Toshiyuki Nishimura

Title: Innovations of Toshiyuki Nishimura

Introduction

Toshiyuki Nishimura is a notable inventor based in Ibaraki, Japan. He has made significant contributions to the field of materials science, particularly in the development of advanced thermoelectric materials and silicon nitride products. With a total of four patents to his name, his work has implications for various technological applications.

Latest Patents

One of his latest patents is titled "Sintered compact of lanthanum sulfide or cerium sulfide and method for preparing the same." This invention provides a lanthanum sulfide or cerium sulfide sintered compact that is usable as a thermoelectric conversion material with a high Seebeck coefficient. The sintered compact features a chemical composition of LaS or CeS, and its crystal structure consists of a mixture of beta and gamma phases, which enhances its Seebeck coefficient compared to a gamma single-phase structure. The production process involves preparing a beta-phase LaS or alpha-phase CeS powder with high purity, charging it into a carbon die, and hot-pressing the material under vacuum.

Another significant patent is "Silicon nitride sintered products and processes for their production." This patent describes a silicon nitride sintered product that comprises silicon nitride grains and a grain boundary phase. The grain boundary phase consists essentially of a single phase of a LuSiON crystal phase. The composition of the silicon nitride sintered product is defined within a ternary system phase diagram, which includes specific molar percentages of SiO and LuO.

Career Highlights

Toshiyuki Nishimura has worked at prestigious institutions such as the National Institute for Research in Inorganic Materials and the Japan Science and Technology Agency. His research has focused on the synthesis and characterization of advanced materials, contributing to the advancement of technology in his field.

Collaborations

Throughout his career, Nishimura has collaborated with notable colleagues, including Mamoru Mitomo and Naoto Hirosaki. These collaborations have further enriched his research and development efforts.

Conclusion

Toshiyuki Nishimura's innovative work in materials science, particularly in thermoelectric materials and silicon nitride products, showcases his significant contributions to technology. His patents reflect a commitment to advancing the field and improving material performance for various applications.