GB2606847A - Vaporizer device microfluidic systems and apparatuses - Google Patents

Vaporizer device microfluidic systems and apparatuses Download PDF

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Publication number
GB2606847A
GB2606847A GB2204567.8A GB202204567A GB2606847A GB 2606847 A GB2606847 A GB 2606847A GB 202204567 A GB202204567 A GB 202204567A GB 2606847 A GB2606847 A GB 2606847A
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United Kingdom
Prior art keywords
channel
capillary
vaporizer
storage chamber
vaporizable material
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB2204567.8A
Other versions
GB2606847B (en
GB202204567D0 (en
Inventor
Atkins Ariel
L Belisle Christopher
Christensen Steven
M Hoopai Alexander
Joseph Johnson Eric
King Jason
Leon Duque Esteban
Rios Matthew
James Rosser Christopher
J Stratton Andrew
Thawer Alim
P Westley James
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Juul Labs Inc
Original Assignee
Juul Labs Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US16/656,360 external-priority patent/US20200128874A1/en
Application filed by Juul Labs Inc filed Critical Juul Labs Inc
Priority to GB2314011.4A priority Critical patent/GB2620855B/en
Publication of GB202204567D0 publication Critical patent/GB202204567D0/en
Publication of GB2606847A publication Critical patent/GB2606847A/en
Application granted granted Critical
Publication of GB2606847B publication Critical patent/GB2606847B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
    • A24F40/48—Fluid transfer means, e.g. pumps
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/10—Devices using liquid inhalable precursors
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
    • A24F40/42—Cartridges or containers for inhalable precursors
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
    • A24F40/44—Wicks
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
    • A24F40/46—Shape or structure of electric heating means
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
    • A24F40/48—Fluid transfer means, e.g. pumps
    • A24F40/485—Valves; Apertures

Landscapes

  • Catching Or Destruction (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
  • Disinfection, Sterilisation Or Deodorisation Of Air (AREA)

Abstract

Microfluidic features regulate the flow of fluids in a cartridge (1320) for a vaporizer device. The microfluidic features prevent leaks of liquid vaporizable material (1302) and enhance the functioning of the cartridge when there is a differential pressure between a storage chamber (1342) containing the liquid vaporizable material and ambient conditions outside the cartridge. Related systems, apparatuses, and processes, are also described.

Claims (89)

