IP Library › Granted Patent US 12,396,487
Granted Patent B2
US 12,396,487 · App. 18/616,622 · Granted Aug 26, 2025

Control device for aerosol inhalation device and aerosol inhalation device

Inventors: Kazuma Mizuguchi (Tokyo, JP); Takeshi Akao (Tokyo, JP)
Assignee: JAPAN TABACCO INC.
A24F40/50H02M3/158A61M15/06
View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 12,396,487
App. No.
18/616,622
Granted
Aug 26, 2025
Kind
B2
Abstract

Control device for aerosol inhalation device, includes operational amplifier including output terminal configured to generate voltage according to voltage applied to load configured to heat aerosol source and having correlation between temperature and electrical resistance value, control unit including input terminal and configured to perform processing based on voltage applied to the input terminal, and voltage dividing circuit configured to electrically connect the output terminal of the operational amplifier and the input terminal of the control unit. Power supply voltage of the operational amplifier is higher than power supply voltage of the control unit, and equals voltage applied to aerosol generation circuit including the load, and one of inverting input terminal and noninverting input terminal of the operational amplifier is electrically connected to the aerosol generation circuit.

Claims (14)

1. An aerosol inhalation device, comprising:

an operational amplifier including an output terminal configured to generate a voltage according to a power applied to a load configured to heat an aerosol source and having a correlation between a temperature and an electrical resistance value;

a controller including an input terminal and configured to perform processing based on a voltage applied to the input terminal;

an RC circuit connected to the output terminal of the operational amplifier and configured to generate a voltage supplied to the input terminal of the controller;

a first switch electrically connected between the power supply and the load; and

a first resistor electrically connected in series with the first switch, wherein

a power supply voltage of the operational amplifier is higher than a power supply voltage of the controller, and

an inverting input terminal of the operational amplifier is electrically connected to the aerosol generation circuit.

2. The device according to claim 1 , wherein the RC circuit is configured such that the voltage applied to the input terminal of the controller is not more than a power supply voltage of the controller.

3. The device according to claim 1 , wherein an amplification factor of the operational amplifier is set such that the voltage applied to the input terminal of the controller is not more than the power supply voltage of the controller.

4. The device according to claim 1 , wherein the device is configured to removably receive an aerosol generating article comprising the load and an aerosol base material, and

wherein the controller is configured to detect an exchange of the aerosol generating article based on output of the operational amplifier.

5. The device according to claim 2 , wherein the device is configured to removably receive an aerosol generating article comprising the load and an aerosol base material, and

wherein the controller is configured to detect an exchange of the aerosol generating article based on output of the operational amplifier.

Priority Claims (1)
JP 2019-102263 · May 31, 2019 · national
Continuity (3)
Continuation 17570402 · Jan 7, 2022
Continuation 16885337 · May 28, 2020
Related Publication 20240225116A1 · Jul 11, 2024
References Cited (57)
US 3831003A · Foerster · 1974 [cited by applicant]
US 5734914A · Nakamura et al. · 1998 [cited by applicant]
US 10932495B2 · Reevell · 2021 [cited by applicant]
US 20040056210A1 · Scherer · 2004 [cited by applicant]
US 20150359263A1 · Bellinger · 2015 [cited by applicant]
US 20160174611A1 · Monsees et al. · 2016 [cited by applicant]
US 20160316822A1 · Liu · 2016 [cited by applicant]
US 20160374397A1 · Jordan et al. · 2016 [cited by applicant]
US 20170245553A1 · Reevell · 2017 [cited by applicant]
US 20170360097A1 · Xiang · 2017 [cited by applicant]
US 20180000160A1 · Taschner et al. · 2018 [cited by applicant]
US 20180027878A1 · Dendy et al. · 2018 [cited by applicant]
US 20180070641A1 · Batista et al. · 2018 [cited by applicant]
US 20190320717A1 · Tabasso et al. · 2019 [cited by applicant]
US 20200237005A1 · Lim et al. · 2020 [cited by applicant]
US 20200367570A1 · Batista et al. · 2020 [cited by applicant]
US 20210401061A1 · Davis et al. · 2021 [cited by applicant]
CN 207251178U · 2018 [cited by applicant]
CN 108430244A · 2018 [cited by applicant]
CN 208354611U · 2019 [cited by applicant]
CN 109730360A · 2019 [cited by applicant]
EP 3701813A1 · 2020 [cited by applicant]
JP 60047966A · 1985 [cited by applicant]
JP 03030734U · 1991 [cited by applicant]
JP 08241240A · 1996 [cited by applicant]
JP 11227439A · 1999 [cited by applicant]
JP 2006184241A · 2006 [cited by applicant]
JP 2009159121A · 2009 [cited by applicant]
JP 2011257928A · 2011 [cited by applicant]
JP 2014501105A · 2014 [cited by applicant]
JP 2017501805A · 2017 [cited by applicant]
JP 2017503520A · 2017 [cited by applicant]
JP 2018526983A · 2018 [cited by applicant]
WO 2012085203A1 · 2012 [cited by applicant]
WO 2012085207A1 · 2012 [cited by applicant]
WO 2015045534A1 · 2015 [cited by applicant]
WO 2015100361A1 · 2015 [cited by applicant]
WO 2017015042A1 · 2017 [cited by applicant]
WO 2017144191A1 · 2017 [cited by applicant]
WO 2017144374A1 · 2017 [cited by applicant]
WO 2018001746A1 · 2018 [cited by applicant]
WO 2019082262A1 · 2019 [cited by applicant]
WO 2019082264A1 · 2019 [cited by applicant]
Notification of Reasons for Refusal received for Japanese Patent Application No. 2019-102263, mailed on Sep. 6, 2019, 8 pages including English Translation. [cited by applicant]
Decision to Grant a Patent received for Japanese Patent Application No. 2019-102263, mailed on Jan. 29, 2020, 5 pages including English Translation. [cited by applicant]
Notification of Reasons for Refusal received for Japanese Patent Application No. 2019-102238, mailed on Aug. 14, 2019, 6 pages including English Translation. [cited by applicant]
Decision to Grant a Patent received for Japanese Patent Application No. 2019-102238, mailed on Oct. 7, 2019,5 pages including English Translation. [cited by applicant]
Notification of Reasons for Refusal received for Japanese Patent Application No. 2019-102382, mailed on Jul. 16, 2019, 6 pages including English Translation. [cited by applicant]
Decision to Grant a Patent received for Japanese Patent Application No. 2019-102382, mailed on Nov. 7, 2019, 5 pages including English Translation. [cited by applicant]
Extended European search report issued on Oct. 14, 2020, in corresponding European patent Application No. 20176500.5, 11 pages. [cited by applicant]
Extended European Search Report issued Oct. 22, 2020 in European Patent Application No. 20176507.0, 9 pages. [cited by applicant]
Extended European search report issued on Oct. 28, 2020, in corresponding European patent Application No. 20176508.8, 11 pages. [cited by applicant]
Office Action dated Nov. 18, 2020, in corresponding U.S. Appl. No. 16/885,343, 14 pages. [cited by applicant]
Chinese Office Action dated Apr. 28, 2021, concerning Chinese Patent Application No. 202010459771.2. [cited by applicant]
U.S. Office Action issued May 13, 2022 in related U.S. Appl. No. 16/885,343, 37 pages. [cited by applicant]
U.S. Office Action issued Jul. 18, 2023 in U.S. Appl. No. 16/885,343, 34 pages. [cited by applicant]
Extended Communication pursuant to Article 94(3) EPC issued Jun. 12, 2025 in corresponding European Patent Application No. 23 151 103.1, 6 pages. [cited by applicant]