Patents by Inventor Keiji MARUBASHI

Keiji MARUBASHI 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: 11963555
    Abstract: The present invention provides a controller for an inhalation device, comprising: a power supplier configured to supply power to a heater used to heat and atomize an aerosol source; a detection circuit configured to detect a resistance value of the heater; and a processor configured to execute heating processing of heating the aerosol source by controlling the power supplier in accordance with reception of an atomization request of the aerosol source, wherein the processor controls the heating processing based on the resistance value of the heater detected using the detection circuit, a reference temperature of the heater, and a reference resistance value of the heater, and updates the reference resistance value by the resistance value of the heater detected using the detection circuit after an end of the heating processing and before the reception of the next atomization request.
    Type: Grant
    Filed: March 2, 2021
    Date of Patent: April 23, 2024
    Assignee: JAPAN TOBACCO INC.
    Inventor: Keiji Marubashi
  • Patent number: 11812789
    Abstract: A power supply unit for an aerosol generation device through which flavored aerosol is inhaled includes: a power supply configured to discharge electricity to an atomizer configured to atomize an aerosol source and a heater configured to heat a flavor source that adds a flavor component to aerosol generated from the aerosol source; and a processing device configured to acquire a flow rate of inhalation of a user. When the inhalation of the user is detected, the processing device discharges electricity from the power supply to the atomizer so as to generate aerosol. The processing device controls power to be discharged to the heater based on the flow rate such that a concentration of a flavor component contained in a fluid inhaled by the user becomes a target value.
    Type: Grant
    Filed: September 30, 2021
    Date of Patent: November 14, 2023
    Assignee: JAPAN TOBACCO INC.
    Inventor: Keiji Marubashi
  • Publication number: 20230095903
    Abstract: A power supply unit for an aerosol generation device includes a notification unit and a controller. The controller is configured to execute flavor information acquisition processing of acquiring information on whether an aerosol source and a flavor source contain menthol respectively. The controller is configured execute the flavor information acquisition processing when at least one of a change from a state in which a first load is not connected to a first connector to a state in which the first load is connected to the first connector and a change from a state in which the second load is not capable of heating the flavor source to a state in which the second load is capable of heating the flavor source is detected.
    Type: Application
    Filed: November 29, 2022
    Publication date: March 30, 2023
    Applicant: JAPAN TOBACCO INC.
    Inventors: Yutaka KAIHATSU, Hirofumi FUJIKURA, Takuma NAKANO, Keiji MARUBASHI, Ikuo FUJINAGA, Hajime FUJITA
  • Publication number: 20230101245
    Abstract: A power supply unit for an aerosol generation device includes a controller configured to control notifications issued by a first notification unit and a second notification unit. The controller is configured to execute a flavor determination for determining whether an aerosol source and a flavor source contain menthol, cause the first notification unit and the second notification unit to notify a user of a result of the flavor determination, when the flavor determination is executed before generation of aerosol to which the flavor of the flavor source is added, and cause only the first notification unit of the first notification unit and the second notification unit to notify the user of a result of the latest flavor determination, when the flavor determination is not executed before generation of the aerosol to which the flavor of the flavor source is added.
    Type: Application
    Filed: November 29, 2022
    Publication date: March 30, 2023
    Applicant: Japan Tobacco Inc.
    Inventors: Yutaka KAIHATSU, Hirofumi FUJIKURA, Takuma NAKANO, Keiji MARUBASHI, Ikuo FUJINAGA, Hajime FUJITA
  • Patent number: 11612188
    Abstract: A power supply unit for an aerosol generation device, includes: a power supply configured to discharge electricity to a first load that heats an aerosol source; a resistance element configured to be connected in series to the first load and configured to detect an electric resistance value of the first load; and a processing device. The processing device performs first discharging control of discharging electricity from the power supply to the first load to generate aerosol, and second discharging control of discharging electricity from the power supply to a series circuit formed of the first load and the resistance element to detect the electric resistance value of the first load; and in a specific period, other than a period when the first discharging control and the second discharging control are performed, the processing device performs third discharging control of discharging electricity from the power supply to the series circuit.
