Location History:
- Tokyo, JP (2012)
- Hokkaido, JP (2015)
Company Filing History:
2 out of 342 
2 out of 28 Years Active: 2012-2015
Title: Innovations of Tatsumi Hosaka in Pulp and Paper Technology
Introduction
Tatsumi Hosaka is a notable inventor based in Hokkaido, Japan. He has made significant contributions to the field of pulp and paper technology, holding two patents that showcase his innovative approaches to improving processes in this industry.
Latest Patents
One of his latest patents is focused on processes for preparing pulp and paper. The purpose of this invention is to provide technology for regenerating high-quality pulp using compact equipment and less energy. In this method, pulp slurry containing 1.5 wt % or more of a solid component, including waste paper pulp, is separated into long and short fiber fractions using an outward type slit screen. The solid component ratio of these fractions ranges from 10:90 to 60:40, with a difference in Canadian Standard Freeness between them of 100 ml to 300 ml.
Another significant patent by Hosaka is a flotation apparatus designed to separate print ink from liquid raw materials. This apparatus includes a tank for receiving the raw material and introduces air to generate bubbles that adsorb the print ink, allowing for effective separation. The flotation apparatus features a circulating device that raises and lowers the liquid raw material, an air supply tube for introducing air, and an agitating member that forms fine bubbles for optimal separation.
Career Highlights
Throughout his career, Tatsumi Hosaka has worked with prominent companies such as Nippon Paper Industries Co., Ltd. and Aikawa Iron Works Co., Ltd. His experience in these organizations has contributed to his expertise in pulp and paper technology.
Collaborations
Hosaka has collaborated with notable coworkers, including Shisei Goto and Takaharu Noda. These partnerships have likely enhanced his innovative capabilities and contributed to the development of his patents.
Conclusion
Tatsumi Hosaka's contributions to pulp and paper technology through his patents demonstrate his commitment to innovation in the field. His work continues to influence the industry, showcasing the importance of advancements in sustainable practices.