Company Filing History:
Years Active: 1980
Title: Yoichi Kumada: Innovator in Chlorinated Copper Phthalocyanine Production
Introduction
Yoichi Kumada is a notable inventor based in Zushi, Japan. He has made significant contributions to the field of chemical engineering, particularly in the production of highly chlorinated copper phthalocyanine. His innovative approach has led to advancements in the synthesis of this important compound.
Latest Patents
Kumada holds a patent for a process that involves charging chlorine under an elevated pressure of 1 to 20 Kg/cm² (gauge) into a solution of copper phthalocyanine. This process is conducted in the presence of pyrosulfuryl chloride and a catalyst of sulfur or sulfur chloride. The formation of pyrosulfuryl chloride occurs through a reaction involving chlorosulfonic acid, chlorine, and sulfur or sulfur chloride under elevated pressure. Additionally, an auxiliary catalyst such as iodine, iodine chloride, or a metal chloride can be incorporated to enhance the chlorination process. He has 1 patent to his name.
Career Highlights
Kumada is associated with Kawasaki Kasei Chemicals Ltd., where he has applied his expertise in chemical processes. His work has contributed to the company's reputation for innovation in chemical manufacturing.
Collaborations
Throughout his career, Kumada has collaborated with talented individuals such as Ryo Matsuura and Tomio Segawa. These collaborations have fostered a creative environment that encourages the development of new ideas and processes.
Conclusion
Yoichi Kumada's contributions to the field of chemical engineering, particularly in the production of highly chlorinated copper phthalocyanine, highlight his innovative spirit and dedication to advancing chemical processes. His work continues to influence the industry and inspire future innovations.