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: 20220015446
    Abstract: This inhalation component generation device comprises: a load which vaporizes or atomizes an inhalation component source using power from a power supply; and a control unit. The control unit comprises: a voltage sensor which uses a predefined correlation to convert the analog voltage value of a power supply to a digital voltage value and outputs the digital voltage value; and a power control unit which controls the supply of power from the power supply to the load on the basis of the digital voltage value. The control unit is configured to be capable of calibrating the correlation on the basis of changes in the digital voltage value or the analog voltage value obtained during charging of the power supply.
    Type: Application
    Filed: September 30, 2021
    Publication date: January 20, 2022
    Applicant: JAPAN TOBACCO INC.
    Inventors: Takeshi AKAO, Hajime FUJITA, Manabu YAMADA
  • Publication number: 20220007738
    Abstract: A control unit of an aerosol generation device includes a processing device configured to acquire a remaining amount of an aerosol source. When the remaining amount of the aerosol source is smaller than a threshold value, the processing device suppresses discharge from a power supply to an atomizer configured to atomize the aerosol source, and when the remaining amount of the aerosol source is equal to or greater than the threshold value, the processing device controls the discharge from the power supply to the atomizer so as to make an amount of the aerosol source to be atomized different, based on the remaining amount of the aerosol source.
    Type: Application
    Filed: July 8, 2021
    Publication date: January 13, 2022
    Applicant: Japan Tobacco Inc.
    Inventors: Takuma NAKANO, Yutaka KAIHATSU, Keiji MARUBASHI, Ikuo FUJINAGA, Hajime FUJITA
  • Publication number: 20220007737
    Abstract: A control unit of an aerosol generation device includes: a flow rate sensor configured to output a flow rate of inhalation by a user; and a processing device configured to acquire an atomization command of an aerosol source by an atomizer. The processing device is configured: to control discharge from a power supply to the atomizer, based on the atomization command; to acquire a flow rate per unit time during the inhalation corresponding to each atomization command, based on an output of the flow rate sensor; to acquire an inhalation time that is a length of the inhalation corresponding to each atomization command; and to acquire at least one of a remaining amount of a flavor source configured to add flavor to aerosol generated from the aerosol source and a consumed amount of the flavor source, based on the flow rate per unit time and the inhalation time.
    Type: Application
    Filed: July 8, 2021
    Publication date: January 13, 2022
    Applicant: Japan Tobacco Inc.
    Inventors: Takuma NAKANO, Yutaka KAIHATSU, Keiji MARUBASHI, Ikuo FUJINAGA, Hajime FUJITA
  • Publication number: 20220007739
    Abstract: A control unit of an aerosol generation device includes a processing device configured to acquire a remaining amount of at least one of an aerosol source and a flavor source configured to add flavor to aerosol generated from the aerosol source. When the remaining amount is equal to or greater than a threshold value, the processing device permits first discharge that is discharge from a power supply to an atomizer configured to atomize the aerosol source and second discharge that is discharge from the power supply to an adjustor capable of adjusting an amount of flavor that is added to the aerosol by the flavor source, and when the remaining amount is smaller than the threshold value, the processing device suppresses any one of the first discharge and the second discharge.
    Type: Application
    Filed: July 8, 2021
    Publication date: January 13, 2022
    Applicant: Japan Tobacco Inc.
    Inventors: Takuma NAKANO, Yutaka KAIHATSU, Keiji MARUBASHI, Ikuo FUJINAGA, Hajime FUJITA
  • Patent number: 11223077
    Abstract: A power supply unit for an aerosol inhaler includes: a power supply able to discharge power to a load for generating an aerosol from an aerosol source; and a control unit configured to perform a plurality of types of processes for diagnosing a state of the power supply. The plurality of types of processes are different in at least one of time which is required to obtain a result of diagnosis and information which is used to obtain a result of diagnosis.
    Type: Grant
    Filed: December 26, 2019
    Date of Patent: January 11, 2022
    Assignee: JAPAN TOBACCO INC.
    Inventors: Takeshi Akao, Manabu Yamada, Hajime Fujita
  • Patent number: 11202343
    Abstract: Provided is an aerosol generating device which is capable of stopping aerosol generation at an appropriate timing. This aerosol generating device includes a power source which supplies power in order to atomize an aerosol source and/or heat a flavor source; a sensor which outputs a measurement value for controlling the power supplied; and a circuitry which controls the power supplied from the power source on the basis of the measurement value. The circuitry controls to increase a power supply amount per unit time in response to a first condition that the measured value is equal to or larger than a first threshold being satisfied, and to decrease the power supply amount per unit time in response to a second condition that the measured value is less than a second threshold greater than the first threshold and a third condition which is different from the first condition and the second condition being satisfied.
    Type: Grant
    Filed: April 26, 2019
    Date of Patent: December 14, 2021
    Assignee: JAPAN TOBACCO INC.
    Inventors: Takuma Nakano, Hajime Fujita
  • Patent number: 11202342
    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: August 28, 2019
    Date of Patent: December 14, 2021
    Assignee: JAPAN TOBACCO INC.
