Yoichi Ueda

Title: The Innovative Contributions of Yoichi Ueda

Introduction

Yoichi Ueda is a notable inventor based in Neyagawa, Japan. He has made significant contributions to the field of ink technology, particularly with his innovative aqueous pigment ink composition. His work has implications for various applications, including printing and writing.

Latest Patents

Ueda holds a patent for an aqueous pigment ink composition. This composition comprises water and oxidized carbon black that is stably dispersed in the water. The oxidized carbon black is obtained by oxidizing carbon black using hypohalous acid and/or its salt. Notably, at least a part of the acidic group on the surface of the oxidized carbon black associates with an amine compound to form an ammonium salt. This innovative ink composition allows for smooth printing with inkjet nozzles and fine pen tips, while also providing sufficient density. Furthermore, the traces recorded using this ink composition exhibit excellent water resistance.

Career Highlights

Yoichi Ueda is associated with Orient Chemical Industries, Ltd., where he continues to develop and refine his innovative products. His work has garnered attention for its practical applications in the ink industry.

Collaborations

Ueda has collaborated with notable coworkers, including Toshiyuki Nagasawa and Sohko Itoh. Their combined expertise contributes to the advancement of ink technology and related fields.

Conclusion

Yoichi Ueda's contributions to the development of aqueous pigment ink compositions highlight his innovative spirit and dedication to improving printing technologies. His work not only enhances the quality of printed materials but also ensures durability and performance.