Electronic smoking article comprising one or more microheaters

Patent metadata

Field	Value
Publication number	US-2025151175-A1
Application number	US-202519019082-A
Country	US
Kind code	A1
Filing date	Jan 13, 2025
Priority date	Sep 4, 2012
Publication date	May 8, 2025
Grant date	—

Abstract

The present disclosure relates to an electronic smoking article that provides for improved aerosol delivery. Particularly, the article comprises one or more microheaters. In various embodiments, the microheaters provide for improved control of vaporization of an aerosol precursor composition and provide for reduced power requirements to achieve consistent aerosolization. The present disclosure further relates to methods of forming an aerosol in a smoking article.

First claim

1 - 61 . (canceled)

62 . An electronic smoking article comprising:
a shell; a heating member positioned within the shell, the heating member comprising: a support formed of a ceramic material; an electrically conductive material patterned on a surface of the support; and electrical connection terminals extending from the electrically conductive material; and a reservoir positioned within the shell and configured for storage of an aerosol precursor composition in proximity to the heating member so that the aerosol precursor composition is deliverable to the electrically conductive material for aerosolization.

63 . The electronic smoking article of claim 62 , wherein the electrically conductive material is configured as a thin film.

64 . The electronic smoking article of claim 62 , wherein the electrically conductive material is present at a thickness of about 0.01 μm to about 5 μm.

65 . The electronic smoking article of claim 62 , wherein the electrically conductive material is a chemical vapor deposition layer.

66 . The electronic smoking article of claim 62 , where in the electrically conductive material is a metal evaporation layer.

67 . The electronic smoking article of claim 62 , wherein the electrically conductive material is a printed layer.

68 . An electronic smoking article comprising:
a shell; and an atomizer positioned within the shell, the atomizer comprising a microheater attached to a ceramic substrate; wherein the atomizer is arranged for passage of an aerosol precursor composition from a reservoir to the microheater.

69 . The electronic smoking article of claim 68 , wherein the microheater comprises a patterned, electrically conductive material.

70 . The electronic smoking article of claim 69 , wherein the microheater comprises electrical connection terminals extending from the electrically conductive material.

71 . The electronic smoking article of claim 68 , wherein the ceramic substrate includes a portion configured for storing at least a portion of the aerosol precursor composition.

72 . The electronic smoking article of claim 68 , wherein the ceramic substrate includes a portion configured for transport of the aerosol precursor composition to the microheater.

73 . The electronic smoking article of claim 68 , wherein the atomizer is configured so that a single ceramic substrate defines a reservoir, a liquid transport element, and a microheater support.

74 . The electronic smoking article of claim 68 , wherein the ceramic substrate comprises one or more wells.

75 . The electronic smoking article of claim 74 , wherein the one or more wells is arranged to be at least partially filed with the aerosol precursor composition or wherein the one or more wells is present on only one side of the substrate.

76 . The electronic smoking article of claim 68 , wherein the ceramic substrate has a four-sided cross-section.

Assignees

• Rai Strategic Holdings Inc

Inventors

• Collett William Robert
• Sears Stephen Benson
• Potter Dennis Lee
• Alderman Steven Lee
• Kebaili Mo

Classifications

• A24F40/42

  Cartridges or containers for inhalable precursors · CPC title

• A24F40/46 Primary

  Shape or structure of electric heating means · CPC title

• A24F40/30

  Devices using two or more structurally separated inhalable precursors, e.g. using two liquid precursors in two cartridges · CPC title

• A24F40/20

  Devices using solid inhalable precursors · CPC title

• A24F40/10

  Devices using liquid inhalable precursors · CPC title