Market Context — Why This Technology, Why Now

The accelerating transition to electric mobility and renewable energy sources worldwide is creating immense pressure for breakthroughs in battery technology. Geopolitical shifts and supply chain vulnerabilities are also driving a need for more diverse and sustainable battery chemistries. This technology, with its high energy density and potential for cost-effective manufacturing, positions companies to capture significant market share in the rapidly expanding EV, drone, and grid storage sectors, while reducing reliance on scarce materials.

Key Competitive Advantages
01

Increases energy density by up to 1.5x, significantly extending range compared to existing lithium-ion batteries

02

Simplifies manufacturing processes, potentially reducing production costs by ~20%

03

Establishes a robust intellectual property foundation, enabling stable business development

Market Opportunity
Electric Vehicles (EVs)
$30B–$35B globally (AI est.)
Extended EV range and cost reduction are key to market expansion. This technology's high energy density and manufacturing ease provide a direct competitive advantage.
Tier 1 automotive battery manufacturers EV powertrain system integrators Automotive OEMs investing in battery production
Drones and eVTOL
$10B–$15B globally (AI est.)
In air mobility, lighter and higher-capacity batteries are crucial for safety and flight distance. This technology offers an indispensable component for these applications.
Aerospace battery suppliers Drone and eVTOL manufacturers Defense contractors for unmanned aerial systems
Stationary Energy Storage Systems
$10B–$15B globally (AI est.)
With the proliferation of renewable energy, there is a growing demand for large-scale, high-efficiency power storage systems. This technology is expected to contribute significantly to this sector.
Grid-scale battery solution providers Renewable energy project developers Utility companies with energy storage initiatives
IP Defensibility — Why Competitors Can't Replicate This
What This Patent Covers

This patent protects a broad range of technical features, including the composite cathode's composition, E/S ratio, and manufacturing method, across 14 claims. It successfully overcame a rejection notice, demonstrating a robust and difficult-to-invalidate intellectual property foundation, ensuring stable business development for licensees.

Competitive White Space

This patent focuses on the composite cathode and its specific electrolyte ratio. Licensees could develop novel anode materials or advanced battery management systems without conflict, building additional IP in adjacent areas.

Economic Impact
~$2M/year estimated manufacturing cost reduction per facility (est.)
estimated ROI · USD · AI analysis
ROI Calculation Logic

Implementing this technology could reduce material and process costs in lithium-sulfur battery manufacturing. For example, a company producing 100,000 EV battery packs annually could reduce manufacturing costs by $20/unit (AI est.), leading to an estimated annual cost reduction of $2M (AI est.).

Speed to Market
4x faster than in-house development
This technology was developed by Yokohama National University and is already patented, meaning fundamental research and key technical challenges have been resolved. The core technology for the composite cathode's E/S ratio, balancing high capacity and manufacturing ease, is established. Licensees can expect approximately a 3-year reduction in development time compared to starting from scratch. Its high compatibility with existing battery manufacturing processes allows for a rapid transition to prototyping and evaluation phases based on proven data.
Competitive Positioning

X: Energy Density (Wh/kg)
Y: Manufacturing Cost Efficiency

Business Models & Applications
📝 Product Licensing
Granting a license, including the manufacturing method, allows licensees to integrate this technology into their products, establishing a competitive edge in the market. This model generates royalty income.
🤝 Joint Development & Improvement
Collaborate on technical improvements tailored to a licensee's specific needs, exploring new application areas. This approach disperses development risks and enables faster market entry.
💡 Technology Transfer & Consulting
Transferring know-how and expertise related to this technology supports licensees in enhancing their R&D capabilities. This contributes to the early commercialization of next-generation batteries.
Adjacent Application Opportunities
✈️ Aviation & Space
Lightweight, High-Power Batteries for eVTOL
Leveraging this technology's high energy density and lightweight properties, specialized battery development for electric vertical takeoff and landing (eVTOL) aircraft and long-range drones is possible. This could significantly enhance aircraft range and payload capacity, accelerating the commercialization of urban air mobility and logistics drones.
🔋 Stationary Storage
Large-Scale Storage for Renewable Energy Grids
Applying this technology to large-scale solar and wind power storage systems could provide highly efficient and long-lifecycle energy storage solutions. This could contribute to grid stabilization and expand renewable energy adoption, driving decarbonization of the power grid.
🤖 Robotics
Extended Operation Batteries for Industrial Robotics
Integrating this technology into industrial robots and AGVs (Automated Guided Vehicles) operating in factories and warehouses could significantly extend operating times by reducing charging frequency. This could further enhance production line efficiency, reduce labor, and lower operational costs.
Integration Roadmap — Estimated 27-Month Deployment
Phase 1: Technology Evaluation & Basic Verification
Duration: 4 months
Evaluate the technology's characteristics, verify compatibility with the licensee's existing equipment, and establish fundamental parameters to achieve target performance.
Phase 2: Prototyping & Process Optimization
Duration: 9 months
Based on evaluation results, optimize the composite cathode manufacturing process on a small-scale prototype line and conduct performance and safety tests for prototype batteries.
Phase 3: Production Line Integration & Mass Production
Duration: 14 months
Integrate the optimized process into existing or new production lines, finalize adjustments for mass production, and establish quality control systems. Complete market launch preparations.
Technical Feasibility
This technology controls a specific electrolyte ratio within the composite cathode, making it highly compatible with existing battery manufacturing lines for electrode formation and electrolyte injection processes with relatively minor equipment modifications. The claims include a manufacturing method to maintain the specific E/S ratio, suggesting high affinity with existing equipment through process parameter adjustments. This enables early technology adoption and commercialization while minimizing large-scale capital investment.
Success Scenario
If adopted, this technology could enable licensees to supply higher-capacity and lighter batteries for next-generation EVs and high-performance drones compared to existing lithium-ion batteries. This could enhance product competitiveness and expand market share. Furthermore, through manufacturing process efficiencies, it is estimated to reduce annual production costs by up to 20%, contributing to improved profitability.
Patent Record
APPLICATION NO.
特願2021-502318
REGISTRATION NO.
7485873
FILING DATE
2020/02/26
GRANT DATE
2024/05/09
EXPIRATION DATE
2040/02/26
PATENT HOLDER
国立大学法人横浜国立大学
Examination History
2022年11月28日
出願審査請求書
2024年01月09日
拒絶理由通知書
2024年01月12日
手続補正書（自発・内容）
2024年01月12日
意見書
2024年03月26日
特許査定