Nobushige Hiraishi

Title: Nobushige Hiraishi: Innovator in Rare-Earth Magnets

Introduction

Nobushige Hiraishi is a prominent inventor based in Nishinomiya, Japan. He has made significant contributions to the field of rare-earth magnets, holding a total of 4 patents. His work focuses on enhancing the properties and production methods of these essential materials.

Latest Patents

Hiraishi's latest patents include a method for preparing rare-earth system sintered magnets. The objective of this invention is to provide rare-earth system sintered magnets, such as R–Fe–B and R–Co systems, that exhibit excellent magnetic properties, unique configurations, small sizes, thin wall thicknesses, and intricate geometries. This method allows for easy granulation of alloy powders and suppresses chemical reactions between rare-earth systems and binder substances, reducing residual oxygen and carbon levels in the sintered products. Additionally, the production method improves flowability and lubricant capability during the forming process, enhancing dimension accuracy and productivity. Another notable patent involves a powder mixture for producing rare-earth iron sintered magnets, which incorporates a boric acid ester compound as a lubricant, resulting in improved magnetic properties.

Career Highlights

Throughout his career, Hiraishi has worked with notable companies, including Sumitomo Metal Industries, Inc. and Sumitomo Special Metals Co., Ltd. His expertise in the field of rare-earth magnets has positioned him as a key figure in advancing the technology and applications of these materials.

Collaborations

Hiraishi has collaborated with esteemed colleagues, including Yoshihisa Kishimoto and Wataru Takahashi. Their combined efforts have contributed to the development of innovative solutions in the realm of rare-earth magnets.

Conclusion

Nobushige Hiraishi's contributions to the field of rare-earth magnets have significantly impacted the industry. His innovative patents and collaborations highlight his dedication to advancing technology in this essential area.