Toshiyuki Hakata

Title: **Toshiyuki Hakata: Innovator in Magnetic Particle Technologies**

Introduction

Toshiyuki Hakata, based in Hiroshima, Japan, is a prominent inventor with a remarkable portfolio of 17 patents. His work predominantly focuses on the development of advanced materials, particularly in the fields of magnetic particles and paving compositions. This article delves into his latest patents, career highlights, and collaborations that underline his contributions to innovation.

Latest Patents

Toshiyuki Hakata’s recent patents include two significant inventions that showcase his expertise in magnetic particle technology. The first invention pertains to **magnetic iron oxide fine particles** and **magnetic particle-containing water dispersion**. This innovative water dispersion features magnetic particles with a primary diameter of 5 to 15 nm, and an average secondary particle diameter of 10 to 60 nm. Remarkably, the dispersion exhibits a zeta potential of not more than -20 mV when the pH ranges between 6 and 8. The process for producing this dispersion involves heating an aqueous solution containing a carboxyl group-containing polymer, followed by a series of reactions that yield a product useful for creating magnetic particle-containing drugs for diagnostics and therapies.

The second invention involves a **paving resin composition** that combines thermoplastic resin in small lumps, specifically utilizing an ethylene-vinyl acetate copolymer. This paving composition is engineered to melt quickly, enhance adhesion properties to aggregates, and produce a durable paved surface that resists deformation and cracking. Notably, this paving resin can be directly added to a mixer, eliminating the need for costly cleaning processes of measurement devices.

Career Highlights

Throughout his journey as an inventor, Toshiyuki Hakata has made substantial contributions while working with recognized companies, such as Toda Kogyo Corporation and Dic-Hercules Chemicals, Inc. His diverse experience in these organizations has allowed him to refine his innovative ideas and implement practical solutions in various applications.

Collaborations

Toshiyuki Hakata’s work often involved collaboration with accomplished colleagues, including Shigeru Takaragi and Tomoko Okita. These partnerships have fostered a creative environment that led to the development of groundbreaking technologies and patented inventions.

Conclusion

Toshiyuki Hakata stands as a significant figure in the realm of material sciences and innovation. His extensive patent portfolio highlights his dedication to enhancing technologies such as magnetic particle dispersions and durable paving compositions. Through his career and collaborations, Hakata continues to influence the field and pave the way for future innovations.