    Type: Grant
    Filed: September 30, 2021
    Date of Patent: March 28, 2023
    Assignee: JAPAN TOBACCO INC.
    Inventor: Keiji Marubashi
  • Publication number: 20230086971
    Abstract: A power supply unit of an aerosol generating device includes: an accommodating portion configured to accommodate a columnar cartridge that stores an aerosol source. A first electrode portion including a plurality of electrodes is provided on an end surface of the cartridge, the accommodating portion includes a second electrode portion in a region facing the end surface, and the second electrode portion includes more electrodes, which are contactable with the electrodes provided in the first electrode portion, than a total number of the electrodes provided in the first electrode portion.
    Type: Application
    Filed: November 29, 2022
    Publication date: March 23, 2023
    Applicant: Japan Tobacco Inc.
    Inventors: Ikuo FUJINAGA, Keiji MARUBASHI
  • Publication number: 20230091282
    Abstract: A power supply unit for an aerosol generation device includes a controller capable of controlling discharging from a power supply to a first load and a second load, and an operation unit configured to be operated by a user. The controller has a plurality of modes for operating the aerosol generation device, including a regular mode and an irregular mode, and is configured to execute first predetermined control of the aerosol generation device upon a first predetermined operation on the operation unit, operate in the regular mode upon a second predetermined operation on the operation unit, and operate in the irregular mode upon a third predetermined operation on the operation unit. A time required for the second predetermined operation and a time required for the third predetermined operation are shorter than a time required for the first predetermined operation.
    Type: Application
    Filed: November 29, 2022
    Publication date: March 23, 2023
    Applicant: JAPAN TOBACCO INC.
    Inventors: Yutaka KAIHATSU, Hirofumi FUJIKURA, Takuma NAKANO, Keiji MARUBASHI, Ikuo FUJINAGA, Hajime FUJITA
  • Patent number: 11559085
    Abstract: A power supply unit for an aerosol inhaler, which causes an aerosol generated from an aerosol source to pass through a flavor source to add a flavor component of the flavor source to the aerosol, includes: a power supply configured to be dischargeable to a first load configured to heat the aerosol source and dischargeable to a second load configured to heat the flavor source; and a processing device. The processing device determines whether the second load can heat the flavor source. When it is determined that the second load can heat the flavor source, the processing device starts or continues discharging from the power supply to the second load as second discharging before starting discharging from the power supply to the first load as first discharging.
    Type: Grant
    Filed: September 30, 2021
    Date of Patent: January 24, 2023
    Assignee: JAPAN TOBACCO INC.
    Inventors: Ikuo Fujinaga, Takuma Nakano, Hajime Fujita, Keiji Marubashi
  • Publication number: 20220264958
    Abstract: A control device controls an inhaler having a detection unit for detecting a user operation and a heating unit which generates, by heating a base material, a substance that is inhaled by a user. The control device includes a control unit for controlling the heating unit on the basis of the user operation detected by the detection unit. The control unit causes the heating unit to operate in a first heating state, if the detection unit detects a first user operation, and causes the heating unit to operate in a second heating state that is different from the first heating state, if the detection unit detects a second user operation different from the first user operation, while the heating unit is operating in the first heating state.
    Type: Application
    Filed: March 3, 2022
    Publication date: August 25, 2022
    Applicant: JAPAN TOBACCO INC.
    Inventor: Keiji MARUBASHI
  • Patent number: 11369149
    Abstract: A power supply unit for an aerosol inhaler, which causes an aerosol generated from an aerosol source to pass through a flavor source, includes: a power supply dischargeable to a first load configured to heat the aerosol source and dischargeable to a second load configured to heat the flavor source; a notification unit; a processing device; a circuit board; and a conductive portion configured to electrically connect the second load and the circuit board. The processing device is configured to detect adhesion of a liquid to the second load or entry of the liquid into the conductive portion. When the adhesion or the entry is detected, the processing device executes at least one of a notification action that causes the notification unit to execute a notification and a first fail-safe action including prevention of discharging from the power supply to the second load.
