Patents by Inventor Hajime Fujita

Hajime Fujita 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: 20240138481
    Abstract: A power supply unit of an aerosol generating device includes: a power supply; a coil configured to generate an eddy current to a susceptor that heats an aerosol source using power supplied from the power supply; a detection circuit configured to detect information corresponding to an induced current generated in the coil; and a controller configured to control supply of power from the power supply to the coil. The controller is configured to start the supply of power from the power supply to the coil based on an output of the detection circuit, in a state in which power is not supplied from the power supply to the coil.
    Type: Application
    Filed: January 8, 2024
    Publication date: May 2, 2024
    Applicant: JAPAN TOBACCO INC.
    Inventors: Kazuma MIZUGUCHI, Hajime FUJITA
  • Publication number: 20240147583
    Abstract: A power supply unit includes: a power supply; a coil configured to generate an eddy current to a susceptor configured to heat an aerosol source; a current conversion circuit connected between the coil and the power supply and configured to convert a direct current supplied from the power supply into a pulsating current or an alternating current; an induction heating circuit to which the pulsating current or the alternating current converted by the current conversion circuit is supplied and which includes the coil; a first detection circuit configured to detect information corresponding to an induced current generated in the coil; a second detection circuit configured to detect an impedance of the induction heating circuit; and a controller configured to control supply of power from the power supply to the coil based on an output of the first detection circuit and an output of the second detection circuit.
    Type: Application
    Filed: January 8, 2024
    Publication date: May 2, 2024
    Applicant: JAPAN TOBACCO INC.
    Inventors: Kazuma MIZUGUCHI, Hajime FUJITA
  • Patent number: 11969022
    Abstract: An aerosol generation device includes: a load configured to heat an aerosol generation article by using power that is supplied from a power source, the aerosol generation article comprising an aerosol-forming substrate configured to hold or carry at least one of an aerosol source and a flavor source; and a control unit configured to control the power that is supplied from the power source to the load. When starting the supply of power to the load in a non-operation state, or when the load is in a preparation state in which the load is not capable of generating a predetermined amount or more of aerosols from the aerosol generation article, the control unit is configured to control the power that is supplied from the power source to the load by feed-forward control.
    Type: Grant
    Filed: September 25, 2020
    Date of Patent: April 30, 2024
    Assignee: JAPAN TOBACCO INC.
    Inventors: Takuma Nakano, Hajime Fujita
  • Patent number: 11963556
    Abstract: A power supply unit for an aerosol inhaler includes: a power supply configured to store power to generate aerosol from an aerosol source; and a charger capable of controlling charging of the power supply, the power supply unit for the aerosol inhaler further includes: a power reception coil capable of receiving the power in a wireless manner; and an inverter connected between the power reception coil and the charger.
    Type: Grant
    Filed: November 4, 2020
    Date of Patent: April 23, 2024
    Assignee: JAPAN TOBACCO INC.
    Inventors: Nobuhiro Tatsuta, Hajime Fujita
  • Patent number: 11944126
    Abstract: An inhalation component generation device includes a load configured to vaporize or atomize an inhalation component source with electric power from a power supply, and a control unit configured to be capable of acquiring a voltage value of the power supply. The control unit is configured to be capable of estimating or detecting at least one of degradation and failure of the power supply based on a time period required for the voltage value of the power supply to reach an upper limit from a lower limit of a predetermined voltage range during charging of the power supply.
    Type: Grant
    Filed: April 17, 2020
    Date of Patent: April 2, 2024
    Assignee: JAPAN TOBACCO INC.
    Inventors: Takeshi Akao, Hajime Fujita, Manabu Yamada
  • Publication number: 20240100275
    Abstract: A controller for an inhalation apparatus, which operates by electric power supplied from a power supply, includes a holding portion configured to hold an atomizer including a heater configured to generate flavored aerosol from a generation source of an aerosol source, a nonvolatile display; and a processor configured to control update of display of the nonvolatile display, wherein the processor determines whether to perform the update in response to occurrence of a factor for changing a remaining amount of the generation source.
    Type: Application
    Filed: December 6, 2023
    Publication date: March 28, 2024
    Applicant: Japan Tobacco Inc.
    Inventors: Ikuo FUJINAGA, Kentaro YAMADA, Hajime FUJITA
  • Publication number: 20240099394
    Abstract: A controller for an inhalation apparatus operates by electric power supplied from a chargeable power supply. The controller includes a holding portion configured to hold an atomizer including a heater configured to heat an aerosol source, a nonvolatile display configured to display an indicator concerning a remaining amount of the power supply, and a processor configured to change the indicator in a case where the remaining amount becomes smaller than a first threshold in discharging of the power supply, and to change the indicator in a case where the remaining amount becomes larger than a second threshold different from the first threshold in charging of the power supply.
