Hirofumi Hojo

Title: Hirofumi Hojo: Innovator in Powder Magnetic Core Technology

Introduction

Hirofumi Hojo is a prominent inventor based in Takasago, Japan. He has made significant contributions to the field of magnetic materials, particularly in the development of powder magnetic cores. With a total of 10 patents to his name, Hojo's work has advanced the understanding and application of soft magnetic powders.

Latest Patents

Hirofumi Hojo's latest patents include innovative technologies such as a powder mixture for powder magnetic cores and an iron-based soft magnetic powder for dust cores. The powder mixture is created by combining a lubricant, a solid lubricant, and a soft magnetic powder that is coated with an insulating layer. This mixture has specific content requirements, with a lubricant content ranging from 0.1% to 0.8% by mass and a solid lubricant content between 0.01% and 0.2% by mass. The second patent focuses on an iron-based soft magnetic powder that maintains high electric insulation and mechanical strength, even after annealing, thanks to a phosphate conversion coating on its surface.

Career Highlights

Throughout his career, Hirofumi Hojo has worked with notable organizations such as Kobe Steel, Ltd. and Hokkaido University. His experience in these institutions has allowed him to refine his expertise in magnetic materials and contribute to various research projects.

Collaborations

Hirofumi Hojo has collaborated with esteemed colleagues, including Hiroyuki Mitani and Tomotsuna Kamijo. These partnerships have fostered innovation and have been instrumental in advancing their shared research interests.

Conclusion

Hirofumi Hojo's contributions to the field of powder magnetic core technology are noteworthy. His innovative patents and collaborations highlight his commitment to advancing magnetic materials. His work continues to influence the industry and inspire future innovations.