Toshihiro Hosoi

Title: Innovations of Toshihiro Hosoi

Introduction

Toshihiro Hosoi is a prominent inventor based in Saitama, Japan. He has made significant contributions to the field of materials science, particularly in the development of advanced resin compositions and dielectric materials. With a total of 12 patents to his name, his work has had a substantial impact on the electronics industry.

Latest Patents

Hosoi's latest patents include innovations such as a resin composition, copper foil with resin, dielectric layer, copper-clad laminate, capacitor element, and printed wiring board with a built-in capacitor. One of his notable inventions is a resin composition that greatly improves voltage endurance while ensuring high capacitance and excellent circuit adhesion when used as the dielectric layer of a capacitor. This composition includes a binder component consisting of bisphenol S, an epoxy resin curing agent with a phenolic hydroxyl group, and an epoxy resin, along with a dielectric filler. Another significant patent involves a resin composition designed to control the decrease in capacitance or dielectric constant at high temperatures, ensuring high dielectric characteristics and strong adhesion to circuits. This composition contains an epoxy resin, a diamine compound, and a polyimide resin, along with a dielectric filler made of a metal oxide containing elements such as Ba, Ti, Sr, Pb, Zr, La, Ta, and Bi.

Career Highlights

Toshihiro Hosoi is currently employed at Mitsui Mining & Smelting Company, Ltd., where he continues to innovate and develop new materials for various applications. His work has been instrumental in advancing the capabilities of electronic components, particularly in enhancing their performance and reliability.

Collaborations

Throughout his career, Hosoi has collaborated with notable colleagues, including Yoshihiro Yoneda and Toshifumi Matsushima. These collaborations have fostered a creative environment that has led to numerous advancements in their respective fields.

Conclusion

Toshihiro Hosoi's contributions to the field of materials science and electronics are noteworthy. His innovative patents and ongoing work at Mitsui Mining & Smelting Company, Ltd. continue to shape the future of electronic materials.