    Type: Application
    Filed: December 6, 2023
    Publication date: March 28, 2024
    Applicant: Japan Tobacco Inc.
    Inventors: Ikuo FUJINAGA, Hajime FUJITA
  • Patent number: 11939977
    Abstract: A scroll compressor comprising a fixed scroll (15); an orbiting scroll (16) supported in a manner allowing for orbiting motion; a discharge port through which a fluid compressed by the two scrolls (15, 16) is discharged; an end plate step portion (16E) provided on an end plate of the orbiting scroll (16) formed so that a height of the end plate is higher on a center portion side in the direction of a spiral wrap and lower on an outer end side; and a wrap step portion (15E) provided on a wall portion of the fixed scroll (15) that corresponds to the end plate step portion (16E) so that a height of the wall portion is lower on the center portion side of the spiral and higher on the outer end side; wherein the orbiting scroll (16) is treated for surface hardening and the fixed scroll (15) is not treated for surface hardening.
    Type: Grant
    Filed: January 27, 2021
    Date of Patent: March 26, 2024
    Assignee: MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD.
    Inventors: Hajime Sato, Makoto Takeuchi, Genta Yoshikawa, Kazuhide Watanabe, Katsuhiro Fujita, Takayuki Hagita, Takayuki Kuwahara
  • Patent number: 11918052
    Abstract: A control unit for an inductive heating apparatus configured to inductively heat a susceptor of an aerosol forming body includes the susceptor and an aerosol source, the control unit is configured to in a case where the susceptor ceases to be detected while the inductive heating is being executed, stop the inductive heating or notifying an error.
    Type: Grant
    Filed: November 29, 2022
    Date of Patent: March 5, 2024
    Assignee: JAPAN TOBACCO INC.
    Inventor: Hajime Fujita
  • Patent number: 11918049
    Abstract: A smoking system that smoothly switches between a charge mode and a direct heating mode is provided with: a secondary device with a load for atomizing an aerosol source or heating a flavor source and a power source capable of supplying power to the load; a primary device which, when connected to the secondary device, is capable of supplying power to the load and the power source; and a control unit capable of executing a first mode in which the power is supplied from the primary device to the load and a second mode in which the power is supplied from the primary device to the power source. During a first transition, which is from the first mode to the second mode, and/or a second transition, which is from the second mode to the first mode, the control unit executes, in a time between the modes, a transition mode involving a transition time for changing a preset variable relating to power supply.
    Type: Grant
    Filed: August 15, 2022
    Date of Patent: March 5, 2024
    Assignee: JAPAN TOBACCO INC.
    Inventors: Takuma Nakano, Hajime Fujita
  • Publication number: 20240016231
    Abstract: A control unit for an inductive heating apparatus configured to inductively heat a susceptor of an aerosol forming body includes the susceptor and an aerosol source, the control unit is configured to in a case where the susceptor ceases to be detected while the inductive heating is being executed, stop the inductive heating or notifying an error.
    Type: Application
    Filed: September 25, 2023
    Publication date: January 18, 2024
    Applicant: Japan Tobacco Inc.
    Inventor: Hajime FUJITA
  • Patent number: 11864595
    Abstract: An aerosol generation device includes: a load configured to heat an aerosol generation article by using power that is supplied from a power source, the aerosol generation article comprising an aerosol-forming substrate configured to hold or carry at least one of an aerosol source and a flavor source; and a control unit configured to acquire a temperature of the load and to control the power that is supplied from the power source to the load by feedback control. The control unit is configured to determine the power that is supplied from the power source to the load, based on comparison between an operation value obtained in the feedback control and a predetermined value.
    Type: Grant
    Filed: September 25, 2020
    Date of Patent: January 9, 2024
    Assignee: JAPAN TOBACCO INC.
    Inventors: Takuma Nakano, Hajime Fujita
  • Patent number: 11864594
    Abstract: An aerosol generation device includes: a load configured to heat an aerosol generation article including an aerosol-forming substrate configured to hold or carry at least one of an aerosol source and a flavor source; and a controller configured to control power that is supplied from a power source to the load. When a phase where a temperature of the load is equal to or higher than a value at which a predetermined amount or more of aerosols is capable of being generated from the aerosol generation article, the controller is configured to acquire the temperature of the load and a degree of progress of the phase, to execute feedback control so that the temperature of the load converges to a predetermined temperature, and to increase a gain in the feedback control or an upper limit value of the power, as the degree of progress progresses, in the feedback control.
    Type: Grant
    Filed: September 25, 2020
    Date of Patent: January 9, 2024
    Assignee: JAPAN TOBACCO INC.
