This inventor holds 2 USPTO granted patents and 1 EPO patent. Top assignee: Nippon Soda Co., Ltd.. Active years: 2003-2007.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Koriyama, JP (2003)
- Fukushima, JP (2007)
Company Filing History:
Years Active: 2003-2007
Title: Masayuki Hanzawa: Innovator in Diphenyl Sulfone Production
Introduction
Masayuki Hanzawa is a notable inventor based in Fukushima, Japan. He has made significant contributions to the field of chemical engineering, particularly in the production of diphenyl sulfone compounds. With a total of 2 patents to his name, Hanzawa's work is characterized by its focus on productivity, economical efficiency, and safety.
Latest Patents
Hanzawa's latest patents include an industrial process for the production of diphenyl sulfone compounds. One of his processes involves producing 4-isopropoxy-4'-hydroxydiphenyl sulfone, which serves as a developer for leuco dyes used in thermosensible papers. This innovative process enhances productivity and economical efficiency while ensuring safety. It allows for the production of compounds from readily available raw materials. The process improves upon prior art by utilizing isopropyl iodide, which is more reactive than isopropyl bromide, thereby shortening production time. Another patent focuses on a similar industrial process for producing compounds of general formula (II), also aimed at leuco dye development. This method incorporates an iodine recovery step, allowing for the complete recovery and reuse of iodine from manufacturing wastewater, further enhancing productivity and safety.
Career Highlights
Hanzawa is currently employed at Nippon Soda Co., Ltd., where he continues to innovate in the field of chemical production. His work has garnered attention for its practical applications and contributions to the industry.
Collaborations
Some of Hanzawa's notable coworkers include Syuichiro Sanpei and Yasuyuki Suzuki. Their collaborative efforts have contributed to the advancement of chemical processes within their organization.
Conclusion
Masayuki Hanzawa's innovative approaches to diphenyl sulfone production exemplify the importance of efficiency and safety in chemical engineering. His patents reflect a commitment to advancing industrial processes that benefit both the industry and the environment.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile