From Jiaxing to Tokyo: NanoFiltech | FREBANG Achieves Japanese Patent Milestone in Nanofiber Filtration Technology
Created on 10.15
From Jiaxing to Tokyo: NanoFiltech | FREBANG Achieves Japanese Patent Milestone in Nanofiber Filtration Technology
— Nine Patent Claims Allowed by the Japan Patent Office, Marking a New Chapter in Advanced Air Filtration Innovation
A Milestone in International Patent Recognition
In October 2026, FREBANG (Jiaxing Frebang New Material Technology Co., Ltd.), the company behind the NanoFiltech brand, received a Notice of Allowance from the Japan Patent Office (JPO) for its independently developed invention, "A Nanofiber Composite Filter Material for Air Purification and Its Preparation Method" (Japanese Patent Application No. 2026-525519).
Following substantive examination, all nine patent claims were allowed, marking an important achievement in the company's international intellectual property strategy.
Japan is recognized for its rigorous patent examination procedures and highly competitive advanced materials industry. With established manufacturers such as Toray and Teijin maintaining extensive intellectual property portfolios, the filtration materials sector represents a demanding technological environment.
This achievement reflects FREBANG's continued investment in original research, material engineering, and the development of proprietary nanofiber filtration technologies.
For NanoFiltech, it also represents another important step toward strengthening its technological credibility and expanding its presence in international high-performance filtration markets.
Why Nanofibers? Why Advanced Air Filtration?
Clean air is essential to modern industrial manufacturing.
From semiconductor fabrication facilities and pharmaceutical cleanrooms to AI data centers, lithium-ion battery production, and advanced electronics manufacturing, high-performance air filtration materials play a critical role in maintaining controlled environments.
However, conventional filtration technologies often face a fundamental challenge:
How can high filtration efficiency be achieved while maintaining low airflow resistance?
Nanofiber filtration technology offers a promising approach.
With fiber diameters reaching the nanometer scale, nanofibers can form fine, interconnected filtration structures that support effective particle capture while allowing airflow resistance to be optimized through material and filter design.
NanoFiltech focuses on developing advanced nanofiber filtration materials that balance three essential performance factors:
- l High Filtration Efficiency: Effective capture of fine airborne particles.
- l Low Pressure Drop: Reduced airflow resistance to support energy-efficient air handling.
- l Stable Filtration Performance: Consistent filtration characteristics for demanding industrial applications.
The newly allowed Japanese patent covers innovations in nanofiber composite filter material structures and preparation methods.
These technologies have potential applications across several high-performance industrial sectors, including semiconductor manufacturing, AI data centers, pharmaceuticals, battery production, advanced laboratories, and renewable energy facilities.
Years of Innovation, Recognized Internationally
Based in Jiaxing, China, FREBANG has dedicated years to the research, development, and industrial application of advanced nanofiber materials.
Through sustained investment in material science and manufacturing technologies, the company has developed a diversified portfolio of high-performance functional materials.
Under the NanoFiltech brand, FREBANG provides advanced air filtration products and materials for international industrial markets, including:
NANOAIR Nanofiber Filter Media
High-performance nanofiber filtration media designed to combine efficient particle capture with low airflow resistance for HVAC and industrial filtration applications.
HEPA and ULPA Filters
High-efficiency air filtration solutions for cleanrooms, semiconductor manufacturing, pharmaceutical facilities, and other controlled environments.
Industrial Dust Collection Filters
Filtration products for industrial dust collection systems, supporting particulate control in demanding manufacturing and processing environments.
Advanced Functional Materials
Beyond filtration, FREBANG continues developing innovative materials, including Thermiso flexible ceramic thermal insulation materials and fluorine-free nanofiber waterproof breathable membranes.
Together, these technologies reflect the company's broader commitment to advanced material engineering and industrial innovation.
The Japanese patent allowance is not an isolated achievement. It represents another step in FREBANG's long-term international intellectual property development.
For NanoFiltech, this milestone reinforces its focus on bringing proprietary filtration technology to customers seeking advanced materials, reliable performance, and application-specific filtration solutions.
Strengthening NanoFiltech's Global Filtration Strategy
As industries worldwide pursue cleaner manufacturing environments, higher energy efficiency, and more advanced contamination control, demand for high-performance filtration materials continues to evolve.
NanoFiltech is committed to addressing these challenges through ongoing research and development in nanofiber filtration technology.
The Japanese patent allowance supports the company's international technology strategy and provides a foundation for further development of advanced filtration materials for global markets.
Looking ahead, NanoFiltech will continue focusing on applications where filtration efficiency, pressure drop, and material performance are critical considerations.
These include:
- l Semiconductor and electronics manufacturing
- l AI data centers and HVAC systems
- l Pharmaceutical and biotechnology cleanrooms
- l Lithium-ion battery manufacturing
- l Industrial dust collection
- l Advanced laboratories and precision manufacturing
By combining material innovation with practical industrial applications, NanoFiltech aims to provide filtration solutions tailored to the evolving requirements of international customers.
Beyond the Milestone: Innovation Without Borders
A patent milestone is not the end of innovation. It is the beginning of new opportunities.
From the development of nanofiber materials in Jiaxing to recognition by the Japan Patent Office, FREBANG's journey reflects years of research, engineering, and commitment to technological progress.
Through NanoFiltech, the company will continue bringing high-efficiency, low-resistance nanofiber filtration materials and advanced air filtration solutions to customers worldwide.
As global industries move toward cleaner, more efficient, and more sustainable manufacturing, NanoFiltech remains committed to advancing the technologies that make these goals possible.
NanoFiltech — Advancing Filtration Technology Beyond Borders.
For more information about NanoFiltech's nanofiber filtration media, HEPA and ULPA filters, or industrial air filtration solutions, contact our team to discuss your application requirements.
HQ: Room 9A, 728 Yan'an West Road, Changning District, Shanghai
Factory Ⅰ：No. 1160, Xinxing 3rd Road
Pinghu Economic & Technological Development Zone, Pinghu, Zhejiang, China
Factory Ⅱ: A06, Tuolingtou Industrial Zone, Yangquan, Shanxi, China
HQ: Room 9A, 728 Yan'an West Road, Changning District, Shanghai
Factory Ⅰ：No. 1160, Xinxing 3rd Road
Pinghu Economic & Technological Development Zone, Pinghu, Zhejiang, China
Factory Ⅱ: A06, Tuolingtou Industrial Zone, Yangquan, Shanxi, China
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