    Inventors: Manabu Takeuchi, Takaya Takahashi, Manabu Yamada, Hajime Fujita
  • Patent number: 11160312
    Abstract: Provided is an aerosol generating device that can accurately detect the shortage or exhaustion of an aerosol source at low cost. The aerosol generating device includes: a reservoir that stores an aerosol source or an aerosol base that holds an aerosol source; a load that atomizes the aerosol source with heat generated by using power supplied from a power source; a sensor that outputs a value related to the temperature of the load; and a control unit configured to determine the occurrence of exhaustion of the aerosol source in the reservoir or the aerosol base on the basis of the cooling velocity derived from the output value of the sensor in a cooling process after the load has been heated to a temperature higher than or equal to a temperature at which the aerosol source can be atomized.
    Type: Grant
    Filed: December 21, 2020
    Date of Patent: November 2, 2021
    Assignee: JAPAN TOBACCO INC.
    Inventors: Takeshi Akao, Kazuma Mizuguchi, Hajime Fujita
  • Patent number: 11160311
    Abstract: This inhalation component generation device comprises: a load which vaporizes or atomizes an inhalation component source using power from a power supply; and a control unit. The control unit comprises: a voltage sensor which uses a predefined correlation to convert the analog voltage value of a power supply to a digital voltage value and outputs the digital voltage value; and a power control unit which controls the supply of power from the power supply to the load on the basis of the digital voltage value. The control unit is configured to be capable of calibrating the correlation on the basis of changes in the digital voltage value or the analog voltage value obtained during charging of the power supply.
    Type: Grant
    Filed: April 17, 2020
    Date of Patent: November 2, 2021
    Assignee: JAPAN TOBACCO INC.
    Inventors: Takeshi Akao, Hajime Fujita, Manabu Yamada
  • Patent number: 11160313
    Abstract: An aerosol inhaler includes: a first branch circuit including a load, a first resistor, and a first node; a second branch circuit including a second resistor, a third resistor, and a second node; an operational amplifier of which a non-inverting input terminal is connected to one of the first node and the second node, and of which an inverting input terminal is connected to the other of the first node and the second node; and a control device having an upper limit temperature and a lower limit temperature. A differential input of the operational amplifier is larger than potential of a negative power supply terminal of the operational amplifier or a minimum value acquirable by the operational amplifier in a first temperature range, and is equal to the potential of the negative power supply terminal of the operational amplifier or the minimum value in a second temperature range.
    Type: Grant
    Filed: March 31, 2021
    Date of Patent: November 2, 2021
    Assignee: JAPAN TOBACCO INC.
    Inventors: Keiji Marubashi, Hajime Fujita
  • Patent number: 11140922
    Abstract: To provide a control device for an aerosol inhalator capable of determining a residual amount of an aerosol source without being influenced by changes in temperature of a heater due to inhalation.
    Type: Grant
    Filed: December 16, 2019
    Date of Patent: October 12, 2021
    Assignee: JAPAN TOBACCO INC.
    Inventors: Kazuma Mizuguchi, Takeshi Akao, Takuma Nakano, Masayuki Tsuji, Hajime Fujita
  • Publication number: 20210307406
    Abstract: An aerosol inhaler includes: a first branch circuit including a load, a first resistor, and a first node; a second branch circuit including a second resistor, a third resistor, and a second node; an operational amplifier of which a non-inverting input terminal is connected to one of the first node and the second node, and of which an inverting input terminal is connected to the other of the first node and the second node; and a control device having an upper limit temperature and a lower limit temperature. A differential input of the operational amplifier is larger than potential of a negative power supply terminal of the operational amplifier or a minimum value acquirable by the operational amplifier in a first temperature range, and is equal to the potential of the negative power supply terminal of the operational amplifier or the minimum value in a second temperature range.
    Type: Application
    Filed: March 31, 2021
    Publication date: October 7, 2021
    Applicant: Japan Tobacco Inc.
    Inventors: Keiji MARUBASHI, Hajime FUJITA
  • Patent number: 11134721
    Abstract: A power supply unit for an aerosol inhaler includes: a first series circuit; a second series circuit connected in parallel with the first series circuit; a first operational amplifier including a non-inversion input terminal connected to one of a first node and a second node, and an inversion input terminal connected to the other of the first node and the second node; and an adjustment circuit connected to the first operational amplifier and configured to prevent a differential input value of the first operational amplifier from being equal to a potential of a negative power supply terminal of the first operational amplifier or a minimum value acquirable by the first operational amplifier, in a state where a potential of the node connected to the non-inversion input terminal is less than a potential of the node connected to the inversion input terminal.
    Type: Grant
    Filed: March 4, 2021
    Date of Patent: October 5, 2021
    Assignee: Japan Tobacco Inc.
