Masayoshi Kohinata

Title: Masayoshi Kohinata: Innovator in Au-Sn Alloy Technology

Introduction

Masayoshi Kohinata is a notable inventor based in Sanda, Japan. He has made significant contributions to the field of materials science, particularly in the development of Au-Sn alloy technologies. With a total of 4 patents to his name, Kohinata's work has advanced the understanding and application of alloy materials in various industries.

Latest Patents

Kohinata's latest patents include innovative solutions for Au-Sn alloy bumps. One of his patents describes an Au-Sn alloy bump that does not include large voids, comprising a composition containing Sn at 20.5 to 23.5 mass % and the balance being Au and unavoidable impurities. This invention also details a structure where 0.5 to 30 area % of Sn-rich primary crystal phase is crystallized in the matrix. Another significant patent focuses on an Au-Sn alloy powder for solder paste, aimed at reducing the generation of voids. This powder has a composition of Sn at 20.5-23.5% by mass, with a microstructure that includes fine Sn-rich primary crystal phase regions.

Career Highlights

Throughout his career, Masayoshi Kohinata has worked with prominent companies such as Mitsubishi Materials Corporation and Daiwa Fine Chemicals Co., Ltd. His experience in these organizations has allowed him to refine his expertise in alloy materials and contribute to various innovative projects.

Collaborations

Kohinata has collaborated with notable colleagues in his field, including Masayuki Ishikawa and Makoto Toriumi. These partnerships have fostered a collaborative environment that encourages innovation and the sharing of ideas.

Conclusion

Masayoshi Kohinata's contributions to the field of Au-Sn alloy technology highlight his role as a significant inventor. His patents reflect a commitment to advancing material science and improving manufacturing processes. Kohinata's work continues to influence the industry and inspire future innovations.