Isao Onodera

Title: Isao Onodera: Innovator in Papermaking Technology

Introduction

Isao Onodera is a notable inventor based in Tokyo, Japan. He has made significant contributions to the field of papermaking technology, holding a total of 3 patents. His innovative approaches have enhanced the efficiency and effectiveness of processes in this industry.

Latest Patents

One of Onodera's latest patents is an "Apparatus for treating papermaking feedstock." This invention involves a papermaking raw material processor that reformulates pulp using cavitation. The apparatus includes a first pump that jets liquid and a second pump that jets a suspension containing pulp fibers into a processing unit. Inside this unit, cavitation is generated by a jet stream, which facilitates the removal of ink and other contaminants from the fibers through the collapse of cavitation bubbles. The liquid, after the reforming process, is returned to a second tank, except for a portion that is directed to downstream steps.

Another significant patent is the "Process for impregnating, refining, and bleaching wood chips having low bleachability to prepare mechanical pulps having high brightness." This process involves impregnating wood chips with a chemical liquor at a pH range of 7-12. The chemical liquor is drained from the impregnated chips, allowing for the removal of extractives that consume bleaching agents. This method improves the effectiveness of bleaching agents in subsequent steps, resulting in bleached mechanical pulp with a Hunter brightness of 45-65% after secondary refining.

Career Highlights

Onodera has worked with prominent companies in the industry, including Nippon Paper Industries Co., Ltd. and Toshiba Corporation. His experience in these organizations has contributed to his expertise and innovative capabilities in papermaking technology.

Collaborations

Throughout his career, Onodera has collaborated with notable professionals such as Keigo Watanabe and Hisayuki Hirai. These collaborations have likely enriched his work and led to advancements in his inventions.

Conclusion

Isao Onodera's contributions to papermaking technology through his patents and career achievements highlight his role as an influential inventor in the field. His innovative processes and apparatuses continue to impact the industry positively.