Sagamihara, Japan

Koubun Sakagami

This inventor holds 1 USPTO granted patent. Top assignee: Victor Company of Japan, Limited. Active years: 1990.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Koubun Sakagami. Retrieved from https://idiyas.com/inventor/koubun-sakagami-rmw86xpf

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

Calculating rank

% Patents Active = 100.0

Average Co-Inventor Count = 6.0

ph-index = 1

Forward Citations = 7(Granted Patents)


Company Filing History:


Years Active: 1990

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1 patent (USPTO):Explore Patents

Title: Koubun Sakagami: Innovator in Electrophotography

Introduction

Koubun Sakagami is a notable inventor based in Sagamihara, Japan, recognized for his contributions to the field of electrophotography. His innovative work has led to the development of essential technologies that are used in laser printers, printing machines, and copying machines, significantly enhancing the efficiency of these devices.

Latest Patents

Sakagami holds a patent for an electrophotography system that comprises a rotatable drum equipped with a photosensitive member capable of transitioning between two absorption spectrum states. This transition is achieved by illuminating the member with light that meets specific intensity and wavelength criteria. The optical system integrated into the design includes a light-emitting device responsible for creating electrostatic latent images on the photosensitive member, employing both direct and reflected light from the original picture. This novel system allows for various printing modes, enabling adaptability based on the specific needs of users.

Career Highlights

Throughout his career, Koubun Sakagami has made significant strides in the development of electrophotographic technologies. He has continually worked to refine these processes and improve the quality and efficiency of printed outputs. His expertise in this area has established him as a key contributor within his field.

Collaborations

During his time at Victor Company of Japan, Limited, Koubun has collaborated with esteemed colleagues, including Itsuo Takanashi and Toshikatsu Ichitou. These collaborations have further enriched his work, allowing for the shared exchange of ideas and driving innovation within the company.

Conclusion

Koubun Sakagami's work in electrophotography exemplifies the impact of innovation in the printing industry. With his patented electrophotography system, he has contributed to advancements that continue to shape the future of printing technology. His collaborations and career at Victor Company of Japan, Limited, highlight the significance of teamwork in fostering innovation, paving the way for ongoing developments in the field.

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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