Location History:
- Fukushima, JP (1994)
- Iwaki, JP (2003 - 2006)
- Tokyo, JP (2013 - 2018)
Company Filing History:
6 out of 328 
3 out of 776 
2 out of 128 
Years Active: 1994-2018
Title: Tomoyoshi Koizumi: Innovator in Polyarylene Sulfide Production
Introduction
Tomoyoshi Koizumi is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of polymer production, particularly in the development of polyarylene sulfide (PAS). With a total of 11 patents to his name, Koizumi's work has had a substantial impact on the industry.
Latest Patents
Koizumi's latest patents include a method and apparatus for the production of polyarylene sulfide. The invention addresses the challenges of floating polymer formation and leakage during the washing step, ensuring steady production of high-quality polymer while reducing environmental impact. The production method involves several steps, including polymerization, separation, washing, and collection of the polymer. Additionally, he has developed a column-type solid-liquid countercurrent contact apparatus designed for washing solid particles like PAS, which enhances the efficiency of the manufacturing process.
Career Highlights
Throughout his career, Koizumi has worked with notable companies such as Kureha Corporation and Kureha Kagaku Kogyo Kabushiki Kaisha. His experience in these organizations has allowed him to refine his expertise in polymer production and innovation.
Collaborations
Koizumi has collaborated with esteemed colleagues, including Mitsuhiro Matsuzaki and Naoki Hayashi. These partnerships have contributed to the advancement of his research and the successful development of his patents.
Conclusion
Tomoyoshi Koizumi's innovative work in polyarylene sulfide production showcases his dedication to improving manufacturing processes and environmental sustainability. His contributions continue to influence the field of polymer science and technology.