Advanced Aerosol Cartridge Design for E-Vapor Systems

Publication ID: 24-11856992_0006_PTD

Published: October 27, 2025

Category:Direct Improvements & Enhancements

Legal Citation

pr1or.art Inc., “Advanced Aerosol Cartridge Design for E-Vapor Systems,” Published Technical Disclosure No. 24-11856992_0006_PTD, Published October 27, 2025, available at https://archive.pr1or.art/24-11856992_0006_PTD

This technical disclosure describes improvements that would be readily apparent to a Person Having Ordinary Skill In The Art (PHOSITA) when considered in combination with the foundational architecture disclosed in U.S. Patent No. 11,856,992.

Background and Problem Solved

The original aerosol-generating system patent (WO 2019/234245 A1) has limitations in cartridge design, which can lead to inefficient heat transfer, leakage, and inconsistent aerosol generation. The present invention addresses these issues by introducing a new cartridge design with a non-circular cross-section body, sealing protrusions, and optimized susceptor elements.

Novelty and Inventive Step

The new claims introduce a novel cartridge design with a non-circular cross-section body, sealing protrusions, and optimized susceptor elements, which provide improved efficiency, safety, and user experience. The inventive step lies in the combination of these features, which address the limitations of the original patent and provide a significant improvement in aerosol generation.

Alternative Embodiments and Variations

Alternative embodiments of the invention may include cartridges with different cross-sectional shapes, such as triangular or hexagonal, and varying susceptor element configurations. Additionally, the aerosol generating device could be modified to accommodate different heater element designs or materials.

Potential Commercial Applications and Market

The enhanced aerosol-generating system has significant commercial potential in the e-vapor and heat-not-burn industries, offering improved products with enhanced user experience, safety, and efficiency. The target market includes manufacturers of e-vapor and heat-not-burn products, as well as consumers seeking advanced alternatives to traditional tobacco products.

CPC Classifications

Section	Class	Group
A	A24	A24F40/465
A	A24	A24F40/30
A	A24	A24F40/42
A	A61	A61M11/042
A	A24	A24F40/10

Section 103 Obviousness Analysis (PHOSITA)

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Field of Art

Electronic aerosol generation systems, specifically nicotine delivery devices and cartridge design for heated tobacco or e-cigarette technologies, requiring expertise in thermal engineering, materials science, and electronic device design

Person of Ordinary Skill (PHOSITA) Profile

A skilled practitioner with a bachelor's or master's degree in mechanical engineering, materials science, or chemical engineering, with 3-5 years experience in electronic nicotine delivery system (ENDS) design, familiar with thermal transfer principles and component miniaturization

Obviousness Rationale

A person of ordinary skill would recognize that the PTD's variations represent predictable design modifications to the source patent's aerosol generation system, utilizing known techniques in cartridge configuration, susceptor placement, and thermal management to incrementally improve device performance and manufacturability.

Obvious Combinations & Variations

Source Patent Element

Cartridge with first and second cavities containing nicotine and lactic acid sources

PTD Variation

Non-circular cross-section body with modified cavity positioning and sealing protrusions

Obviousness Reasoning

A PHOSITA would find it obvious to modify cross-sectional geometry as a standard design optimization technique to improve packaging efficiency and thermal characteristics, using well-known geometric design principles

Source Patent Element

Susceptor elements positioned in inner space and outer periphery of cavities

PTD Variation

Adding a third susceptor element adjacent to the heater element to enhance heat transfer

Obviousness Reasoning

Optimizing heat transfer through additional susceptor elements represents a predictable solution using known thermal engineering techniques, with a finite number of identifiable configurations

Source Patent Element

Aerosol generating device with heater element

PTD Variation

Heater element with non-uniform heat distribution pattern to control flavor and aroma profile

Obviousness Reasoning

Modulating heat distribution to control flavor is a standard design approach in aerosol generation, representing an obvious variation using known thermal control techniques

Source Patent Element

Cartridge with cavities containing nicotine and lactic acid sources

PTD Variation

Method of assembling cartridge using protrusions to seal cavity openings

Obviousness Reasoning

Implementing mechanical sealing techniques is a routine design choice for preventing leakage, using standard manufacturing and assembly methods known in the art

Source Patent Element

Basic aerosol generating system configuration

PTD Variation

Alternative embodiments with different cross-sectional shapes and susceptor configurations

Obviousness Reasoning

Exploring geometric variations and component arrangements represents standard design iteration, with a predictable range of potential modifications apparent to a skilled practitioner

35 U.S.C. § 103 Summary: Based on the teachings of US Patent 11856992 and the disclosed variations, a person of ordinary skill in the art would find the claimed cartridge design and aerosol generation method obvious, as the PTD demonstrates that the technical modifications represent predictable design choices utilizing known techniques in thermal management, geometric optimization, and device configuration, thereby rendering subsequent claims involving similar technical approaches anticipated and non-patentable.

Original Patent Information

Patent Number	US 11,856,992
Title	Aerosol-generating system, aerosol forming device and a cartridge therefor
Assignee(s)	Philip Morris Products S.A.