Jun-Ichi Kumagai

Title: Innovations of Jun-Ichi Kumagai

Introduction

Jun-Ichi Kumagai is a notable inventor based in Aizuwakamatsu, Japan. He has made significant contributions to the field of materials science, particularly in the development of advanced copper alloys. With a total of 2 patents, his work focuses on enhancing the properties of copper sheets for various applications.

Latest Patents

Kumagai's latest patents include a Cu—Ni—Si-based copper alloy sheet that exhibits excellent mold abrasion resistance and shear workability. This innovative alloy maintains strength and conductivity while containing 1.0 mass % to 4.0 mass % of Ni and 0.2 mass % to 0.9 mass % of Si. The unique composition allows for a specific ratio of Ni—Si precipitate particles, enhancing the material's performance. Another significant patent is for a Cu—Mg—P-based copper alloy sheet that demonstrates improved fatigue resistance characteristics, particularly after exposure to high temperatures. This alloy contains 0.2% by mass to 1.2% by mass of Mg and 0.001% by mass to 0.2% by mass of P, ensuring durability in demanding conditions.

Career Highlights

Kumagai is currently employed at Mitsubishi Shindoh Co., Ltd., where he continues to innovate in the field of copper alloys. His work has been instrumental in advancing the performance of materials used in various industries.

Collaborations

Kumagai collaborates with several talented individuals, including Yoshio Abe and Shunroku Sukumoda, who contribute to his research and development efforts.

Conclusion

Jun-Ichi Kumagai's contributions to the field of materials science through his innovative patents have significantly impacted the industry. His work at Mitsubishi Shindoh Co., Ltd. continues to push the boundaries of what is possible with copper alloys.