Published Technical Disclosure Archive

Advanced Thermal Management for Aerosol Generation

Publication ID: 24-11856993_0001_PTD
Published: October 27, 2025
Category:Direct Improvements & Enhancements

Legal Citation

pr1or.art Inc., “Advanced Thermal Management for Aerosol Generation,” Published Technical Disclosure No. 24-11856993_0001_PTD, Published October 27, 2025, available at https://archive.pr1or.art/24-11856993_0001_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. 11,856,993.

Background and Problem Solved

The original patent disclosed an aerosol-generating system with a fluid permeable susceptor element. However, the system suffered from thermal losses and inefficient heating, leading to reduced aerosol production and potential safety risks. The new invention addresses these limitations by introducing improved thermal management features, enhancing the overall performance and safety of the system.

Novelty and Inventive Step

The new claims introduce novel features that improve the thermal management of the aerosol-generating system, resulting in increased heating efficiency and improved safety. The combination of a spiral geometry susceptor element, thermal insulation layers, and high-frequency oscillating currents provides a non-obvious solution to the limitations of the original patent.

Alternative Embodiments and Variations

Alternative embodiments of the invention could include varying the spiral geometry of the susceptor element, using different thermal insulation materials, or implementing additional safety features, such as automatic shut-off in case of overheating. Variations could also include integrating the temperature monitoring mechanism into the cartridge or using alternative heating sources.

Potential Commercial Applications and Market

The enhanced aerosol-generating system has significant commercial potential in the e-cigarette and vaping industries, where improved performance and safety are highly valued. The invention could also be applied in other industries, such as pharmaceuticals or cosmetics, where aerosol generation is a critical process.

CPC Classifications

SectionClassGroup
A A24 A24F40/465
A A24 A24F40/42
A A24 A24F40/90
H H05 H05B6/108
H H05 H05B6/362
H H05 H05B6/38
A A24 A24F40/10

Field of Art

Aerosol-generating systems and electronic cigarette technology, with expertise in thermal management, heating elements, and fluid delivery systems for vaporization devices

Person of Ordinary Skill (PHOSITA) Profile

A professional with advanced engineering or materials science background, familiar with electronic heating systems, thermal transfer principles, and design optimization for vaporization technologies

Obviousness Rationale

A PHOSITA would recognize that the PTD's variations represent predictable engineering improvements to the source patent's aerosol-generating system. The disclosed modifications of susceptor element geometry, thermal insulation, and high-frequency heating represent standard design optimization techniques within the known technological solution space for electronic vaporization devices.

Obvious Combinations & Variations

Source Patent Element
Fluid permeable susceptor element for heating aerosol-forming substrate
PTD Variation
Spiral geometry susceptor element to increase surface area and heat transfer efficiency
Obviousness Reasoning
Modifying geometric configurations to optimize heat transfer is a routine design choice for thermal management, representing a predictable variation within standard engineering problem-solving approaches
Source Patent Element
Cartridge with capillary materials for liquid retention
PTD Variation
Adding thermal insulation layer surrounding susceptor element
Obviousness Reasoning
Implementing thermal barriers to improve energy efficiency is a known technique in thermal system design, representing an obvious solution to reducing heat loss
Source Patent Element
Electrically heatable aerosol-generating system
PTD Variation
High-frequency oscillating current for precise temperature control
Obviousness Reasoning
Utilizing alternative current modulation techniques for improved thermal management is a standard engineering approach with predictable results in heating systems
Source Patent Element
Cartridge configured for use with aerosol-generating device
PTD Variation
Temperature monitoring mechanism with automatic safety shut-off
Obviousness Reasoning
Implementing safety features through temperature monitoring represents a standard design improvement within the predictable solution space for electronic heating devices
Source Patent Element
Heating system with replaceable cartridge portion
PTD Variation
Integrated temperature control mechanisms within cartridge design
Obviousness Reasoning
Relocating control systems between device components is a routine design optimization with predictable functional outcomes
35 U.S.C. § 103 Summary: Based on the teachings of US Patent 11856993, a person having ordinary skill in the art would find the technical variations disclosed herein to be obvious extensions of the prior art, representing standard engineering design choices that would be apparent to a skilled practitioner without requiring inventive insight. The disclosed modifications represent predictable improvements to known aerosol-generating system technologies, rendering subsequent claims covering similar technical approaches unpatentable under 35 U.S.C. Section 103.

Original Patent Information

Patent NumberUS 11,856,993
TitleAerosol-generating system comprising a fluid permeable susceptor element
Assignee(s)Philip Morris Products S.A.