Etsuo Ohtake

Title: Etsuo Ohtake: Innovator in Cellulose Ester Technologies

Introduction

Etsuo Ohtake is a notable inventor based in Kanagawa, Japan. He has made significant contributions to the field of cellulose ester technologies, holding a total of 3 patents. His innovative work focuses on processes that enhance the production and application of cellulose-based materials.

Latest Patents

Ohtake's latest patents include a process for producing a thin resin film. This process involves casting a solution of cellulose ester in an organic solvent over a smooth glass plate and subsequently removing the solvent to form a thin film of uniform thickness. The thin film is then separated from the glass plate by immersing it in water, allowing for recovery and drying on a supporting mount. Another significant patent involves the creation of porous spherical cellulose acetate particles. These particles have an acetylation degree of 49 to 60%, a particle diameter ranging from 0.05 to 10 mm, and a collapsing strength of 9 kg or higher.

Career Highlights

Etsuo Ohtake is currently associated with Daicel Chemical Industries, Ltd., where he continues to innovate in the field of cellulose materials. His work has not only advanced the understanding of cellulose esters but has also paved the way for new applications in various industries.

Collaborations

Ohtake has collaborated with notable coworkers such as Akihiko Higuchi and Kazuhiro Yamazaki. Their combined expertise has contributed to the successful development of innovative cellulose-based technologies.

Conclusion

Etsuo Ohtake's contributions to cellulose ester technologies exemplify the spirit of innovation. His patents and ongoing work at Daicel Chemical Industries, Ltd. continue to influence the field significantly.