a first monitoring unit for detecting voltages of battery cells in a first group, a second monitoring unit for detecting voltages of battery cells in a second group, and a current cancellation unit for canceling a difference between first and second currents that flow through the first and second monitoring units, respectively. One terminal of a series connection of the battery cells in the first and second groups and one terminal of the first monitoring unit are connected, the other terminal of the first monitoring unit and one terminal of the second monitoring unit are connected, and the other terminal of the second monitoring unit and the other terminal of the series connection are connected. The current cancellation unit is disposed between a connection point between the first and second monitoring units and a middle connection point in the middle of the series connection.
    Type: Grant
    Filed: June 21, 2012
    Date of Patent: November 3, 2015
    Assignee: Sony Corporation
    Inventors: Eiji Kumagai, Akira Sampei, Kazuharu Yanagihara
  • Patent number: 9034511
    Abstract: A power storage apparatus having a battery unit housed in a case includes external terminals of positive and negative poles for providing, from outside the case, electrical connection to corresponding positive and negative poles of the battery unit; and electronic parts, wherein only when a connection with the battery unit is cut from at least one of the external terminals of both the poles, the electronic parts can be accessed.
    Type: Grant
    Filed: November 18, 2011
    Date of Patent: May 19, 2015
    Assignee: SONY CORPORATION
    Inventors: Tatsuya Adachi, Eiji Kumagai
  • Patent number: 9018911
    Abstract: There is provided an electric circuit including a semiconductor switch that is inserted in a positive side power line; and converting means for converting an input voltage input to an input side terminal to a predetermined output voltage and for outputting the output voltage from an output side terminal, wherein the output side negative terminal of the converting means is connected to the positive side power line, and the output side positive terminal of the converting means is connected to a terminal that controls an opening and closing of the semiconductor switch.
    Type: Grant
    Filed: August 23, 2011
    Date of Patent: April 28, 2015
    Assignee: Sony Corporation
    Inventor: Eiji Kumagai