Kokubunji, Japan

Sumio Izumi

This inventor holds 7 USPTO granted patents. Top assignee: Mitsui Minings & Melting Co., Ltd.. Active years: 1976-1979.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Sumio Izumi. Retrieved from https://idiyas.com/inventor/sumio-izumi

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile


% Patents Active = 100.0

Average Co-Inventor Count = 2.2

ph-index = 6

Forward Citations = 83(Granted Patents)


Location History:

  • Sayama, JA (1976)
  • Kobubunji, JA (1976)
  • Kokubunji, JA (1976 - 1977)
  • Sayama, JP (1978 - 1979)

Company Filing History:


Years Active: 1976-1979

Loading Chart...
7 patents (USPTO):Explore Patents

Title: The Innovative Contributions of Sumio Izumi

Introduction

Sumio Izumi is a notable inventor based in Kokubunji, Japan. He has made significant contributions to the field of plastic separation technology, holding a total of 7 patents. His work focuses on methods that enhance the efficiency of recycling processes, particularly in separating different types of plastics.

Latest Patents

Izumi's latest patents include innovative methods for separating mixtures of plastics. One of his notable inventions is a method for separating a mixture of plastics that includes polyethylene, polypropylene, and polystyrene. This method involves placing the mixture in a separation cell with an aqueous liquid medium containing a wetting agent. By introducing gas bubbles into the cell, the gas selectively adheres to the surface of the polypropylene and/or polyethylene, allowing for effective separation. Another patent describes a method for separating highly hydrophobic plastics from a mixture by agitating the aqueous medium, causing the more hydrophobic plastics to float to the surface for easy removal.

Career Highlights

Sumio Izumi is associated with Mitsui Mining & Smelting Co., Ltd., where he has been instrumental in developing advanced recycling technologies. His work has not only contributed to the company's innovation portfolio but has also had a positive impact on environmental sustainability.

Collaborations

Izumi has collaborated with notable colleagues such as Kozo Saitoh and Tatsuya Nagahama. Their combined expertise has fostered a productive environment for innovation and development in the field of plastic recycling.

Conclusion

Sumio Izumi's contributions to the field of plastic separation technology exemplify the importance of innovation in addressing environmental challenges. His patents reflect a commitment to improving recycling processes and promoting sustainability.

Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
Loading…