This inventor holds 4 USPTO granted patents. Top assignee: Daicel Chemical Industries, Ltd.. Active years: 1992-2003.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Hyogo, JP (1992)
- Himeji, JP (2002 - 2003)
Company Filing History:
Years Active: 1992-2003
Title: Tokuji Tanaka: Innovator in Acetylated Pyroxylin Technology
Introduction
Tokuji Tanaka is a notable inventor based in Himeji, Japan. He has made significant contributions to the field of chemical engineering, particularly in the development of acetylated pyroxylin. With a total of 4 patents to his name, Tanaka's work has advanced the understanding and application of this important material.
Latest Patents
Tanaka's latest patents focus on the acetylation process of pyroxylin. The starting pyroxylin is subjected to an acetylation reaction while it is dispersed in a medium such as toluene and maintained in a solid phase state. This innovative method allows for the immediate recovery of an extra portion of anhydrous acetic acid that does not participate in the reaction. By eliminating the precipitation process required in prior art solutions, Tanaka's approach addresses the unstable quality factors associated with variations in product particle size. Furthermore, the washing process for the post-reaction crude acetylated pyroxylin includes a high-temperature washing step between 60°C and 105°C, along with the use of a stabilizer-containing washing agent. This results in acetylated pyroxylin that exhibits improved heat resistance and stability.
Career Highlights
Tanaka is currently associated with Daicel Chemical Industries, Ltd., where he continues to innovate in the field of chemical processes. His work has not only contributed to the company's portfolio but has also set new standards in the industry.
Collaborations
Throughout his career, Tanaka has collaborated with esteemed colleagues such as Kazuhiro Nishioka and Etsuji Akimoto. These partnerships have fostered a collaborative environment that encourages innovation and the sharing of ideas.
Conclusion
Tokuji Tanaka's contributions to the field of acetylated pyroxylin technology highlight his role as a leading inventor in chemical engineering. His innovative approaches and collaborative efforts continue to influence the industry positively.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile