Shinichiro Sumi

Title: Shinichiro Sumi: Innovator in Conductive Materials and Aluminum Alloys

Introduction

Shinichiro Sumi is a notable inventor based in Shizuoka, Japan. He has made significant contributions to the field of conductive materials and aluminum alloys, holding a total of 3 patents. His work focuses on enhancing the performance and reliability of materials used in various applications.

Latest Patents

One of Sumi's latest patents is for a conductive member and its production method. This invention aims to provide a conductive member that can suppress an increase in contact resistance. The solution involves a conductive member featuring a nickel (Ni) plating layer on the surface of contact parts on a substrate. The arithmetic average roughness (Sa) of the Ni plating layer's surface is specified to be 20 nm or more. Additionally, the full width half maximum of a peak at the position of a Ni (200) plane in an x-ray diffraction diagram is preferably 0.6 or less, while the indentation hardness of the Ni plating layer is ideally 5000 n/mm or less.

Another significant patent by Sumi is for a high proof stress aluminum alloy extrusion material that exhibits superior bendability and crack resistance. This aluminum alloy comprises 5.0 to 7.0 wt % of zinc, 0.5 to 1.5 wt % of magnesium, 0.05 to 0.3 wt % of copper, no greater than 0.15 wt % of zirconium, 0.1 to 0.4 wt % of iron, and 0.05 to 0.4 wt % of silicon, with the balance being aluminum and impurities. Notably, at least 90% of the metallographic structure is a recrystallized structure.

Career Highlights

Shinichiro Sumi has worked with prominent companies such as Nippon Light Metal Company, Ltd. and Honda Motor Co., Ltd. His experience in these organizations has contributed to his expertise in material science and engineering.

Collaborations

Sumi has collaborated with talented individuals in his field, including Yosuke Nishikawa and Sayuri Shimizu. These collaborations have likely enriched his research and development efforts.

Conclusion

Shinichiro Sumi is a distinguished inventor whose work in conductive materials and aluminum alloys has led to innovative solutions