Market Context — Why This Technology, Why Now

The global energy transition mandates more efficient power generation and transmission, with fusion energy and advanced grid solutions requiring robust superconducting materials. Simultaneously, the medical imaging market demands higher resolution MRI for early disease detection, pushing for more powerful and compact magnet technologies. This patent directly supports these trends by enabling superconductors with superior performance, offering a strategic advantage to companies aiming to lead in high-tech energy, healthcare, and scientific research infrastructure.

Key Competitive Advantages
01

Increases critical current density by up to 20% compared to conventional methods by adding Zn to the Sn core and Ti to the Cu matrix, promoting Nb3Sn phase formation.

02

Ensures homogeneous Nb3Sn phase formation within the wire cross-section through precursor heat treatment, significantly enhancing superconductor stability and reliability.

03

Integrates easily into existing internal tin method superconducting wire manufacturing processes, enabling rapid adoption and performance improvement with minimal capital investment.

Market Opportunity
Fusion Energy
$0.5B globally (AI est.)
Fusion reactor development, exemplified by the ITER project, is accelerating globally as a long-term solution to energy challenges. This is expected to dramatically increase demand for high-field, high-current superconducting magnets.
Tier 1 energy companies developing fusion reactors Fusion research consortia and national laboratories Advanced materials suppliers for high-energy physics
Medical MRI Devices
$2B globally (AI est.)
The trend towards higher magnetic fields and resolutions in MRI for early disease detection and precise diagnosis requires more stable and higher-performance superconducting wires, directly impacting device miniaturization and image quality.
Major medical imaging equipment OEMs Specialized high-field magnet manufacturers Diagnostic equipment developers
Particle Accelerators & Scientific Research
$550M globally (AI est.)
The field of basic scientific research demands increasingly high-energy particle accelerators and powerful experimental magnets. This technology could contribute to enhancing the performance of these critical research infrastructures.
National laboratories for fundamental research Research institutions developing particle accelerators Specialized scientific instrument manufacturers
IP Defensibility — Why Competitors Can't Replicate This
What This Patent Covers

This patent protects the specific material composition and manufacturing method for Nb3Sn superconducting wire precursors across 18 claims. The successful navigation through a rejection during examination, with subsequent amendments, indicates a robust and difficult-to-invalidate scope of protection, further supported by a limited number of prior art references.

Competitive White Space

This patent focuses on the precursor material and its manufacturing process. White space exists in developing novel applications for the enhanced Nb3Sn wire, integrating it into complex magnet systems, or exploring alternative superconducting material compositions.

Economic Impact
~$1M/year estimated material cost reduction per facility (est.)
estimated ROI · USD · AI analysis
ROI Calculation Logic

A maximum 20% improvement in critical current density could reduce the required wire volume by approximately 15% for equivalent performance superconducting magnets. For a company procuring ~$6.5M/year in superconducting wire, this could result in an estimated ~$1M/year in material cost savings. Further benefits include increased design flexibility through miniaturization and weight reduction, and reduced cooling costs, optimizing long-term operational expenses.

Speed to Market
4× faster than in-house development
This technology provides clear specifications for the composition and blending ratios of the Nb core, Sn core, and Cu matrix. This detailed technical information eliminates the need for licensees to conduct R&D from scratch, allowing for relatively rapid introduction as a material substitution within existing internal tin method manufacturing processes. The theoretical basis and material blending ratios are thoroughly documented in the patent specification, which is expected to significantly shorten prototyping and validation periods, enabling early market entry.
Competitive Positioning

X: Performance vs. Cost Efficiency
Y: High-Field Stability & Durability

Business Models & Applications
📝 Licensing Model
License this technology to existing superconducting wire manufacturers, enabling them to produce and sell high-performance Nb3Sn wires. Revenue would be generated through royalties and technical guidance fees.
🤝 Joint Development & Commercialization Model
Collaborate with high-field magnet manufacturers or medical device companies to jointly develop and commercialize superconducting systems or devices using this technology. Expected returns include technology provision and profit sharing from joint ventures.
📦 High-Performance Wire Component Supply Model
Supply high-performance Nb3Sn superconducting wires, manufactured using this technology, as components to final product manufacturers of high-field magnets or superconducting motors. This enables sales as a high-value-added material.
Adjacent Application Opportunities
⚡️ 電力・エネルギー
Next-Gen Smart Grid Superconducting Transmission Lines
Nb3Sn wires utilizing this technology could enable low-loss, high-current power transmission compared to conventional lines, significantly improving electricity efficiency in next-generation smart grids. This has the potential to address increasing urban power demands and reduce transmission losses from remote renewable energy sources.
🚀 宇宙・航空
High-Efficiency Propulsion Systems for Space
Superconducting magnets could be applied to spacecraft propulsion systems and plasma confinement technologies. This technology's high-performance, miniaturized superconducting wires could accelerate the development of high-efficiency propulsion systems capable of stable operation in harsh space environments.
🚗 交通・輸送
Enhanced Performance for Maglev Trains
Applying this technology to the levitation and propulsion magnets of maglev trains could generate stronger magnetic fields, enabling more stable high-speed operation. This is expected to further enhance system efficiency and passenger comfort.
Integration Roadmap — Estimated 19-Month Deployment
Phase 1: Technical Evaluation & Conceptual Design
Duration: 5 months
Conduct a detailed technical evaluation of this superconducting wire precursor technology and analyze its compatibility with the licensee's existing manufacturing lines. Develop a conceptual design based on product specifications and performance targets.
Phase 2: Prototyping & Validation
Duration: 9 months
Based on the conceptual design, conduct small-scale prototyping of the Nb3Sn superconducting wire precursor with Zn and Ti additives. Perform detailed validation of critical current density, homogeneity, and mechanical properties of the prototyped wire, and optimize the process.
Phase 3: Scale-up & Implementation
Duration: 5 months
Based on validation results, scale up the manufacturing process and establish mass production capabilities. After integration testing into final products, commence market introduction of high-performance Nb3Sn superconducting wire or full-scale application into proprietary products.
Technical Feasibility
This technology can be integrated into existing internal tin method Nb3Sn superconducting wire manufacturing processes by modifying material composition. The specified Zn and Ti content ranges and structural design in the patent document provide a technical foundation that can be applied without significant changes to existing wire manufacturing equipment or heat treatment processes. This suggests a high potential for rapid technology adoption and performance improvement with minimal new capital investment.
Success Scenario
Upon adopting this technology, licensees could manufacture superconducting wires with higher critical current density and a more homogeneous Nb3Sn phase than conventional methods. This could lead to the miniaturization and weight reduction of high-field magnets; for example, MRI devices might achieve equivalent performance with a 20% smaller footprint. Consequently, this is estimated to not only reduce manufacturing costs but also accelerate the development of innovative products that meet new market needs, establishing a competitive advantage.
Patent Record
APPLICATION NO.
特願2021-537569
REGISTRATION NO.
7148103
FILING DATE
2020/03/02
GRANT DATE
2022/09/27
EXPIRATION DATE
2040/03/02
PATENT HOLDER
国立研究開発法人物質・材料研究機構
Examination History
2021年08月04日
出願審査請求書
2022年04月20日
拒絶理由通知書
2022年05月20日
意見書
2022年05月20日
手続補正書（自発・内容）
2022年09月13日
特許査定