Hiroki Sawamoto

Title: Hiroki Sawamoto: Innovator in Conductive Ink Technology

Introduction

Hiroki Sawamoto is a notable inventor based in Ageo, Japan. He has made significant contributions to the field of conductive materials, particularly through his innovative patents. With a total of 3 patents, Sawamoto's work focuses on enhancing the properties of conductive inks and films.

Latest Patents

One of his latest patents is for a nickel ink and conductor film formed of nickel ink. This invention discloses a nickel ink that contains nickel particles dispersed in a specific dispersion medium. The medium comprises one or a combination of alcohol and glycol, both having a boiling point of 300°C or lower at atmospheric pressure. The nickel particles have an average primary particle size of 50 nm or smaller, resulting in a conductor film with a surface smoothness characterized by an average surface roughness Ra of 10 nm or smaller and a maximum surface roughness Rof 200 nm or smaller.

Another significant patent is for a conductive ink designed to form circuits with excellent adhesion to substrates. This conductive ink comprises metal powder or metal oxide powder dispersed in a dispersion medium. The medium contains a metal salt or metal oxide as a film density improver, which enhances the film density of the conductor formed using the ink. The main solvent in the dispersion medium is selected from water, alcohols, glycols, and saturated hydrocarbons with a boiling point of 300°C or less at normal pressure.

Career Highlights

Hiroki Sawamoto is currently employed at Mitsui Mining & Smelting Co., Ltd., where he continues to develop innovative materials for various applications. His work has positioned him as a key figure in the advancement of conductive technologies.

Collaborations

Throughout his career, Sawamoto has collaborated with notable colleagues, including Yoichi Kamikoriyama and Mikimasa Horiuchi. These collaborations have contributed to the successful development of his patents and innovations.

Conclusion

Hiroki Sawamoto's contributions to the field of conductive inks and films demonstrate his commitment to innovation and excellence. His patents reflect a deep understanding of material science and a drive to improve the functionality of conductive materials.