Motohiro Hamada

Title: Motohiro Hamada: Innovator in Quinacridone Pigments

Introduction

Motohiro Hamada is a notable inventor based in Tokuyama, Japan. He has made significant contributions to the field of pigment technology, particularly through his innovative processes for preparing quinacridone pigments. His work has implications for various applications in the color industry.

Latest Patents

Hamada holds a patent for a process titled "Process for preparing gamma phase quinacridone." This patent describes a method for producing finely divided gamma crystal phase quinacridone pigments. The process involves dissolving a crude quinacridone in dimethyl sulfoxide with a caustic alkali and water, followed by the incorporation of a mineral acid or a mixture of a mineral acid with diluents. This innovative approach allows for the effective precipitation of finely divided gamma phase quinacridone.

Career Highlights

Motohiro Hamada is associated with Toyo Soda Manufacturing Co., Ltd., where he has been able to apply his expertise in pigment technology. His work has contributed to advancements in the production of high-quality pigments, which are essential for various industrial applications.

Collaborations

Hamada has collaborated with notable colleagues such as Katusya Shibata and Eiji Iwamoto. These collaborations have fostered a productive environment for innovation and development within the company.

Conclusion

Motohiro Hamada's contributions to the field of quinacridone pigments highlight his role as an important inventor in the industry. His innovative processes and collaborations continue to influence the development of advanced pigment technologies.