1. A microfluidic gate for controlling flow of a liquid vaporizable material between a storage chamber and an adjoining overflow volume in a vaporizer, the microfluidic gate comprising: a plurality of openings connecting the storage chamber and the overflow volume of a collector, the plurality of openings connecting to a first channel and a second channel, wherein the first channel has a higher capillary drive than the second channel; and a pinch-off point between the plurality of openings.
2. The microfluidic gate of claim 1, wherein the microfluidic gate comprises a rim of an aperture between the storage chamber and the collector that is flatter on a first side facing the storage chamber than a second, more rounded, side facing the collector.
3. A collector configured for insertion into a cartridge housing, the collector comprising: a capillary structure configured to retain a volume of a liquid vaporizable material in fluid contact with a storage chamber of the vaporizer cartridge housing, the capillary structure comprising a microfluidic feature configured to prevent air and liquid from bypassing each other during filling and emptying of the capillary structure of the collector.
4. The collector of claim 3, further comprising the microfluidic gate of any of claims 1 and 2.
5. The collector of any of claims 3 to 4, further comprising a primary passageway providing a fluid connection between the storage chamber and an atomizer configured to convert the liquid vaporizable material to a gas-phase state, wherein the primary passageway is formed through a structure of the collector.
6. The collector of any of claims 3 to 5, wherein the capillary structure comprises a secondary passageway comprising the microfluidic feature, and wherein the microfluidic feature is configured to allow the liquid vaporizable material to move along a length of the secondary passageway only with a meniscus fully covering a cross-sectional area of the secondary passageway.
7. The collector of claim 6, wherein the cross-sectional area is sufficiently small that, for a material from which walls of the secondary passageway are formed and a composition of the liquid vaporizable material, the liquid vaporizable material preferentially wets the secondary passageway around an entire perimeter of the secondary passageway.
8. The collector of any of claims 3 to 7, wherein the storage chamber and the collector are configured to maintain a continuous column of the liquid vaporizable material in the collector in contact with the liquid vaporizable material in the storage chamber such that a reduction in pressure in the storage chamber relative to ambient pressure causes the continuous column of the liquid vaporizable material in the collector to be at least partially drawn back into the storage chamber.
9. The collector of any of claims 6 to 8, wherein the secondary passageway comprises a plurality of spaced-apart constriction points having a smaller cross-sectional area than parts of the secondary passageway between the constriction points.
10. The collector of claim 9, wherein the constriction points have a flatter surface directed along the secondary passageway toward the storage chamber and a rounder surface directed along the secondary passageway away from the storage chamber.
11. A vaporizer cartridge comprising: a cartridge housing; a storage chamber disposed within the cartridge housing and configured to contain a liquid vaporizable material; an inlet configured to allow air to enter an internal airflow path within the cartridge housing; an atomizer configured to cause conversion of at least some of the liquid vaporizable material to an inhalable state; and a collector as in any of claims 3 to 10.
12. The vaporizer cartridge of claim 11, wherein the atomizer comprises: a wicking element positioned within the internal airflow path and in fluid communication with the storage chamber, the wicking element configured to draw the liquid vaporizable material from the storage chamber under capillary action; and a heating element positioned to cause heating of the wicking element to result in conversion of at least some of the liquid vaporizable material drawn from the storage chamber to a gas-phase state.
13. The vaporizer cartridge of claim 12, wherein the inhalable state comprises an aerosol formed by condensation of at least some of the liquid vaporizable material from the gas-phase state.
14. The vaporizer cartridge of any of claims 11 to 13, wherein the cartridge housing comprises a monolithic hollow structure having a first, open end, and a second end opposite the first end.
15. The vaporizer cartridge of claim 14, wherein the collector is insertably received within the first end of the monolithic hollow structure.
16. A vaporizer comprising a vaporizer body and the vaporizer cartridge of any of claims 11 to 15, wherein the vaporizer body and the vaporizer cartridge are separably attachable to form the vaporizer.
17. The vaporizer cartridge of any of claims 11 to 16, wherein the vaporizer device further comprises a heat shield configured to surround at least a portion of the heating element and insulate the heating portion from a body of a wick housing configured to surround at least a portion of the wicking element and the heating element.
18. A collector component of a vaporizer for use with a liquid vaporizable material, the collector component comprising: a fluid passage; an outer port disposed at a first end of the fluid passage and configured to be in fluid communication with ambient air external to the vaporizer; a control vent disposed at a second end of the fluid passage distal to the first end and configured to manage flow between the fluid passage and a reservoir of the vaporizer configured to contain the liquid vaporizable material, the control vent configured to provide at least: a first fluidic resistance to pinching off of an air bubble into the reservoir when air is in the fluid passage adjacent to the control vent and a void volume within the reservoir is at a lower pressure than the ambient air external to the vaporizer; and a second fluidic resistance to allowing the liquid vaporizable material to pass the control vent into the fluid passage when the void volume within the reservoir is at a higher pressure than the ambient air external to the vaporizer; and at least a first wick feed implemented in form of a first channel to allow for the vaporizable material stored in a storage chamber to flow toward a wick placed in a wick housing positioned in an overflow volume, the control vent maintaining an equilibrium state in the storage chamber to prevent pressure in the storage chamber to increase to a point that would cause the vaporizable material to flood the wick housing.