    Inventors: Keiji Marubashi, Hajime Fujita
  • Patent number: 11134720
    Abstract: A power supply unit for an aerosol inhaler includes a power supply dischargeable to a load for heating an aerosol generation source, a first sensor configured to output a signal indicating an aerosol generation request, and a processing device configured to acquire the signal. The processing device causes the power supply unit to operate in a first mode in which a maximum power consumption amount is a first amount and a second mode in which a maximum power consumption amount is smaller than the first amount, causes the power supply unit to operate in the second mode when a period during which the signal is not acquired exceeds a predetermined time in the first mode, and causes the power supply unit to operate such that a maximum power consumption amount is less than the first amount at a timing before the period exceeds the predetermined time in the first mode.
    Type: Grant
    Filed: March 4, 2021
    Date of Patent: October 5, 2021
    Assignee: JAPAN TOBACCO INC.
    Inventors: Takuma Nakano, Keiji Marubashi, Hajime Fujita
  • Patent number: 11129420
    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 connector serving as a physical and electrical contact with an external power supply, in which the power supply unit for the aerosol inhaler further includes: a power reception coil capable of receiving the power in a wireless manner.
    Type: Grant
    Filed: November 4, 2020
    Date of Patent: September 28, 2021
    Assignee: JAPAN TOBACCO INC.
    Inventors: Nobuhiro Tatsuta, Hajime Fujita
  • Patent number: 11122837
    Abstract: A power supply unit for an aerosol suction device includes: a power supply capable of discharging to a load for generating an aerosol from an aerosol generation source; and a controller capable of controlling charging and discharging of the power supply. The controller is capable of operating in a charging mode for controlling charging of the power supply, a first mode different from the charging mode, and a second mode different from the charging mode and the first mode, and is capable of executing diagnosis processes of the power supply in each of the first mode and the second mode.
    Type: Grant
    Filed: July 16, 2020
    Date of Patent: September 21, 2021
    Assignee: JAPAN TOBACCO INC.
    Inventors: Kazuma Mizuguchi, Manabu Yamada, Ryoji Fujita, Hajime Fujita
  • Publication number: 20210282466
    Abstract: An inhalation device controller is configured to control an atomizer including a container configured to hold an aerosol source of a liquid, a heater, and a transport portion configured to transport the aerosol source from the container to a heating area by the heater. The controller includes a control circuit configured to monitor a physical amount correlated with a temperature of the heater and configured to control power to be supplied to the atomizer such that the physical amount under monitoring approaches a target value. The target value is set such that the temperature of the heater during heating of the aerosol source falls within a range of 210° C. to 230° C.
    Type: Application
    Filed: March 9, 2021
    Publication date: September 16, 2021
    Applicant: Japan Tobacco Inc.
    Inventors: Keiji MARUBASHI, Hajime FUJITA
  • Publication number: 20210274852
    Abstract: A power supply unit for an aerosol inhaler includes: a first series circuit; a second series circuit connected in parallel with the first series circuit; a first operational amplifier including a non-inversion input terminal connected to one of a first node and a second node, and an inversion input terminal connected to the other of the first node and the second node; and an adjustment circuit connected to the first operational amplifier and configured to prevent a differential input value of the first operational amplifier from being equal to a potential of a negative power supply terminal of the first operational amplifier or a minimum value acquirable by the first operational amplifier, in a state where a potential of the node connected to the non-inversion input terminal is less than a potential of the node connected to the inversion input terminal.
    Type: Application
    Filed: March 4, 2021
    Publication date: September 9, 2021
    Applicant: Japan Tobacco Inc.
    Inventors: Keiji MARUBASHI, Hajime FUJITA
  • Publication number: 20210274851
    Abstract: A power supply unit for an aerosol inhaler includes a power supply dischargeable to a load for heating an aerosol generation source, a first sensor configured to output a signal indicating an aerosol generation request, and a processing device configured to acquire the signal. The processing device causes the power supply unit to operate in a first mode in which a maximum power consumption amount is a first amount and a second mode in which a maximum power consumption amount is smaller than the first amount, causes the power supply unit to operate in the second mode when a period during which the signal is not acquired exceeds a predetermined time in the first mode, and causes the power supply unit to operate such that a maximum power consumption amount is less than the first amount at a timing before the period exceeds the predetermined time in the first mode.
    Type: Application
    Filed: March 4, 2021
    Publication date: September 9, 2021
    Applicant: Japan Tobacco Inc.
    Inventors: Takuma NAKANO, Keiji MARUBASHI, Hajime FUJITA
  • Publication number: 20210274853
    Abstract: A power supply unit for an aerosol inhaler, which includes a power supply configured to discharge electricity to a load that is configured to heat an aerosol generation source and has a correlation between temperature and electric resistance values, includes: a first element connected in series to the load and having a first electric resistance value; a second series circuit that includes a second element having a second electric resistance value, and a third element connected in series to the second element and having a third electric resistance value, the second series circuit being connected in parallel with a first series circuit including the load and the first element; and an operational amplifier connected to the first series circuit and the second series circuit. The first electric resistance value is less than an electric resistance value of the load.
    Type: Application
    Filed: March 4, 2021
    Publication date: September 9, 2021
    Applicant: Japan Tobacco Inc.
    Inventors: Keiji MARUBASHI, Hajime FUJITA