Shigefumi Nishimura

Title: Shigefumi Nishimura: Innovator in Immersion Plating Technology

Introduction

Shigefumi Nishimura is a notable inventor based in Yawata, Japan. He has made significant contributions to the field of immersion plating, particularly with his innovative approach to tin-lead alloys. His work has implications for various industries that rely on effective plating techniques.

Latest Patents

Nishimura holds a patent for a "Bath for immersion plating tin-lead alloys." This invention provides a bath that includes tin(II) ions, lead(II) ions, organic sulfo groups, and thiourea or a mixture of thiourea and a thiourea derivative as a complexing agent. The inclusion of organic sulfo groups allows for the stable dissolution of insoluble thiourea complexes in the bath solution. This advancement eliminates the need for maintaining high temperatures, which is a common requirement in conventional immersion plating baths. As a result, his invention achieves stable plating and extends the life of the bath. Additionally, the use of thiourea derivatives prevents the deposition of whiskers, ensuring uniform and smooth plating.

Career Highlights

Nishimura is associated with Shimizu Co., Ltd., where he has applied his expertise in plating technology. His innovative work has positioned him as a key figure in the development of advanced plating solutions.

Collaborations

Nishimura has collaborated with notable colleagues, including Masao Fukuda and Yoshiji Shimizu. Their combined efforts have contributed to the advancement of plating technologies and innovations in the field.

Conclusion

Shigefumi Nishimura's contributions to immersion plating technology demonstrate his commitment to innovation and excellence. His patent for a bath for immersion plating tin-lead alloys showcases his ability to solve complex problems in the industry. Through his work, he continues to influence the future of plating technologies.