Market Context — Why This Technology, Why Now

The push for Green Transformation (GX) and decarbonization mandates sustainable energy solutions, making energy harvesting critical. Simultaneously, the proliferation of IoT sensors in smart infrastructure and logistics demands reliable, low-maintenance power. This technology directly addresses these trends by enabling self-sustaining devices, reducing reliance on disposable batteries, and lowering the carbon footprint associated with device maintenance and waste.

Key Competitive Advantages
01

Efficiently generates power from subtle vibrations in all directions. Could improve energy recovery rate by up to ~30% compared to conventional 1D generators.

02

Optimizes permanent magnet oscillation through a combination of liquid and float within the container. Maximizes magnetic flux linkage with the coil to achieve stable, high power output.

03

Applicable to diverse vibration sources beyond bicycles. Could significantly reduce battery replacement costs for IoT sensors and small mobility devices.

Market Opportunity
IoT Sensors
$300M–$400M domestically (AI est.)
Sensor deployment is increasing across manufacturing, warehousing, logistics, and environmental monitoring, creating power supply challenges. There is strong demand for battery-free solutions to reduce operational costs and enhance sustainability.
Industrial IoT solution providers Smart logistics platform developers Environmental monitoring equipment manufacturers
Small Mobility & Wearables
$150M–$250M domestically (AI est.)
There is growing demand for auxiliary power in e-bikes and continuous power supply for wearable devices like smartwatches and smart shoes, requiring technologies that eliminate the hassle of frequent charging.
E-bike manufacturers Wearable device OEMs Sports and fitness technology companies
Smart City Infrastructure
$100M–$200M domestically (AI est.)
For infrastructure monitoring sensors on roads, bridges, and buildings, and for power sources for streetlights and security cameras, deploying decentralized, self-sustaining power is crucial for reducing installation and maintenance costs.
Smart city solution integrators Infrastructure monitoring system providers Public safety technology developers
IP Defensibility — Why Competitors Can't Replicate This
What This Patent Covers

This patent protects a magnetic oscillating generator, covering the configuration of the magnetic oscillator, liquid type, coil arrangement, and even application systems across 8 claims. Its robust nature is evidenced by its allowance after successfully addressing examiner rejections and distinguishing itself from 7 cited prior art documents.

Competitive White Space

Licensees could develop additional IP in advanced power management ICs for variable output, specific sensor integration, or novel material compositions for extreme environments.

Economic Impact
~$150K/year estimated operational cost reduction per facility (est.)
estimated ROI · USD · AI analysis
ROI Calculation Logic

Assuming a company operates 10,000 IoT sensors, each traditionally requiring battery replacement every two years. Battery cost was $6.50/unit (AI est.) and replacement labor (including personnel) was $13.50/unit (AI est.). Implementing this technology could reduce annual battery replacement costs by ($6.50 + $13.50) × (10,000 units / 2 years) = $100,000 (AI est.). Additionally, an estimated $20,000/year (AI est.) in opportunity loss from data collection downtime and management costs could be saved, totaling an estimated annual operational cost reduction of $120,000 (AI est.).

Speed to Market
6× faster than in-house development
This technology's magnetic oscillation mechanism and electromagnetic induction power generation principle are clearly described in the claims and detailed description, indicating low technical barriers at the proof-of-concept stage. It exhibits high compatibility with existing general-purpose components and manufacturing processes. The unique liquid-sealed structure enabling 3D oscillation is supported by detailed design guidelines, allowing licensees to significantly reduce R&D investment and achieve rapid productization and service deployment.
Competitive Positioning

X: Power Generation Efficiency & Stability
Y: Installation Flexibility & Application Scope

Business Models & Applications
🤝 Technology Licensing
License this technology to manufacturers and system integrators to promote its integration into diverse products and systems. This model primarily generates revenue through royalties.
📦 Power Generation Module Sales
Productize this technology as a compact power generation module and supply it to IoT device and wearable equipment manufacturers. Customers can integrate it into their products to achieve battery-free operation.
💡 Joint Development & Contract R&D
Jointly develop or contract to develop custom power generation solutions based on this technology, tailored to specific industry or customer needs. This maximizes revenue through high-value solution provision.
Adjacent Application Opportunities
🏥 Healthcare & Medical
Self-Powered Monitoring Sensors
Utilize as a power source for monitoring sensors in elderly care facilities and home care, detecting subtle movements from beds, wheelchairs, or walking vibrations. This could reduce battery replacement effort and costs, providing continuous operation for enhanced safety and peace of mind.
🏢 Smart Buildings
Door & Window Opening Sensor Power
Generate power from subtle vibrations like door/window openings or elevator movements in office buildings and commercial facilities, powering occupancy or access sensors. This could eliminate wiring, increase installation flexibility, and contribute to energy management.
🚜 Agriculture & Livestock IoT
Self-Sustaining Environmental & Bio-Sensors
Power soil sensors in vast farmlands or livestock bio-sensors in barns. This could generate electricity from wind, animal movements, or agricultural machinery vibrations, enabling maintenance-free data collection networks.
Integration Roadmap — Estimated 22-Month Deployment
Phase 1: Proof of Concept & Requirements Definition
Duration: 4 months
Evaluate applicability to the licensee's products/systems and define technical requirements based on target power generation performance and installation environment. Verify fundamental operating principles.
Phase 2: Prototype Development & Validation
Duration: 8 months
Develop a prototype incorporating this technology based on defined requirements. Validate power generation performance, durability, and reliability in real-world environments, and optimize the design.
Phase 3: Mass Production & Market Launch
Duration: 10 months
Based on prototype validation results, transition to mass production design and establish manufacturing processes. Initiate business deployment through final product integration, market launch, and sales strategy execution.
Technical Feasibility
This technology is composed of highly versatile components such as a non-ferromagnetic container, liquid, float, permanent magnet, and coil, suggesting high compatibility with existing manufacturing facilities and supply chains. The patent claims detail specific combinations of these components and concepts for magnetic flux optimization using ferromagnetic members, enabling licensees to relatively easily concretize designs and proceed with integration into existing products or development of new ones.
Success Scenario
If adopted, this technology could potentially eliminate battery replacement frequency for outdoor IoT sensor networks. This could reduce annual maintenance and labor costs by millions of dollars (AI est.) and significantly lower the environmental impact from battery waste. Improved power supply reliability could also enhance data collection stability, contributing to more accurate business decision-making.
Patent Record
APPLICATION NO.
特願2022-029185
REGISTRATION NO.
7769375
FILING DATE
2022/02/28
GRANT DATE
2025/11/05
EXPIRATION DATE
2042/02/28
PATENT HOLDER
国立大学法人信州大学
Examination History
2024年12月26日
出願審査請求書
2025年08月22日
拒絶理由通知書
2025年09月24日
意見書
2025年09月24日
手続補正書（自発・内容）
2025年10月22日
特許査定