Yokohama, Japan

Toshio Nakahara

This inventor holds 7 USPTO granted patents. Top assignee: Ricoh Company, Ltd.. Active years: 1989-1999.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Toshio Nakahara. Retrieved from https://idiyas.com/inventor/toshio-nakahara

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 = 3.0

ph-index = 4

Forward Citations = 59(Granted Patents)


Company Filing History:


Years Active: 1989-1999

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7 patents (USPTO):Explore Patents

Title: The Innovations of Toshio Nakahara

Introduction

Toshio Nakahara is a prominent inventor based in Yokohama, Japan. He has made significant contributions to the field of electrophotography, holding a total of 7 patents. His work focuses on enhancing the efficiency and environmental sustainability of image forming apparatuses.

Latest Patents

One of Nakahara's latest patents is for an "Image forming apparatus and charging device thereof." This invention utilizes a charge roller to uniformly charge the surface of a photoconductive element during image formation. By applying a DC voltage, the charging efficiency is enhanced, leading to a uniform charge distribution. This innovation not only reduces the cost of the apparatus and power source but also minimizes ozone generation, thereby preventing deterioration of the charging member and photoconductive element while eliminating environmental pollution. Another notable patent is for a "Charge roller for an image forming apparatus." This charge roller features an elastic layer made of a medium electric resistance substance without conductive particles, and a surface layer made of a non-adhering substance with superior non-adhering properties.

Career Highlights

Toshio Nakahara is currently employed at Ricoh Company, Ltd., where he continues to develop innovative technologies in the imaging sector. His work has significantly impacted the efficiency and sustainability of imaging solutions.

Collaborations

Nakahara has collaborated with notable colleagues such as Junji Kurokawa and Kazuo Nojima, contributing to advancements in their field.

Conclusion

Toshio Nakahara's contributions to electrophotography and image forming technologies demonstrate his commitment to innovation and environmental sustainability. His patents reflect a deep understanding of the technical challenges in the industry and a dedication to finding effective solutions.

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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