Hiroshi Onishi

Title: Inventor Hiroshi Onishi: Innovating Cellulose Polymer Production

Introduction

Hiroshi Onishi is a prominent inventor based in Kanagawa, Japan, recognized for his significant contributions to cellulose polymer technology. With three patents to his name, Onishi has made remarkable advancements in methods for producing cellulose polymers, furthering the field of materials science.

Latest Patents

Onishi's latest innovations include a groundbreaking method of producing cellulose polymer solution. This method involves dissolving cellulose polymer raw material in a chlorine-free organic solvent system under near-critical or supercritical conditions, at high temperature and pressure. By removing the solvent from the resulting cellulose polymer solution, he has also developed a process for producing cellulose polymer powders.

Another significant patent focuses on a novel production method of cellulose polymer powder. This involves dissolving a cellulose polymer by utilizing organic solvents, primarily ester-based (with 2 to 8 carbon atoms), ketone-based (4 to 10 carbon atoms), or alcohol-based solvents (3 to 6 carbon atoms), in conjunction with carbon dioxide. After the dissolution, both the carbon dioxide and the organic solvent are removed to yield the final product. Additionally, Onishi's work includes a method for producing an organic solvent solution of cellulose polymer.

Career Highlights

Hiroshi Onishi is affiliated with Fuji Photo Film Company, Limited, where he has played a vital role in research and development. His work primarily focuses on innovating processes that enhance the functionality and application of cellulose polymers in various industries.

Collaborations

Throughout his career, Onishi has collaborated with talented coworkers, including Tadahisa Sato and Katsuyoshi Yamakawa. Together, they have contributed to the advancement of cellulose polymer technologies, demonstrating the importance of teamwork in innovative research.

Conclusion

Hiroshi Onishi's inventions showcase his commitment to enhancing cellulose polymer production methods. With several patents in place, he continues to inspire innovation within the materials science field and contributes significantly to the future of usable cellulose products. His collaborative efforts with colleagues further emphasize the importance of cooperation in driving technological advancements.