Shiro Tomizawa

Title: Shiro Tomizawa: Innovator in Permanent Magnet Materials

Introduction

Shiro Tomizawa is a notable inventor based in Ichikawa, Japan. He has made significant contributions to the field of permanent magnet materials, particularly through his innovative patent.

Latest Patents

Tomizawa holds a patent for a rare type-earth-cobalt permanent magnet material. The patent, which is focused on the addition of at least two elements of Nb, V, Ta, and Zr to the ternary alloy of rare earth-Co-Cu, aims to enhance the coercive force, residual magnetization, and energy product of permanent magnets. This advancement allows for the use of copper and iron contents in the alloy of less than 10% and more than 6%, respectively. These specific percentages were previously avoided in prior art to prevent the reduction of Br and Hc.

Career Highlights

Shiro Tomizawa is associated with TDK Electronics Company, Limited, where he continues to work on innovative solutions in the field of magnet materials. His expertise and research have positioned him as a key figure in the development of advanced permanent magnets.

Collaborations

Tomizawa has collaborated with notable colleagues, including Tetsuhito Yoneyama and Tetsuo Hori. Their combined efforts contribute to the ongoing advancements in the field of magnet technology.

Conclusion

Shiro Tomizawa's work in the development of rare type-earth-cobalt permanent magnet materials showcases his innovative spirit and dedication to advancing technology. His contributions are significant in enhancing the performance of permanent magnets, which are crucial in various applications.