Tomoharu Shigetomi

Title: **Tomoharu Shigetomi: Innovator in Steel Technology**

Introduction

Tomoharu Shigetomi is a prominent inventor based in Hiroshima, Japan, recognized for his significant contributions to the field of steel technology. He holds three patents that showcase his innovative approach to developing advanced steel products with enhanced properties.

Latest Patents

Among Tomoharu Shigetomi's noteworthy inventions is a patent for a "Steel sheet hot-dip-coated with Zn—Al—Mg-based system having excellent workability and method for manufacturing same." This invention details a steel sheet material characterized by a specific chemical composition, featuring a Ti/C equivalent ratio of 0.4 to 1.5. It focuses on the presence of a bainitic ferrite single phase or a composite phase. The patent outlines intricate specifications to ensure the steel exhibits desirable properties, including the control of microstructural elements like Ti-containing carbides.

Another significant patent by Shigetomi is for a "Stainless steel plate," which involves a unique manufacturing process utilizing temper rolling with a dull roller following finish cold rolling and bright annealing. This stainless steel plate achieves an arithmetic mean roughness of 0.2 to 1.2 μm and includes distinct features such as micro-pits with specific dimensional and density criteria, enhancing its usability in various applications.

Career Highlights

Tomoharu Shigetomi's career is marked by his role at Nisshin Steel Co., Ltd., where he has been instrumental in research and development. His work is pivotal in driving innovation within the company, leading to the advancement of revolutionary steel products that serve multiple industries.

Collaborations

Throughout his career, Tomoharu Shigetomi has worked alongside notable colleagues including Hiroshi Morikawa and Ryoji Hirota. Their collaborative efforts have contributed significantly to the development of cutting-edge steel technologies, reinforcing the importance of teamwork in advancing industrial innovations.

Conclusion

Tomoharu Shigetomi's innovative spirit and technical expertise in steel technology make him a notable figure in the industry. His patents reflect a commitment to enhancing material properties and manufacturing processes, highlighting the significance of continual innovation in meeting modern demands. As he continues to work at Nisshin Steel Co., Ltd., his contributions will likely shape the future of steel products and their applications in various fields.