Location History:
- Ibaraki, JP (2004)
- Kitaibaraki, JP (2009)
Company Filing History:
Years Active: 2004-2009
Title: Yasuo Ohnuki: Innovator in Diphenylsulfone Compounds
Introduction
Yasuo Ohnuki is a notable inventor based in Kitaibaraki, Japan. He has made significant contributions to the field of chemistry, particularly in the production of diphenylsulfone compounds. With a total of 2 patents to his name, Ohnuki's work has implications for industrial production processes.
Latest Patents
Ohnuki's latest patents focus on processes for the preparation of diphenylsulfone compounds. One of his inventions provides methods for producing highly pure 4,4'-dihydroxydiphenyl sulfone monoethers. This process includes several key steps: conducting pH adjustments multiple times during purification, removing excessive alkyl halide, using a solvent with minimal iron components, employing corrosion-resistant tanks, adding a chelating agent, and applying mechanical stirring for drying.
Career Highlights
Throughout his career, Yasuo Ohnuki has worked with prominent companies such as Nippon Soda Co., Ltd. and Ibarakikasei Chemicals Co. Ltd. His experience in these organizations has contributed to his expertise in chemical processes and innovations.
Collaborations
Ohnuki has collaborated with notable coworkers, including Kiyoshi Katsuura and Tomoya Hidaka. These partnerships have likely enriched his research and development efforts in the field of diphenylsulfone compounds.
Conclusion
Yasuo Ohnuki's contributions to the field of chemistry, particularly through his patents on diphenylsulfone compounds, highlight his innovative spirit and dedication to advancing industrial processes. His work continues to influence the production methods in the chemical industry.