19. The collector component of claim 18, wherein the equilibrium state is maintained by way of establishing a liquid seal at the opening of the control vent where the storage chamber communicates with the passageway in the overflow volume.
20. The collector component of claim 19, wherein the liquid seal is established and maintained at the vent by maintaining sufficient capillary pressure for the vaporizable material menisci to be formed at a portion of the control vent leading to the passageway in the overflow volume.
21. The collector component of claim 20, wherein the capillary pressure for the vaporizable material menisci is controlled by V-shaped structures forming a primary channel and a secondary channel constructing the control vent to control at least a pinch-off point at one of the primary channel or the secondary channel.
22. The collector component of claim 21, wherein the primary channel and the secondary channel have tapered geometries such that, as the menisci continue to recede, a capillary drive of the primary channel decreases at a greater rate than the capillary drive of the secondary channel.
23. The collector component of claim 22, wherein a gradual reduction in the capillary drives of the primary and the secondary channels reduces partial headspace vacuum maintained in the storage chamber.
24. The collector component of claim 23, wherein a drain pressure of the primary channel drops below a drain pressure of the secondary channel as a result of the gradual reduction in the capillary drives of the primary and the secondary channels in relations to one another.
25. The collector component of claim 24, wherein the meniscus in the primary channel continues to drain when the drain pressure of the primary channel changes, while the meniscus in the secondary channel remains static.
26. The collector component of claim 25, wherein the drain pressure involving receding contact angle of the primary channel may drop below the flooding pressure involving advancing contact angle of the secondary channel, causing the primary and secondary channels to fill with vaporizable material.
27. The collector component of claim 26, wherein, in response to an increased pressure inside the storage chamber, vaporizable material flows into the collectorâ s passageway through the vent, wherein the vent is constructed to maintain the liquid seal at all times.
28. A cartridge for a vaporizer device, the cartridge comprising: a reservoir including a reservoir chamber defined by a reservoir barrier, the reservoir being configured to contain a vaporizable material in the reservoir chamber; a vaporization chamber in communication with the reservoir and including a wicking element configured to draw the vaporizable material from the reservoir chamber to the vaporization chamber to be vaporized by a heating element; an airflow passageway that extends through the vaporization chamber; and at least one capillary channel adjacent the airflow passageway, each capillary channel of the at least one capillary channel configured to receive a fluid and direct the fluid from a first location toward a second location via capillary action.
29. The cartridge of claim 28, wherein each capillary channel of the at least one capillary channel tapers in size.
30. The cartridge of claim 29, wherein the taper in size results in an increase in capillary drive through each capillary channel of the at least one capillary channel.
31. The cartridge of any of claims 28 to 30, wherein each capillary channel of the at least one capillary channel is defined by an upper wall and a lower wall.
32. The cartridge of any of claims 28 to 31, wherein the at least one capillary channel fluidly communicates with a wick.
33. The cartridge of any of claims 28 to 32, wherein the first location is adjacent an end of the airflow passageway and a mouthpiece.
34. The cartridge of any of claims 28 to 33, wherein the at least one capillary channel collects a fluid condensate.
35. A vaporizer device, comprising: a vaporizer body including a heating element configured to heat a vaporizable material; and a cartridge configured to be releasably coupled to the vaporizer body, the cartridge comprising: a reservoir including a reservoir chamber defined by a reservoir barrier, the reservoir being configured to contain the vaporizable material in the reservoir chamber; a vaporization chamber in communication with the reservoir and including a wicking element configured to draw the vaporizable material from the reservoir chamber to the vaporization chamber to be vaporized by the heating element; an airflow passageway that extends through the vaporization chamber; and at least one capillary channel adjacent the airflow passageway, each capillary channel of the at least one capillary channel configured to receive a fluid and direct the fluid from a first location toward a second location via capillary action.
36. The vaporizer device of claim 35, wherein each capillary channel of the at least one capillary channel tapers in size.
37. The vaporizer device of claim 36, wherein the taper in size results in an increase in capillary drive through each capillary channel of the at least one capillary channel.
38. The vaporizer device of any of claims 35 to 37, wherein each capillary channel of the at least one capillary channel is defined by an upper wall and a lower wall.
39. The vaporizer device of any of claims 35 to 38, wherein the at least one capillary channel fluidly communicates with a wick.
40. The vaporizer device of claim 39, wherein the first location is adjacent an end of the airflow passageway and a mouthpiece.
41. The vaporizer device of any of claims 35 to 40, wherein the at least one capillary channel collects a fluid condensate.
42. A method comprising: collecting a condensate in a first capillary channel of at least one capillary channel of a cartridge of a vaporization device, each of the at least one capillary channel configured to receive a fluid and direct the fluid from a first location toward a second location via capillary action, the cartridge comprising: a reservoir including a reservoir chamber defined by a reservoir barrier, the reservoir being configured to contain a vaporizable material in the reservoir chamber; a vaporization chamber in communication with the reservoir and including a wicking element configured to draw the vaporizable material from the reservoir chamber to the vaporization chamber to be vaporized by a heating element; and an airflow passageway that extends through the vaporization chamber, the at least one capillary channel adjacent the airflow passageway; and directing the collected condensate towards the vaporization chamber and along the first capillary channel.
43. The method of claim 42, further comprising vaporizing, at the vaporization chamber, the collected condensate.
44. The method of any of claims 42 to 43, wherein the first capillary channel tapers in size.
45. The method of any of claims 42 to 44, wherein each capillary channel of the at least one capillary channel is defined by an upper wall and a lower wall..
46. The method of any of claims 42 to 45, wherein the at least one capillary channel fluidly communicates with a wick.
47. The method of any of claims 42 to 46, wherein the first location is adjacent an end of the airflow passageway and a mouthpiece.
48. A vaporizer comprising: a reservoir configured to contain a liquid vaporizable material, the reservoir at least partially defined by at least one wall, the reservoir comprising a storage chamber and an overflow volume; and a collector disposed in the overflow volume, the collector comprising a capillary structure configured to retain a volume of the liquid vaporizable material in fluid contact with the storage chamber, the capillary structure comprising a microfluidic feature configured to prevent air and liquid from bypassing each other during filling and emptying of the collector.
49. The vaporizer of claim 48, further comprising a primary passageway providing a fluid connection between the storage chamber and an atomizer configured to convert the liquid vaporizable material to a gas-phase state.
50. The vaporizer of claim 49, wherein the primary passageway is formed through a structure of the collector.
51. The vaporizer of any of claims 49 or 50, wherein the primary passageway comprises a first channel configured to allow for the liquid vaporizable material to flow from the storage chamber toward a wicking element in the atomizer, the first channel having a cross-sectional shape with at least one irregularity configured to allow liquid in the first channel to bypass an air bubble blocking a remainder of the first channel.
52. The vaporizer of claim 51, wherein the cross-sectional shape resembles a cross.
53. The vaporizer of any of claims 48 to 52, wherein the capillary structure comprises a secondary passageway comprising the microfluidic feature, and wherein the microfluidic feature is configured to allow the liquid vaporizable material to move along a length of the secondary passageway only with a meniscus fully covering a cross-sectional area of the secondary passageway.
54. The vaporizer of claim 53, wherein the cross-sectional area is sufficiently small that, for a material from which walls of the secondary passageway are formed and a composition of the liquid vaporizable material, the liquid vaporizable material preferentially wets the secondary passageway around an entire perimeter of the secondary passageway.
55. The vaporizer of any of claims 48 to 54, wherein the storage chamber and the collector are configured to maintain a continuous column of the liquid vaporizable material in the collector in contact with the liquid vaporizable material in the storage chamber such that a reduction in pressure in the storage chamber relative to ambient pressure causes the continuous column of the liquid vaporizable material in the collector to be at least partially drawn back into the storage chamber.
56. The vaporizer of any of claims 53 to 55, wherein the secondary passageway comprises a plurality of spaced-apart constriction points having a smaller cross-sectional area than parts of the secondary passageway between the constriction points.
57. The vaporizer of claim 56, wherein the constriction points have a flatter surface directed along the secondary passageway toward the storage chamber and a rounder surface directed along the secondary passageway away from the storage chamber.
58. The vaporizer of any of claims 48 to 57, further comprising a microfluidic gate between the collector and the storage chamber, the microfluidic gate comprising a rim of an aperture between the storage chamber and the collector that is flatter on a first side facing the storage chamber than a second, more rounded, side facing the collector.
59. The vaporizer of claim 58, wherein the microfluidic gate comprises a plurality of openings connecting the storage chamber and the collector and a pinch-off point between the plurality of openings, the plurality of openings comprising a first channel and a second channel, wherein the first channel has a higher capillary drive than the second channel.
60. The vaporizer of claim 59, wherein an air-liquid vaporizable material meniscus reaching the pinch-off point is routed to the second channel due to the higher capillary drive in the first channel such that an air bubble is formed to escape into the liquid vaporizable material in the storage chamber.
61. The vaporizer of any of claims 48 to 60, wherein the liquid vaporizable material comprises one or more of propylene glycol and vegetable glycerin.
62. A device for microfluidic pressure equalization comprising: a first capillary channel fluidically coupled to a vent; a second capillary channel fluidically coupled to a storage chamber; and a high-drive channel including an upper wall and a lower wall, the capillary drive channel originating at a third constriction point and diverging outwardly between the upper wall and the lower wall toward the first capillary channel and the second capillary channel.
63. The device of claim 62, wherein the first capillary channel fluidically couples the high-drive channel to an overflow channel.
64. The device of claim 63, wherein the overflow channel fluidically couples the first capillary channel to the vent.
65. The device of any of claims 62 to 64, wherein the third constriction point fluidically couples to the high-drive channel and the storage chamber.
66. The device of any of claims 62 to 65, wherein the high-drive channel has a taper angle defined between the upper wall and the lower wall of between 0 and 21 degrees.
67. The device of claim 66, wherein the taper angle is about 20 degrees.
68. The device of any of claims 62 to 67, wherein a single channel forms the high-drive channel.
69. The device of any of claims 62 to 68, wherein the high-drive channel is free of obstructions therein.
70. The device of any of claims 62 to 69, wherein the upper wall extends from the third constriction point to the second capillary channel.
71. The device of any of claims 62 to 70, wherein the lower wall extends from the third constriction point to the first capillary channel.
72. The device of any of claims 62 to 71, wherein the high-drive channel is configured to seal the first capillary channel and the second capillary channel with a liquid after a pressure equalization event releasing a bubble of gas into the storage chamber.
73. The device of claim 72, wherein the liquid forms a contact angle of less than 90 degrees with a surface of the upper wall or with a surface of the lower wall.
74. The device of claim 73, wherein the contact angle is between 70 degrees and 90 degrees with the surface of the upper wall or with the surface of the lower wall.
75. The device of claim 74, wherein the contact angle is between 75 degrees and 85 degrees with the surface of the upper wall or with the surface of the lower wall.
76. The device of any of claims 22 to 75, wherein the liquid is a vaporizable material and the gas is air.
77. The device of claim 76, wherein the vaporizable material comprises a nicotine formulation.
78. A cartridge for a vaporizer including device for microfluidic pressure equalization, comprising: a cartridge housing including a storage chamber configured to hold a vaporizable liquid; a first capillary channel fluidically coupled to a vent; a second capillary channel fluidically coupled to a storage chamber; a third constriction point fluidically coupled to the storage chamber; and a high-drive channel, the high-drive channel originating at the third constriction point and extending outwardly toward the first capillary channel and the second capillary channel, wherein the high-drive channel is configured to fluidically seal the first capillary channel and the second capillary channel after a pressure equalization event releases a bubble of air into the storage chamber.
79. The cartridge of claim 78, wherein the first capillary channel fluidically couples the high-drive channel to an overflow channel.
80. The cartridge of claim 79, wherein the overflow channel fluidically couples the first capillary channel to the vent.
81. The cartridge of any of claims 78 to 80, wherein the third constriction point fluidically couples to the high-drive channel and the storage chamber.
82. The cartridge of any of claims 78 to 81, wherein the high-drive channel has a taper angle defined between an upper wall and a lower wall of between 0 and 21 degrees.
83. The cartridge of claim 82, wherein the taper angle is about 20 degrees.
84. The cartridge of any of claims 78 to 83, wherein a single channel forms the high-drive channel.
85. The cartridge of any of claims 78 to 84, wherein the high-drive channel is free of obstructions therein.
86. The cartridge of any of claims 78 to 85, wherein the upper wall extends from the third constriction point to the second capillary channel.
87. The cartridge of any of claims 78 to 86, wherein the lower wall extends from the third constriction point to the first capillary channel.
88. The cartridge of any of claims 78 to 87, wherein the high-drive channel is configured to seal the first capillary channel and the second capillary channel with the vaporizable liquid after a pressure equalization event releases the bubble of air into the storage chamber.
89. The cartridge of any of claims 78 to 88, wherein vaporizable material comprises a nicotine formulation.
GB2204567.8A 2019-10-14 2020-10-14 Vaporizer device microfluidic systems and apparatuses Active GB2606847B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2314011.4A GB2620855B (en) 2019-10-14 2020-10-14 Vaporizer device microfluidic systems and apparatuses

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Application Number Priority Date Filing Date Title
US201962915005P 2019-10-14 2019-10-14
US16/656,360 US20200128874A1 (en) 2018-10-17 2019-10-17 Cartridge for a vaporizer device
PCT/US2020/055622 WO2021076657A2 (en) 2019-10-14 2020-10-14 Vaporizer device microfluidic systems and apparatuses

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GB202204567D0 GB202204567D0 (en) 2022-05-11
GB2606847A true GB2606847A (en) 2022-11-23
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GB2403247.6A Active GB2624994B (en) 2019-10-14 2020-10-14 Vaporizer device microfluidic systems and apparatuses
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JP (1) JP2022551961A (en)
KR (1) KR20220079959A (en)
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EP4054360A1 (en) * 2019-11-04 2022-09-14 Juul Labs, Inc. Vaporizer device

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