Hirokazu Tokoro

Title: Hirokazu Tokoro: Innovator in Lapping Tool Technology

Introduction

Hirokazu Tokoro is a notable inventor based in Kawasaki, Japan. He has made significant contributions to the field of manufacturing, particularly in the development of advanced lapping tools. With a total of 2 patents, his work showcases innovative approaches to material composition and tool design.

Latest Patents

Tokoro's latest patents focus on the creation of lapping tools made from spherical graphite cast iron. The manufacturing process involves casting a molten composition into a mold cavity and chilling one side to achieve unidirectional solidification. This method results in a lapping tool with a high percentage of sphericity, exceeding 80%. The composition includes specific weight percentages of carbon, silicon, manganese, phosphorus, sulfur, nickel, copper, molybdenum, magnesium, and iron. The resulting lapping tool boasts a graphite particle diameter of less than 100 microns, a density of graphite particles greater than 70/mm², and a Vickers hardness exceeding 200.

Career Highlights

Throughout his career, Tokoro has worked with prominent companies such as Toshiba Ceramics Co., Ltd. and Kabushiki Kaisha Toshiba. His experience in these organizations has allowed him to refine his skills and contribute to significant advancements in manufacturing technology.

Collaborations

Some of his notable coworkers include Norio Masuda and Masaharu Kinoshita. Their collaboration has likely fostered an environment of innovation and creativity in their respective projects.

Conclusion

Hirokazu Tokoro's contributions to the field of lapping tool technology exemplify the spirit of innovation. His patents reflect a deep understanding of material science and manufacturing processes. His work continues to influence the industry and inspire future inventors.