Yamanashi, Japan

Seiichi Koizumi

This inventor holds 1 USPTO granted patent. Top assignees: Kabushiki Kaisha Toshiba, Shindengen Electric Manufacturing Company Limited, Yamanashi Electronics Co., Ltd.. Active years: 1993.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Seiichi Koizumi. Retrieved from https://idiyas.com/inventor/seiichi-koizumi-nn6wpvbb

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 = 13.0

ph-index = 1

Forward Citations = 10(Granted Patents)


Company Filing History:


Years Active: 1993

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1 patent (USPTO):Explore Patents

Title: Seiichi Koizumi: Innovator in Developing Apparatus Technology

Introduction

Seiichi Koizumi is a notable inventor based in Yamanashi, Japan. He has made significant contributions to the field of developing apparatus technology, particularly in the area of toner and carrier blending mechanisms. His innovative designs have paved the way for advancements in printing technology.

Latest Patents

Koizumi holds a patent for a developing apparatus that includes a hopper for storing toner and carrier. The design features a roller positioned in an opening of the hopper, along with a carrier stopper on the front wall of the hopper. This carrier stopper has an arced surface that opposes the upper portion of the roller, creating a blend layer volume in a first space. This design prevents carrier from scattering outside the blend layer volume while allowing the roller's rotation and magnetic force to blend the carrier and toner effectively. Additionally, a sub-hopper is formed to store toner to be provided to the blended layer.

Career Highlights

Throughout his career, Seiichi Koizumi has worked with prominent companies, including Kabushiki Kaisha Toshiba and Shindengen Electric Manufacturing Company Limited. His experience in these organizations has contributed to his expertise in developing innovative technologies.

Collaborations

Koizumi has collaborated with notable coworkers such as Masaaki Ishikawa and Michihisa Iguchi. Their combined efforts have further advanced the field of developing apparatus technology.

Conclusion

Seiichi Koizumi's contributions to the development of innovative apparatus technology have had a lasting impact on the industry. His patent and collaborations reflect his dedication to advancing printing technology.

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]
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