IP Library › Granted Patent US 12,484,116
Granted Patent B2
US 12,484,116 · App. 17/843,563 · Granted Nov 25, 2025

Electronic smoking article comprising one or more microheaters

Inventors: William Robert Collett (Lexington, NC); Stephen Benson Sears (Siler City, NC); Dennis Lee Potter (Kernersville, NC); Steven Lee Alderman (Lewisville, NC); Mo Kebaili (Irvine, CA)
Assignee: RAI STRATEGIC HOLDINGS, INC.
H05B3/265A24F40/30A24F40/42A24F40/46A24F40/51A24F40/10A24F40/20H05B2203/003
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Quick Facts
Patent No.
US 12,484,116
App. No.
17/843,563
Granted
Nov 25, 2025
Kind
B2
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.

Claims (19)

1 . An aerosol forming article comprising:

a housing;

a reservoir within the housing configured to store a liquid aerosol precursor composition; and

an atomizer unit that is receivable in the housing, the atomizer unit comprising:

an atomizing chamber defined by at least one atomizing chamber wall;

a heater positioned in the atomizing chamber;

a silicon-based component arranged to overlie the heater and be in direct contact therewith;

at least one opening formed in a component of the atomizer unit and configured for passage therethrough of vapor formed by vaporization of the liquid aerosol precursor composition, wherein the component in which the at least one opening is formed is an atomizing chamber cover; and

a plurality of electrical terminals extending through the at least one atomizing chamber wall from within the atomizing chamber.

2 . The aerosol forming article of claim 1 , further comprising a mouthend defined at an end of the housing and including an opening for passage therethrough of the vapor.

3 . The aerosol forming article of claim 1 , wherein a portion of the atomizing chamber wall at least partially defines a liquid passage for passage of the liquid aerosol precursor composition from the reservoir to the heater positioned in the atomizing chamber.

4 . The aerosol forming article of claim 1 , wherein the heater positioned in the atomizing chamber is present on a supporting component.

5 . The aerosol forming article of claim 4 , wherein the supporting component is formed of a porous material.

6 . The aerosol forming article of claim 1 , wherein the atomizing chamber cover is arranged with the at least one atomizing chamber wall so that the liquid aerosol precursor composition will not pass through the at least one opening formed in the atomizing chamber cover.

7 . The aerosol forming article of claim 1 , wherein the plurality of electrical terminals are arranged for forming an electrical connection between the heater and further electrical components of the aerosol forming article.

8 . The aerosol forming article of claim 1 , wherein the housing defines a substantially open cavity in which the atomizer unit is receivable.

9 . The aerosol forming article of claim 1 , wherein the housing defines a cartridge that is configured for engagement with a control body.

10 . The aerosol forming article of claim 9 , wherein the cartridge is configured for a press-fit engagement with the control body.

11 . The aerosol forming article of claim 1 , wherein the silicon-based component comprises at least silicon and carbon.

Continuity (6)
Continuation 17327388 · May 21, 2021
Continuation 16722794 · Dec 20, 2019
Continuation 15982411 · May 17, 2018
Continuation 14512561 · Oct 13, 2014
Continuation 13602871 · Sep 4, 2012
Related Publication 20220322495A1 · Oct 6, 2022
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