    Type: Grant
    Filed: September 30, 2021
    Date of Patent: June 28, 2022
    Assignee: JAPAN TOBACCO INC.
    Inventors: Ikuo Fujinaga, Takuma Nakano, Hajime Fujita, Keiji Marubashi
  • Patent number: 11337461
    Abstract: An inhaler controller includes a first path configured to connect a first voltage terminal to which a first voltage is supplied and a connection terminal to which a heater configured to heat an aerosol source is connected, a second path configured to connect a second voltage terminal to which a second voltage different from the first voltage is supplied and the connection terminal via a resistor, and a measurement circuit configured to measure a resistance value of the heater.
    Type: Grant
    Filed: September 2, 2021
    Date of Patent: May 24, 2022
    Assignee: JAPAN TOBACCO INC.
    Inventors: Takao Aradachi, Keiji Marubashi, Takeshi Akao, Kazuma Mizuguchi
  • Patent number: 11311053
    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: Grant
    Filed: March 4, 2021
    Date of Patent: April 26, 2022
    Assignee: JAPAN TOBACCO INC.
    Inventors: Keiji Marubashi, Hajime Fujita
  • Publication number: 20220117315
    Abstract: An inhalation device controller includes a power supply unit configured to supply power to an atomizer including a heater configured to heat an aerosol source, a detection circuit configured to detect a resistance value of the heater, a processor configured to generate a control signal in accordance with a smoothed signal generated by smoothing information obtained using the detection circuit, and a holding portion configured to hold the atomizer in a detachable state. The holding portion includes a first electrical contact contacting a third electrical contact of the atomizer, and a second electrical contact contacting a fourth electrical contact of the atomizer. Information obtained using the detection circuit is affected by stress applied to the first to fourth electrical contacts when attaching the atomizer to the holding portion.
    Type: Application
    Filed: December 29, 2021
    Publication date: April 21, 2022
    Applicant: Japan Tobacco Inc.
    Inventor: Keiji MARUBASHI
  • Publication number: 20220095689
    Abstract: A power supply unit for an aerosol inhaler, which causes an aerosol generated from an aerosol source to pass through a flavor source, includes: a power supply dischargeable to a first load configured to heat the aerosol source and dischargeable to a second load configured to heat the flavor source; a notification unit; a processing device; a circuit board; and a conductive portion configured to electrically connect the second load and the circuit board. The processing device is configured to detect adhesion of a liquid to the second load or entry of the liquid into the conductive portion. When the adhesion or the entry is detected, the processing device executes at least one of a notification action that causes the notification unit to execute a notification and a first fail-safe action including prevention of discharging from the power supply to the second load.
    Type: Application
    Filed: September 30, 2021
    Publication date: March 31, 2022
    Applicant: Japan Tobacco Inc.
    Inventors: Ikuo FUJINAGA, Takuma NAKANO, Hajime FUJITA, Keiji MARUBASHI
  • Publication number: 20220095694
    Abstract: A power supply unit for an aerosol generation device, includes: a power supply configured to discharge electricity to a first load that heats an aerosol source; a resistance element configured to be connected in series to the first load and configured to detect an electric resistance value of the first load; and a processing device. The processing device performs first discharging control of discharging electricity from the power supply to the first load to generate aerosol, and second discharging control of discharging electricity from the power supply to a series circuit formed of the first load and the resistance element to detect the electric resistance value of the first load; and in a specific period, other than a period when the first discharging control and the second discharging control are performed, the processing device performs third discharging control of discharging electricity from the power supply to the series circuit.
