Multi-frequency Harmonic Acoustography for Novel Applications

Publication ID: 24-11857373_0007_PTD
Published: October 28, 2025
Category:New Applications & Use Cases

Legal Citation

pr1or.art Inc., “Multi-frequency Harmonic Acoustography for Novel Applications,” Published Technical Disclosure No. 24-11857373_0007_PTD, Published October 28, 2025, available at https://archive.pr1or.art/24-11857373_0007_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. 11,857,373.

Summary of the Inventive Concept

This inventive concept expands the core technology of multi-frequency harmonic acoustography to various new industries, including food spoilage detection, infrastructure material evaluation, composite material defect detection, plant health monitoring, and pharmaceutical quality control.

Background and Problem Solved

The original patent focused on target identification and border detection in medical imaging. However, the limitations of the original patent led to the realization that the core technology could be applied to other fields where material properties and defects need to be detected. This inventive concept addresses the need for a non-invasive, non-destructive method to evaluate material properties and detect defects in various industries.

Detailed Description of the Inventive Concept

The new claims leverage the multi-frequency harmonic acoustography technology to detect changes in viscoelastic properties of materials, enabling the detection of defects, spoilage, or quality issues in various industries. For instance, in food spoilage detection, the vibro-acoustography sensor detects changes in viscoelastic properties of food products, and the processing unit analyzes these changes to determine a spoilage level. Similarly, in infrastructure material evaluation, the technology detects changes in mechanical properties to identify potential defects or weaknesses.

Novelty and Inventive Step

The new claims introduce a novel application of the multi-frequency harmonic acoustography technology, expanding its scope beyond medical imaging to various industries. The inventive step lies in recognizing the potential of the core technology to address material property evaluation and defect detection in these new fields.

Alternative Embodiments and Variations

Alternative embodiments of the inventive concept could include the use of different types of sensors, such as optical or electromagnetic sensors, to detect changes in material properties. Additionally, the technology could be adapted for use in other industries, such as aerospace or automotive, where material property evaluation and defect detection are critical.

Potential Commercial Applications and Market

The inventive concept has significant commercial potential in various industries, including food safety, infrastructure maintenance, composite material manufacturing, plant health monitoring, and pharmaceutical quality control. The technology could be licensed to companies operating in these industries, or used to develop new products and services that address specific industry needs.

CPC Classifications

SectionClassGroup
A A61 A61B8/485
A A61 A61B8/085
A A61 A61B8/4494
B B06 B06B1/0622
G G01 G01S7/52038
G G01 G01S15/8913
G G01 G01S15/8922
G G01 G01S15/8952
A A61 A61B8/5207
G G01 G01S7/5203

Field of Art

Acoustic sensing and imaging technologies, spanning medical diagnostics, materials analysis, and non-destructive evaluation, with expertise in ultrasonic transducer design, signal processing, and multi-frequency wave interaction techniques

Person of Ordinary Skill (PHOSITA) Profile

A technical professional with advanced degree in engineering (electrical, mechanical, or biomedical), specialized knowledge of wave propagation, signal processing algorithms, and sensor design, capable of translating core sensing principles across different application domains

Obviousness Rationale

A PHOSITA would recognize that the fundamental multi-frequency harmonic acoustography technique disclosed in US 11857373 represents a generalizable sensing approach applicable beyond medical imaging. The core principles of detecting material property changes through wave interaction are directly transferable to other domains like food science, materials engineering, and plant biology, representing a predictable extension of the original technological concept.

Obvious Combinations & Variations

Source Patent Element
Confocal transducer with multiple frequency ultrasonic waves for detecting tissue boundary properties
PTD Variation
Applying identical wave interaction principles to detect material property changes in food products, composite materials, and infrastructure
Obviousness Reasoning
Known technique of adapting sensing principles across domains, with predictable results of detecting structural or compositional variations through wave interaction
Source Patent Element
Hydrophone positioned centrally within piezoelectric element for precise signal detection
PTD Variation
Utilizing similar sensor configuration for detecting mechanical property changes in non-biological materials
Obviousness Reasoning
Straightforward sensor design adaptation, representing a standard engineering approach to technology transfer between related technical domains
Source Patent Element
Electronic scanning of target tissue using curved transducer array
PTD Variation
Implementing similar scanning techniques for evaluating material defects or plant tissue health
Obviousness Reasoning
Predictable application of established wave scanning methodology to alternative inspection scenarios, representing an obvious design choice for a skilled practitioner
Source Patent Element
Detection of mechanical property boundaries between different tissue states
PTD Variation
Extending boundary detection concept to identify transitions between material conditions in food, pharmaceuticals, and infrastructure
Obviousness Reasoning
Logical extension of core sensing principle, demonstrating how a PHOSITA would recognize broad applicability of the original technological concept
35 U.S.C. § 103 Summary: Based on the teachings of US 11857373 and the present publication, a person having ordinary skill in the art would find obvious the application of multi-frequency harmonic acoustography principles to non-medical sensing domains. The disclosed variations represent predictable technological extensions utilizing known wave interaction techniques, thereby rendering potential claims to such applications unpatentable under standard obviousness analysis.

Original Patent Information

Patent NumberUS 11,857,373
TitleMulti-frequency harmonic acoustography for target identification and border detection
Assignee(s)The Regents of the University of California