Lung-like Epithelium-based Air Purification and Sensing Systems

Publication ID: 24-11857697_0002_PTD
Published: October 28, 2025
Category:New Applications & Use Cases

Legal Citation

pr1or.art Inc., “Lung-like Epithelium-based Air Purification and Sensing Systems,” Published Technical Disclosure No. 24-11857697_0002_PTD, Published October 28, 2025, available at https://archive.pr1or.art/24-11857697_0002_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. 11,857,697.

Summary of the Inventive Concept

The inventive concept leverages the core technology of growing 3-dimensional lung-like epithelium to develop novel applications in air purification, sensing, and fragrance generation, addressing critical needs in indoor air quality, pollution detection, and personalized scents.

Background and Problem Solved

The original patent disclosed methods for growing 3-dimensional lung-like epithelium for therapeutic purposes. However, the limitations of the original patent lie in its focus on medical applications, neglecting the potential of this technology in other fields. The new inventive concept addresses this limitation by exploring the application of lung-like epithelium in air purification, sensing, and fragrance generation, providing a novel solution to pressing environmental and commercial challenges.

Detailed Description of the Inventive Concept

The inventive concept encompasses systems and methods for utilizing 3-dimensional lung-like epithelium in air purification, sensing, and fragrance generation. The epithelium is cultured in a chamber, where it can interact with air, pollutants, or odor molecules. In air purification systems, the epithelium facilitates the removal of pollutants, improving indoor air quality. In sensing applications, the epithelium is coupled to sensors, enabling the detection of airborne pollutants. For fragrance generation, the epithelium responds to different odor molecules, allowing for the creation of personalized scents.

Novelty and Inventive Step

The new claims introduce a paradigm shift in the application of lung-like epithelium, transitioning from therapeutic uses to environmental and commercial applications. The inventive step lies in the recognition of the epithelium's potential in air purification, sensing, and fragrance generation, and the development of novel systems and methods to harness this potential.

Alternative Embodiments and Variations

Alternative embodiments may include the use of different types of cells or signaling pathways to generate the lung-like epithelium, or the integration of the epithelium with other technologies, such as robotics or artificial intelligence, to enhance its functionality. Variations of the inventive concept may also involve the application of lung-like epithelium in other fields, such as cosmetics or food technology.

Potential Commercial Applications and Market

The inventive concept has significant commercial potential in the air purification, sensing, and fragrance industries. The market for air purification systems is growing rapidly, driven by increasing concerns about indoor air quality. The sensing and fragrance applications also offer opportunities for growth, particularly in the fields of robotics and personalized consumer products.

CPC Classifications

SectionClassGroup
A A61 A61L27/3895
A A61 A61K35/42
A A61 A61L27/3804
A A61 A61L27/3813
A A61 A61L27/3834
A A61 A61L27/3839
A A61 A61L27/3869
C C12 C12N5/0018
C C12 C12N5/0062
C C12 C12N5/0606
C C12 C12N5/0607
C C12 C12N5/0688
C C12 C12N5/0689
A A61 A61L2430/22
C C12 C12N2501/113
C C12 C12N2501/115
C C12 C12N2501/117
C C12 C12N2501/119
C C12 C12N2501/155
C C12 C12N2501/385
C C12 C12N2501/415
C C12 C12N2501/999
C C12 C12N2506/02
C C12 C12N2506/03
C C12 C12N2506/27
C C12 C12N2506/45
C C12 C12N2513/00

Field of Art

Regenerative medicine, stem cell biology, tissue engineering, with a focus on lung epithelial cell culture and differentiation techniques

Person of Ordinary Skill (PHOSITA) Profile

A biomedical researcher with advanced training in stem cell biology, cell differentiation protocols, tissue engineering, and biotechnology, possessing expertise in cell culture techniques, signaling pathway manipulation, and interdisciplinary application of cellular technologies

Obviousness Rationale

A person having ordinary skill in the art would recognize the natural extension of the source patent's lung-like epithelium cultivation techniques to novel application domains such as air purification, sensing, and fragrance generation. The fundamental cellular cultivation methodology remains consistent, with the primary innovation being the identification of alternative functional contexts for the 3-dimensional lung-like epithelium. These variations represent predictable applications of a well-characterized biological system, leveraging the inherent sensing and interactive capabilities of lung-like tissue.

Obvious Combinations & Variations

Source Patent Element
NKX2.1+ ventral-anterior foregut spheroid tissue derived from pluripotent stem cells
PTD Variation
Using lung-like epithelium in air purification and sensing systems
Obviousness Reasoning
A PHOSITA would recognize that lung epithelial cells naturally interact with air molecules, making their use in air quality detection a predictable design choice based on the cells' inherent physiological characteristics
Source Patent Element
Culturing cells with SOX9 and SOX2+ protein activity for approximately forty days
PTD Variation
Integrating lung-like epithelium with sensor components for pollutant detection
Obviousness Reasoning
The established cell culture protocol provides a stable biological substrate that can be readily adapted for sensing applications through standard bioengineering techniques
Source Patent Element
Methods of activating Wnt and FGF signaling pathways during cell differentiation
PTD Variation
Developing fragrance generation systems using lung-like epithelium's molecular response mechanisms
Obviousness Reasoning
A skilled artisan would understand that cellular signaling pathways can be manipulated to create responsive systems for detecting and generating molecular interactions
Source Patent Element
Therapeutic applications for damaged lung tissue
PTD Variation
Expanding lung-like epithelium applications to environmental and commercial technologies
Obviousness Reasoning
Translating cellular technologies across different domains is a standard practice in biotechnology, representing an obvious extension of the original research
Source Patent Element
In vitro cultivation of pluripotent stem cell-derived tissue
PTD Variation
Creating artificial olfactory systems for robotics and advanced sensing
Obviousness Reasoning
Interdisciplinary application of biological systems to technological domains is a predictable innovation for a skilled researcher familiar with emerging biotechnology trends
35 U.S.C. § 103 Summary: Based on the teachings of US Patent 11857697 and the disclosed variations, a person having ordinary skill in the art would find the claimed innovations in air purification, sensing, and fragrance generation using lung-like epithelium to be obvious extensions of known cellular cultivation and differentiation techniques. The published technical disclosure demonstrates that the claimed variations represent predictable applications of established biological methodologies, thereby rendering subsequent claims obvious under 35 U.S.C. ยง 103.

Original Patent Information

Patent NumberUS 11,857,697
TitleCompositions and methods for obtaining 3-dimensional lung-like epithelium and related uses thereof
Assignee(s)THE REGENTS OF THE UNIVERSITY OF MICHIGAN