Tatsuhiko Fujinuma

Title: Innovations of Tatsuhiko Fujinuma

Introduction

Tatsuhiko Fujinuma is a notable inventor based in Tokyo, Japan. He has made significant contributions to the field of materials science, particularly in the development of high-purity metallic chromium and high oxygen chromium targets. With a total of seven patents to his name, Fujinuma's work has had a considerable impact on various industrial applications.

Latest Patents

Fujinuma's latest patents include a method of making high oxygen chromium targets. This invention provides a raw material for high oxygen chromium targets that effectively prevents the dust ejection phenomenon. The raw material comprises chromium crystalline particles dispersed in metallic chromium, ensuring that the surface of the oxide crystalline particles is in contact with the matrix of the metallic chromium. Another significant patent is an apparatus for producing high-purity metallic chromium. This novel method addresses issues such as reduced heating capability of the furnace and contamination of produced metallic chromium. By adding easily sulfidable metals like tin, nickel, and copper to crude metallic chromium, the mixture is heated in a vacuum furnace to achieve high purity.

Career Highlights

Fujinuma has worked with prominent companies such as Japan Metals & Chemicals Co., Ltd. and Japan Metals & Chemical Co. Inc. His experience in these organizations has allowed him to refine his expertise in materials science and patent development.

Collaborations

Fujinuma has collaborated with notable coworkers, including Kenichi Kobayashi and Hidenori Tomioka. Their joint efforts have contributed to the advancement of technologies in the field of metallic materials.

Conclusion

Tatsuhiko Fujinuma's innovative work in the development of high-purity metallic chromium and high oxygen chromium targets showcases his significant contributions to materials science. His patents reflect a commitment to addressing industrial challenges and advancing technology.