Hisao Shirasawa

Title: Hisao Shirasawa: Innovator in Diamond Particle Technology

Introduction

Hisao Shirasawa is a notable inventor based in Oyama, Japan. He has made significant contributions to the field of diamond particle technology, holding 2 patents that focus on the collection and production of minute diamond particles.

Latest Patents

His latest patents include a method for collecting minute diamond powder and a slurry comprising the same in suspension. One of the principal objectives of this invention is to collect minute diamond particles of 20 nm and smaller with high precision and definition using the MICROTRAC UPA 150. The invention outlines a method for recovering these minute diamond particles, which involves mechanically crushing a raw material of single crystalline diamond particles to prepare starting minute particles. The method also includes imparting a hydrophilic quality to the surface of the diamond particles, allowing them to be dispersed in water to form a slurry that is kept weakly alkaline.

Career Highlights

Hisao Shirasawa has dedicated his career to advancing the technology surrounding diamond particles. His innovative methods have paved the way for more efficient production and collection techniques, which are crucial in various industrial applications.

Collaborations

He has collaborated with notable coworkers, including Hiroshi Yamanaka and Hiroshi Ishizuka, who have contributed to his research and development efforts.

Conclusion

Hisao Shirasawa's work in the field of diamond particle technology exemplifies innovation and dedication. His patents reflect a commitment to advancing the methods of collecting and producing minute diamond particles, which have significant implications for various industries.