Kunioki Kato

Title: **Kunioki Kato: A Pioneer in High Purity Chemical Production**

Introduction

Kunioki Kato, based in Hyogo, Japan, is an accomplished inventor with a remarkable portfolio of 11 patents. His innovative work primarily focuses on the production of high purity bis(4-hydroxyphenyl)sulfides, which have significant applications in various chemical processes.

Latest Patents

Kato's latest patents describe a refined process for producing high purity bis(4-hydroxyphenyl)sulfides. The method involves reacting phenols with sulfur dichloride in nonpolar organic solvents, followed by the removal of these solvents and the addition of polar organic solvents to dissolve the mixture at elevated temperatures. This process enables the crystallization of high purity bis(4-hydroxyphenyl)sulfides, which are essential in heat-sensitive recording materials. The resulting material features a melting point between 123.9°C and 124.9°C and is effectively utilized as a developer alongside a fluoran compound as a color former.

Career Highlights

Throughout his career, Kunioki Kato has made significant contributions to the field of chemistry and chemical engineering. He has worked with prominent companies such as Seitetsu Kagaku Co., Ltd. and Sumitomo Metal Industries, Inc., where he developed his expertise and innovated new methods in chemical processing.

Collaborations

Kato's journey in innovation has been enriched by collaborations with talented colleagues. Notably, he has partnered with Masao Kawamura and Hiroshi Goda, whose insights and expertise have further propelled his research endeavors and contributions to the field.

Conclusion

Kunioki Kato's inventive spirit and dedication to producing high purity substances underscore his status as a leading figure in chemical innovation. His patented processes not only advance scientific understanding but also enhance practical applications, marking his significant impact in the industry.