Yoritoshi Minamino

Title: Innovations of Yoritoshi Minamino

Introduction

Yoritoshi Minamino is a notable inventor based in Suita, Japan. He has made significant contributions to the field of materials science, particularly in the development of high-performance steel. With a total of 2 patents, his work has garnered attention for its innovative approaches to enhancing the properties of steel.

Latest Patents

Minamino's latest patents focus on creating steel with high hardness and excellent toughness. The first patent describes a steel composition that includes, in mass %, 0.55-1.10% C, 0.10-2.00% Si, 0.10-2.00% Mn, 0.030% or less P, 0.030% or less S, 1.10-2.50% Cr, and 0.010-0.10% Al, with the balance consisting of Fe and unavoidable impurities. This steel exhibits a dual-phase structure of martensitic structure and spheroidized carbide, with spheroidized cementite particles constituting at least 90% of all cementite particles. The second patent also focuses on steel with high hardness and excellent toughness, containing, in mass %, 0.40-1.00% C, 0.10-2.00% Si, 0.10-1.00% Mn, 0.030% or less P, 0.030% or less S, 1.10-3.20% Cr, 0.010-0.10% Al, and 0.15-0.50% V. This steel features a martensitic structure with finely dispersed Fe-based ε carbides, and its prior austenite grain size is 20 μm or less.

Career Highlights

Throughout his career, Minamino has worked with prestigious institutions, including Osaka University and Komatsu Corporation. His research has significantly impacted the field of metallurgy, particularly in the development of advanced steel materials.

Collaborations

Minamino has collaborated with notable colleagues such as Koji Yamamoto and Yusuke Hiratsuka. Their combined expertise has contributed to the advancement of innovative steel technologies.

Conclusion

Yoritoshi Minamino's contributions to the field of materials science, particularly in high