    Type: Application
    Filed: September 30, 2021
    Publication date: March 31, 2022
    Applicant: Japan Tobacco Inc.
    Inventor: Keiji MARUBASHI
  • Publication number: 20220095687
    Abstract: A power supply unit for an aerosol inhaler, which causes an aerosol generated from an aerosol source to pass through a flavor source to add a flavor component of the flavor source to the aerosol, includes: a power supply configured to be dischargeable to a first load configured to heat the aerosol source and dischargeable to a second load configured to heat the flavor source; and a processing device. The processing device determines whether the second load can heat the flavor source. When it is determined that the second load can heat the flavor source, the processing device starts or continues discharging from the power supply to the second load as second discharging before starting discharging from the power supply to the first load as first discharging.
    Type: Application
    Filed: September 30, 2021
    Publication date: March 31, 2022
    Applicant: Japan Tobacco Inc.
    Inventors: Ikuo FUJINAGA, Takuma NAKANO, Hajime FUJITA, Keiji MARUBASHI
  • Publication number: 20220095693
    Abstract: A power supply unit includes: a power supply configured to discharge electricity to a first load and a second load; a circuit element; a switching element configured to be switchable between a first state where the circuit element and the first load are connected in series and a second state where the circuit element and the second load are connected in series; an operational amplifier to which a voltage applied to the first load in a first series circuit formed of the circuit element and the first load in the first state is input, and to which a voltage applied to the second load in a second series circuit formed of the circuit element and the second load in the second state is input; and a processing device configured to detect a temperature of each of the first and second loads based on output of the operational amplifier.
    Type: Application
    Filed: September 29, 2021
    Publication date: March 31, 2022
    Applicant: Japan Tobacco Inc.
    Inventor: Keiji MARUBASHI
  • Publication number: 20220095690
    Abstract: A power supply unit for an aerosol generation device through which flavored aerosol is inhaled includes: a power supply configured to discharge electricity to an atomizer configured to atomize an aerosol source and a heater configured to heat a flavor source that adds a flavor component to aerosol generated from the aerosol source; and a processing device configured to acquire a flow rate of inhalation of a user. When the inhalation of the user is detected, the processing device discharges electricity from the power supply to the atomizer so as to generate aerosol. The processing device controls power to be discharged to the heater based on the flow rate such that a concentration of a flavor component contained in a fluid inhaled by the user becomes a target value.
    Type: Application
    Filed: September 30, 2021
    Publication date: March 31, 2022
    Applicant: Japan Tobacco Inc.
    Inventor: Keiji MARUBASHI
  • Publication number: 20220079246
    Abstract: A power supply unit for an aerosol inhaler includes: a first element connected in series to a load and having a first electric resistance value; a second series circuit including 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, and connected in parallel with a first series circuit including the load and the first element; and an operational amplifier in which one of a non-inverting input terminal and an inverting input terminal is connected to the first series circuit, and the other of the non-inverting input terminal and the inverting input terminal is connected to the second series circuit. Each of the first to third electric resistance values is larger than the electric resistance value of the load at a normal temperature or a temperature in a predetermined temperature range.
    Type: Application
    Filed: November 24, 2021
    Publication date: March 17, 2022
    Applicant: JAPAN TOBACCO INC.
    Inventor: Keiji MARUBASHI
  • Publication number: 20220071296
    Abstract: An inhaler controller includes a first path configured to connect a first voltage terminal to which a first voltage is supplied and a connection terminal to which a heater configured to heat an aerosol source is connected, a second path configured to connect a second voltage terminal to which a second voltage different from the first voltage is supplied and the connection terminal via a resistor, and a measurement circuit configured to measure a resistance value of the heater.
    Type: Application
    Filed: September 2, 2021
    Publication date: March 10, 2022
    Applicant: Japan Tobacco Inc.
    Inventors: Takao ARADACHI, Keiji MARUBASHI, Takeshi AKAO, Kazuma MIZUGUCHI