Yoshihisa Kiyotoki

Title: Yoshihisa Kiyotoki: Innovator in Fluid Contact Technology

Introduction

Yoshihisa Kiyotoki is a prominent inventor based in Hitachinaka, Japan. He has made significant contributions to the field of fluid contact technology, holding a total of 13 patents. His work focuses on enhancing the performance and durability of fluid contact members and transition pieces.

Latest Patents

Kiyotoki's latest patents include a fluid contact member and a method of manufacturing this member. The fluid contact member is designed to improve corrosion resistance compared to existing technologies. It features a cobalt-based alloy phase with a dendrite structure and a compound phase containing chromium carbide. The average interval between adjacent secondary arms in the dendrite is optimized to be 5 μm or less, preferably 3 μm or less. Additionally, he has developed a method for manufacturing a transition piece that allows for high flexibility in adjusting length and shape. This transition piece facilitates dissimilar metal welding and incorporates an intermediate layer formed through an additive manufacturing method.

Career Highlights

Throughout his career, Kiyotoki has worked with notable companies such as Hitachi, Ltd. and Hitachi GE Nuclear Energy, Ltd. His experience in these organizations has contributed to his expertise in innovative manufacturing processes and materials.

Collaborations

Kiyotoki has collaborated with esteemed colleagues, including Mitsuo Chigasaki and Shizuo Matsushita. Their joint efforts have further advanced the development of technologies in fluid contact applications.

Conclusion

Yoshihisa Kiyotoki's contributions to fluid contact technology and his innovative patents reflect his dedication to improving industrial applications. His work continues to influence the field and showcases the importance of innovation in engineering.