    Inventors: Takuma Nakano, Hajime Fujita
  • Patent number: 11856982
    Abstract: A control unit for an inductive heating apparatus configured to inductively heat a susceptor of an aerosol forming body includes the susceptor and an aerosol source, the control unit is configured to in a case where the susceptor ceases to be detected while the inductive heating is being executed, stop the inductive heating or notifying an error.
    Type: Grant
    Filed: November 29, 2022
    Date of Patent: January 2, 2024
    Assignee: JAPAN TOBACCO INC.
    Inventor: Hajime Fujita
  • Patent number: 11832653
    Abstract: An inductive heating apparatus for inductively heating a susceptor of an aerosol forming body, which includes the susceptor and an aerosol source, includes: a power supply, an alternating current generation circuit that generates alternating current from power supplied from the power supply; an inductive heating circuit for inductively heating the susceptor, and a control unit configured to detect the susceptor based on an impedance of a circuit to which the alternating current generated by the alternating current generation circuit is supplied, and start the inductive heating in response to the susceptor being detected.
    Type: Grant
    Filed: November 29, 2022
    Date of Patent: December 5, 2023
    Assignee: JAPAN TOBACCO INC.
    Inventor: Hajime Fujita
  • Patent number: 11771140
    Abstract: An inhalation component generation device includes a load configured to vaporize or atomize an inhalation component source with electric power from a power supply, and a control unit configured to be capable of acquiring a value related to an operation amount of the load and a voltage value of the power supply. The control unit is configured to be capable of estimating or detecting at least one of degradation and failure of the power supply based on the value related to the operation amount of the load operated in a period in which the acquired voltage value of the power supply is in a predetermined voltage range.
    Type: Grant
    Filed: April 17, 2020
    Date of Patent: October 3, 2023
    Assignee: JAPAN TOBACCO INC.
    Inventors: Takeshi Akao, Takuma Nakano, Hajime Fujita, Manabu Yamada
  • Patent number: 11758945
    Abstract: A power supply unit for an aerosol inhaler includes: a power supply capable of supplying power to a load capable of generating aerosol from an aerosol source; and a housing accommodating the power supply, in which the housing accommodates at least one power reception coil capable of receiving the power in a wireless manner in both a case where the housing is placed horizontally and a case where the housing is placed vertically.
    Type: Grant
    Filed: November 4, 2020
    Date of Patent: September 19, 2023
    Assignee: JAPAN TOBACCO INC.
    Inventors: Nobuhiro Tatsuta, Hajime Fujita
  • Patent number: 11744291
    Abstract: An inhalation component generating device includes: a power supply; a load group including a load configured to evaporate or atomize an inhalation component source by power from the power supply; and a control circuit configured to be able to acquire a voltage value of the power supply. The control circuit performs: a process (a1) of acquiring a closed circuit voltage value of the power supply in a closed circuit state in which the power supply and the load group are electrically connected; and a process (a2) of comparing the acquired closed circuit voltage value and a first reference voltage value, and determining that the power supply is in a small residual amount state in a case where the closed circuit voltage value is smaller than or is equal to or smaller than the reference voltage value.
    Type: Grant
    Filed: October 3, 2019
    Date of Patent: September 5, 2023
    Assignee: JAPAN TOBACCO INC.
    Inventors: Takeshi Akao, Manabu Yamada, Hajime Fujita
  • Patent number: 11729865
    Abstract: Provided is a battery unit including: a power supply; a detector configured to detect an output voltage of the power supply; a connecting configured to be connectable with a load for atomizing an aerosol source or heating a flavor source; and a controller capable of executing a power supply mode in which electric power is supplied to the load from the power supply. The controller executes a specific control different from the supply of electric power to the load based on am amount of change in the output voltage per a predetermined time period in the power supply mode.
    Type: Grant
    Filed: September 30, 2022
    Date of Patent: August 15, 2023
    Assignee: JAPAN TOBACCO INC.
    Inventors: Manabu Takeuchi, Takaya Takahashi, Manabu Yamada, Hajime Fujita
  • Publication number: 20230240379
    Abstract: An inhalation component generating device includes: a power supply; a load group including a load configured to evaporate or atomize an inhalation component source by power from the power supply; and a control circuit configured to be able to acquire a voltage value of the power supply. The control circuit performs: a process (al) of acquiring a closed circuit voltage value of the power supply in a closed circuit state in which the power supply and the load group are electrically connected; and a process (a2) of comparing the acquired closed circuit voltage value and a first reference voltage value, and determining that the power supply is in a small residual amount state in a case where the closed circuit voltage value is smaller than or is equal to or smaller than the reference voltage value.
    Type: Application
    Filed: April 7, 2023
    Publication date: August 3, 2023
    Applicant: JAPAN TOBACCO INC.
    Inventors: Takeshi AKAO, Manabu YAMADA, Hajime FUJITA