Norikazu Koyuhara

Title: Norikazu Koyuhara: Innovator in Ferrite Technology

Introduction

Norikazu Koyuhara is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of ferrite technology, holding a total of 9 patents. His work has been instrumental in advancing materials used in various electronic applications.

Latest Patents

Koyuhara's latest patents include a sintered MnZn ferrite body. This innovative material contains main components comprising 53.30-53.80% by mol of Fe calculated as FeO, 6.90-9.50% by mol of Zn calculated as ZnO, and the balance of Mn calculated as MnO. Additionally, it includes sub-components such as 0.003-0.020 parts by mass of Si calculated as SiO and a density of 4.65 g/cm or more. Another notable patent is for a sintered Ni ferrite body, which has a composition of 47.0-48.3% by mol of FeO, 14.5% or more and less than 25% by mol of ZnO, and an average crystal grain size of more than 2.5 µm and less than 5.5 µm.

Career Highlights

Throughout his career, Koyuhara has worked with esteemed companies such as Hitachi Metals, Ltd. and Hitachi Ferrite Electronics, Ltd. His experience in these organizations has allowed him to refine his expertise in ferrite materials and their applications in electronics.

Collaborations

Koyuhara has collaborated with notable coworkers, including Tomoyuki Tada and Yasuharu Miyoshi. Their combined efforts have contributed to the development of advanced ferrite technologies.

Conclusion

Norikazu Koyuhara's innovative work in ferrite technology has led to significant advancements in the field. His numerous patents reflect his dedication to improving materials for electronic applications.