Hachioji, Japan

Toshio Hagiwara

This inventor holds 1 USPTO granted patent. Top assignee: Konica Corporation. Active years: 1994.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Toshio Hagiwara. Retrieved from https://idiyas.com/inventor/toshio-hagiwara-czvgp3ql

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 = 3.0

ph-index = 1

Forward Citations = 15(Granted Patents)


Company Filing History:


Years Active: 1994

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1 patent (USPTO):Explore Patents

Title: Toshio Hagiwara: Inventor in Photoreceptor Developing Technology.

Introduction

Toshio Hagiwara is an inventor associated with Hachioji, Japan, and Konica Corporation. His recorded patent concerns a developing unit designed for use with a photoreceptor to form a toner image.

Latest Patents

Hagiwara’s listed patent is “Developing unit and drive transmission attachment.” It describes a developing apparatus with a toner-storage housing, an agitator shaft shorter than the housing’s interior dimension, a gear mechanism that transmits driving force to the shaft, and a coupling positioned inside the housing to connect the gear mechanism and shaft. The available information lists 1 patent for Hagiwara.

Career Highlights

Hagiwara’s recorded invention addresses the drive transmission and internal arrangement of components in a developing unit. The patent is associated with Konica Corporation.

Collaborations

Mitsuyoshi Nagashita and Kiyoshi Ueda are identified as Hagiwara’s coworkers.

Conclusion

Toshio Hagiwara’s listed patent reflects his contribution to photoreceptor developing technology through a design that combines toner storage, agitation, and drive transmission within a developing apparatus.

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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