Company Filing History:
Years Active: 1995
Title: Sadayoshi Yuge: Innovator in Chemical Purification
Introduction
Sadayoshi Yuge is a notable inventor based in Kanagawa, Japan. He has made significant contributions to the field of chemical engineering, particularly in the purification of refrigerants. His innovative approach has led to advancements in the efficiency of chemical processes.
Latest Patents
Sadayoshi Yuge holds a patent for a process for purifying 1,1,1,2-tetrafluoroethane. This process involves allowing an HF-containing 1,1,1,2-tetrafluoroethane-concentrated fraction to contact hydrofluoric acid at low temperatures. The method enables two-phase separation and the recovery of 1,1,1,2-tetrafluoroethane from the separated lower phase. The hydrofluoric acid used as the extraction solvent has a concentration ranging from 38 to 70% by weight, and the process operates at temperatures between -35°C and 35°C. This purification process allows for the economical recovery of HF from a 1,1,1,2-tetrafluoroethane fraction containing a small amount of HF.
Career Highlights
Sadayoshi Yuge is associated with Showa Denko Kabushiki Kaisha, a prominent company in the chemical industry. His work has been instrumental in enhancing the efficiency of chemical purification processes, contributing to both environmental sustainability and economic viability.
Collaborations
Sadayoshi has collaborated with notable coworkers, including Hiromoto Ohno and Tatsuharu Arai. Their combined expertise has fostered innovation and development in their respective fields.
Conclusion
Sadayoshi Yuge's contributions to the purification of chemical compounds exemplify the importance of innovation in the chemical industry. His patent for the purification of 1,1,1,2-tetrafluoroethane showcases his commitment to advancing chemical processes.