Location History:
- Moriyama, JP (2018)
- Shiga, JP (2021)
Company Filing History:
2 out of 581 
2 out of 4 Years Active: 2018-2021
Title: Innovations by Takumi Kojima: Pioneering Filtration Technologies
Introduction
Takumi Kojima, an esteemed inventor based in Shiga, Japan, has made significant contributions to the field of filtration technology. With two patents to his name, he demonstrates a commitment to developing advanced solutions for high-purity chemical processing and depth filtration.
Latest Patents
Kojima's latest innovations include the "Backwashable Depth Filter" and the "Pleat Cartridge Filter."
The Backwashable Depth Filter is a hollow cylindrical filter made from thermoplastic resin fibers. It features a filter medium thickness of 5 to 25 millimeters, with a remarkable compression ratio of 0.2 or less under a load of 0.5 MPa. This design includes a meticulously engineered fiber layer structure with at least three distinct layers, where porosity is carefully controlled, and bonding points between fibers ensure optimal filtration performance.
The Pleat Cartridge Filter addresses the need for high-purity chemicals in the resist manufacturing process by minimizing metal elution from polyethylene. This cylindrical filter is constructed with a pleated filter material mounted on a core, utilizing a filtration membrane alongside a nonwoven spacer made from polyethylene fibers, achieving a metal content of less than 40 ppm.
Career Highlights
Throughout his career, Takumi Kojima has worked at JNC Corporation and JNC Filter Co., Ltd., where he has contributed to the development of advanced filtration products. His work has been instrumental in enhancing the reliability and efficiency of filtration systems.
Collaborations
In his professional journey, Kojima has collaborated with notable colleagues, including Kouichi Ozamoto and Kento Nakamura. Their collective efforts have fostered innovation within the industries they serve, advancing technological solutions for filtration challenges.
Conclusion
Takumi Kojima's innovative patents reflect his dedication to enhancing filtration technologies through thoughtful design and engineering. His contributions not only benefit industries reliant on high-purity chemicals but also showcase the potential for future innovations in filtration solutions.