This inventor holds 10 USPTO granted patents and 4 published patent applications and 6 EPO patents. Top assignee: Toray Industries, Inc.. Active years: 2015-2026.
Company Filing History:
Years Active: 2015-2026
Title: Daijiro Tsukamoto: Innovator in Chemical Production
Introduction
Daijiro Tsukamoto is a prominent inventor based in Kamakura, Japan. He has made significant contributions to the field of chemical production, holding a total of 10 patents. His innovative methods have advanced the production processes of various chemical compounds.
Latest Patents
One of Tsukamoto's latest patents is a method for producing ε-caprolactam. This method involves two main steps: first, reacting 5-cyanovaleramide with hydrogen in an aqueous solvent in the presence of a hydrogenation catalyst to obtain a hydrogenation reaction mixture. The second step involves heating this mixture at a temperature between 180° C. and 300° C. to produce ε-caprolactam. Another notable patent is for a method of producing 3-hydroxyadipic acid-3,6-lactone. This method includes adding an acid to a 3-hydroxyadipic acid-containing aqueous solution and then extracting the 3-hydroxyadipic acid-3,6-lactone using an extraction solvent.
Career Highlights
Daijiro Tsukamoto is currently employed at Toray Industries, Inc., where he continues to innovate in the field of chemical production. His work has not only contributed to the company's success but has also had a broader impact on the industry.
Collaborations
Tsukamoto has collaborated with notable coworkers such as Katsushige Yamada and Kenji Kawamura. These partnerships have fostered a creative environment that encourages the development of new ideas and technologies.
Conclusion
Daijiro Tsukamoto is a distinguished inventor whose work in chemical production has led to significant advancements in the field. His innovative methods and collaborations continue to shape the future of chemical manufacturing.