Hisamitsu Hatou

Title: Innovations of Hisamitsu Hatou: Pioneering Soft Magnetic Materials and Ball Screws

Introduction

Hisamitsu Hatou is a prominent inventor based in Tokyo, Japan, known for his groundbreaking contributions to soft magnetic materials and ball screw technologies. With a total of two patents to his name, Hatou's work emphasizes the importance of advanced materials in improving the efficiency and performance of various mechanical systems.

Latest Patents

His latest patents reflect his innovative approach to material science and engineering. His first patent describes a "Soft magnetic material and method for producing the same." This soft magnetic material is unique as it is sheet-shaped or foil-shaped, incorporating a high saturation magnetic flux density. The material is primarily composed of iron, carbon, and nitrogen, featuring a martensite phase that includes carbon and nitrogen, complemented by γ-Fe which contains a nitrogen-containing phase. The production method involves several critical steps, such as heating an iron-based material, carburizing it, and transforming its structure through controlled temperature processes, resulting in a thermally stable soft magnetic material that surpasses the saturation magnetic flux density of pure iron.

The second patent relates to a "Ball screw, method for manufacturing ball screw, power steering device, and method for manufacturing power steering device." In this invention, Hatou aims to enhance the durability and performance of ball screws. The design features a nut and screw shaft made from steel substrates, each designed with precise screw specifications. An essential aspect of the design is the carburized layers on both the nut and screw shaft, with a higher carbon concentration in the nut's carburized layer, optimizing friction and wear characteristics.

Career Highlights

Throughout his career, Hatou has worked with renowned companies, such as Hitachi Astemo Ltd. and Hitachi, Ltd. His contributions in these organizations have significantly advanced the fields of material applications and mechanical design.

Collaborations

In his journey as an inventor, Hatou has collaborated with other talented professionals, including notable coworker Kotaro Shiino. Their partnership reflects a commitment to innovation and research, further propelling their joint endeavors in developing advanced technologies.

Conclusion

Hisamitsu Hatou's work in the fields of soft magnetic materials and mechanical components exemplifies the spirit of innovation. Through his patents, he has contributed valuable advancements that promise to enhance industrial applications and improve the feasibility of various engineering solutions. His career underscores the impact that dedicated inventors can have on technology and industry.