Hiroki Fujitsuka

Title: Hiroki Fujitsuka: Innovator in Sintered Materials

Introduction

Hiroki Fujitsuka is a notable inventor based in Matsudo, Japan. He has made significant contributions to the field of sintered materials, particularly in the development of valve guides. With a total of 7 patents to his name, Fujitsuka's work showcases his expertise and innovative spirit.

Latest Patents

Fujitsuka's latest patents include a sintered valve guide and a production method for it. The sintered valve guide features a metallic structure with a mixed composition, including pearlite, an Fe-P-C ternary eutectic phase, a ferrite phase, a copper phase, and pores. The hard phase within this structure is dispersed at 2 to 15 mass % and consists of hard particles within an alloy matrix. Another significant patent involves a sintered material for valve guides, which comprises specific percentages of carbon, copper, phosphorus, tin, and iron. This material exhibits a unique metallic structure made of pores and a matrix, enhancing its performance in various applications.

Career Highlights

Fujitsuka has worked with prominent companies, including Hitachi Powdered Metals Co., Ltd. His experience in these organizations has allowed him to refine his skills and contribute to advancements in material science.

Collaborations

Throughout his career, Fujitsuka has collaborated with talented individuals such as Hideaki Kawata and Kunio Maki. These partnerships have fostered innovation and the exchange of ideas in the field of sintered materials.

Conclusion

Hiroki Fujitsuka's contributions to the field of sintered materials, particularly in valve guides, highlight his innovative approach and dedication to advancing technology. His patents reflect a deep understanding of material properties and their applications, making him a significant figure in his industry.