This inventor holds 41 USPTO granted patents, primarily in Fluoropolymer Production. Top assignees: Asahi Glass Company, Limited, Osi Specialties, Inc., Seimi Chemical Co., Ltd.. Active years: 1976-2006.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Yokohama, J (1976)
- Yokohama, JA (1978)
- Tokyo, JP (1983 - 1991)
- Yokohama, JP (1979 - 1999)
- Chigasaki, JP (1999)
- Fujisawa, JP (1991 - 2001)
- Kanagawa, JP (2001 - 2006)
Company Filing History:
36 out of 2,560 
3 out of 58 
3 out of 38 Years Active: 1976-2006
Areas of Expertise:
Title: Seisaku Kumai: Innovator in Fluoropolymer Recovery
Introduction
Seisaku Kumai is a prominent inventor based in Yokohama, Japan, known for his significant contributions to the field of polymer science. With a remarkable portfolio of 40 patents, Kumai has been at the forefront of innovations specifically focused on the recovery of fluoropolymers, showcasing his expertise and dedication to advancing chemical engineering.
Latest Patents
Kumai's latest patents detail innovative processes for recovering fluoropolymers. One of his notable inventions involves a process that utilizes an ion exchange membrane comprising a C-polymer and an S-polymer. This method incorporates a multi-step procedure where the membrane is subjected to different solvents, enabling the efficient separation and recovery of both polymers. Another significant patent outlines a process that includes the esterification of the C-polymer in a solution, facilitating the fractionation of the precipitate alongside the recovery of the S-polymer. These processes not only enhance the efficiency of fluoropolymer recovery but also provide sustainable methods that could impact industrial applications.
Career Highlights
Throughout his career, Seisaku Kumai has made substantial contributions while working for notable companies such as Asahi Glass Company, Limited, and Seimi Chemical Co., Ltd. His innovations have not only propelled the companies forward but have also enriched the field of polymer research, making him a highly respected figure in the industry.
Collaborations
Kumai has collaborated with talented individuals such as Yutaka Furukawa and Kazuya Oharu. These partnerships have allowed for the sharing of knowledge and expertise, further enhancing the effectiveness and applicability of their joint research efforts in polymer recovery technologies.
Conclusion
In conclusion, Seisaku Kumai's extensive patent portfolio and his dedication to innovation in fluoropolymer recovery highlight his status as a leading inventor in the chemical engineering field. His work not only emphasizes the importance of sustainable practices in polymer applications but also sets a benchmark for future innovations in this domain. With his collaborative efforts and industry contributions, Kumai continues to inspire the next generation of inventors and researchers.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile