Hiroko Tokoro

Title: Hiroko Tokoro: Innovator in Magnetic Materials

Introduction

Hiroko Tokoro is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of magnetic materials, holding a total of 9 patents. His innovative work focuses on the development of iron-based oxide magnetic powders and advanced recording devices.

Latest Patents

One of Tokoro's latest patents is for an iron-based oxide magnetic powder and the method for producing it. This invention involves a raw material solution containing trivalent iron ions, which are combined with an alkaline aqueous solution to adjust the pH of the reaction system. The process includes the addition of hydroxycarboxylic acid and subsequent neutralization to create a precipitate of iron oxyhydroxide. The resulting particles are coated with silicon oxide and heated to form ε-iron oxide particles, which are suitable for use in magnetic recording media. Another notable patent is for a recording device that applies an external magnetic field to a magnetic recording medium while utilizing a light irradiation unit to enhance the magnetic field, allowing for improved magnetization.

Career Highlights

Hiroko Tokoro has worked with esteemed institutions such as The University of Tokyo and Dowa Electronics Materials Co., Ltd. His research and development efforts have led to advancements in magnetic materials that are crucial for modern technology.

Collaborations

Throughout his career, Tokoro has collaborated with notable colleagues, including Shin-ichi Ohkoshi and Asuka Namai. These partnerships have fostered innovation and contributed to the success of his projects.

Conclusion

Hiroko Tokoro's contributions to the field of magnetic materials and recording devices highlight his role as a leading inventor. His innovative patents and collaborations continue to influence advancements in technology.