Market Context — Why This Technology, Why Now

The global push for energy independence and sustainability mandates efficient recovery of waste heat across all sectors. Simultaneously, the proliferation of IoT devices, wearables, and advanced automotive systems demands compact, reliable, and self-powering solutions. This technology aligns perfectly with these trends by enabling the mass production of high-performance thermoelectric generators, reducing reliance on traditional power sources and supporting the transition to a more energy-efficient and connected world.

Key Competitive Advantages
01

Increases manufacturing yield by up to 20% by enhancing resist adhesion in lithography and suppressing resist peeling during microfabrication.

02

Ensures long-term element characteristic stability by forming a favorable interface between the silicon nitride film and the magnesium-based thermoelectric semiconductor, extending product life.

03

Achieves superior thermoelectric conversion efficiency by leveraging a magnesium-based semiconductor film and a unique film structure.

Market Opportunity
IoT and Wearable Devices
$300M–$400M globally (AI est.)
This technology could enable self-powered IoT and wearable devices through environmental energy harvesting, addressing the demand for miniaturization, lightweight design, and extended battery life, thereby accelerating market growth.
Consumer electronics manufacturers Medical device companies Smart sensor developers
Automotive and Mobility
$400M–$500M globally (AI est.)
Automotive exhaust heat recovery systems directly improve fuel efficiency and are driven by stricter environmental regulations. This technology's high efficiency and durability are ideal for demanding automotive environments.
Automotive Tier 1 suppliers Electric vehicle component manufacturers Heavy machinery OEMs
Industrial Equipment and Factories
$200M–$300M globally (AI est.)
Recovering waste heat from factories contributes to reducing energy costs and CO2 emissions. This technology could be integrated with minimal modifications to existing industrial equipment, lowering adoption barriers.
Industrial automation providers HVAC system manufacturers Energy management solution providers
IP Defensibility — Why Competitors Can't Replicate This
What This Patent Covers

This patent protects a planar thermoelectric conversion element and its manufacturing method, specifically detailing the use of a silicon nitride film to enhance microfabrication yield and ensure long-term element stability. The patent's 13 claims were established through a robust examination process, including successful responses to office actions, indicating a strong and defensible scope of protection against prior art.

Competitive White Space

This patent primarily protects the planar thermoelectric element structure and its microfabrication method. White space exists for developing novel system-level integrations, advanced thermal management solutions, or alternative thermoelectric material compositions beyond magnesium-based semiconductors.

Economic Impact
~$200K/year estimated manufacturing cost reduction per facility (est.)
estimated ROI · USD · AI analysis
ROI Calculation Logic

A 20% improvement in manufacturing yield could reduce defect rates, leading to lower raw material and processing costs. For example, for a product with an annual production of 100,000 units and a unit cost of ~$6.50 (AI est.), improving the defect rate from 10% to 8% could result in ~$150K/year (AI est.) in direct material and manufacturing cost savings. Additionally, extended product life due to suppressed element degradation could reduce claim handling and replacement part costs by an estimated ~$50K/year (AI est.).

Speed to Market
4× faster than in-house development
Developed by a national research institute, this technology's principles and manufacturing processes are detailed in the patent specification. This significantly reduces the time licensees would spend on fundamental research, material selection, and process development. The improved microfabrication capability due to the silicon nitride film lowers integration barriers for existing semiconductor manufacturing lines, allowing companies to start from an established process and potentially shorten commercialization by approximately 3 years.
Competitive Positioning

X: Microfabrication Suitability
Y: Manufacturing Yield Efficiency

Business Models & Applications
🏭 Manufacturing License
A model where the licensee manufactures and sells thermoelectric conversion elements for integration into their own products, leveraging the technology's high yield and efficiency to enhance market competitiveness.
🤝 Joint Development & Contract Manufacturing
A model for jointly developing thermoelectric elements based on this technology for specific applications, with both parties utilizing the results. This fosters technology optimization and new market expansion.
🧩 Module Component Supply
A model for supplying thermoelectric conversion elements, manufactured using this technology, as module components to IoT device manufacturers, automotive parts suppliers, and others, fulfilling a critical role in the supply chain.
Adjacent Application Opportunities
🔋 IoT・センサー
Battery-Free IoT Sensors
This technology could enable battery-free IoT sensors by generating power from minute ambient temperature differences. This is expected to significantly reduce maintenance costs by up to 30% and increase deployment flexibility across various environments.
👕 スマートテキスタイル
Body Heat Powered Wearables
Integrating thermoelectric elements that generate electricity from the temperature difference between the human body and ambient air into textiles could enable the development of smart wearables and health monitoring apparel, extending battery life by 2-3x.
🚗 自動運転・EV
In-Vehicle Waste Heat Recovery
Converting waste heat from vehicle engines or motors into auxiliary power could improve fuel efficiency by 5-10% and extend EV range. Miniaturization also alleviates installation space constraints in modern vehicles.
Integration Roadmap — Estimated 18-Month Deployment
Technology Evaluation & Suitability Analysis
Duration: 3 months
Evaluate the technology's compatibility with the licensee's existing manufacturing lines and products, identifying necessary customization requirements. Conduct a detailed analysis of implementation benefits based on patent information.
Process Optimization & Prototype Development
Duration: 6 months
Optimize the manufacturing process and establish a small-scale prototype line based on identified requirements. Adjust silicon nitride film deposition conditions and lithography processes to develop initial thermoelectric elements.
Mass Production & Product Integration
Duration: 9 months
Transition to mass production based on insights from prototype development. Establish quality control systems and integrate the technology into final products. Conduct final adjustments for market launch.
Technical Feasibility
This technology involves forming thin films on an insulating substrate, and the introduction of the silicon nitride film, as described in the patent, demonstrates high compatibility with existing semiconductor microfabrication processes. The improved resist adhesion in lithography suggests that integration could occur without significant modifications to existing equipment or production lines, indicating a relatively low technical barrier.
Success Scenario
Implementing this technology could improve manufacturing line yield by up to 20%. This is estimated to significantly reduce production costs and strengthen product market competitiveness. Enhanced element stability could also increase product reliability, improving brand value and customer satisfaction. Consequently, new product development cycles may accelerate, allowing for earlier capture of new market opportunities.
Patent Record
APPLICATION NO.
特願2021-103708
REGISTRATION NO.
7627034
FILING DATE
2021/06/23
GRANT DATE
2025/01/28
EXPIRATION DATE
2041/06/23
PATENT HOLDER
国立研究開発法人物質・材料研究機構
Examination History
2024年03月14日
出願審査請求書
2024年11月26日
拒絶理由通知書
2024年11月28日
手続補正書（自発・内容）
2024年11月28日
意見書
2025年01月14日
特許査定