(19)
(11) EP 4 531 499 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
11.06.2025 Bulletin 2025/24

(43) Date of publication A2:
02.04.2025 Bulletin 2025/14

(21) Application number: 25157500.7

(22) Date of filing: 10.01.2020
(51) International Patent Classification (IPC): 
A24F 40/46(2020.01)
A24F 40/57(2020.01)
H05B 3/06(2006.01)
A24F 40/10(2020.01)
A24F 40/30(2020.01)
A24F 40/65(2020.01)
 A24F 40/485(2020.01)
H05B 3/12(2006.01)
H05B 3/46(2006.01)
A24F 40/20(2020.01)
A24F 40/60(2020.01)
(52) Cooperative Patent Classification (CPC):
A24F 40/10; A24F 40/20; A24F 40/30; A24F 40/46; A24F 40/57; A24F 40/60; A24F 40/65; H05B 3/06; H05B 3/46; H05B 2203/02; H05B 2203/022; A24F 40/485; H05B 2203/014
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

(30) Priority: 11.01.2019 US 201962791709 P
11.03.2019 US 201962816452 P
10.09.2019 US 201962898522 P

(62) Application number of the earlier application in accordance with Art. 76 EPC:
20704967.7 / 3908135

(71) Applicant: Juul Labs, Inc.
Washington DC 20004 (US)

(72) Inventors:
  • ALSTON, William W.
    Washington, 20004 (US)
  • Bowen, Adam
    Washington, 20004 (US)
  • Garcia-Doty, Ian
    Washington DC, 20004 (US)
  • Kurzman, Joshua A.
    Washington DC, 20004 (US)
  • Monsees, James
    Washington DC, 20004 (US)
  • Vieira, Paul R
    Washington DC, 20004 (US)

(74) Representative: Thum, Bernhard 
Thum & Partner Thum Mötsch Weickert Patentanwälte PartG mbB Siebertstr. 6
81675 München
81675 München (DE)

   


(54) VAPORIZER INCLUDING POSITIVE TEMPERATURE COEFFICIENT OF RESISTIVITY HEATER


(57) A vaporizer device includes a housing including an air inlet, a heating element within the housing and a heat exchanger. The heating element includes a nonlinear positive temperature coefficient of resistance material. The heat exchanger is thermally coupled to the heating element and arranged to receive airflow from the air inlet. The heat exchanger is configured to transfer heat between the heating element and the airflow to produce a heated airflow. The heated airflow exiting the heat exchanger is configured to vaporize a vaporizable material. Related apparatus, systems, techniques and articles are also described.







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