Hachioji, Japan

Kohji Ishii

This inventor holds 4 USPTO granted patents. Top assignee: Konica Corporation. Active years: 1990-1991.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kohji Ishii. Retrieved from https://idiyas.com/inventor/kohji-ishii

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 = 3.2

ph-index = 4

Forward Citations = 68(Granted Patents)


Company Filing History:


Years Active: 1990-1991

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4 patents (USPTO):Explore Patents

Title: Kohji Ishii: Innovator in Toner Technology

Introduction

Kohji Ishii is a notable inventor based in Hachioji, Japan. He has made significant contributions to the field of toner technology, holding a total of 4 patents. His work focuses on improving the efficiency and functionality of toner cartridges and density control methods.

Latest Patents

Ishii's latest patents include a toner density control method and a toner cartridge for a copying apparatus. The toner density control method involves calculating a correction coefficient based on changes in toner density when a developer of standard density is stirred. This method aims to maintain stable toner density during operation. The toner cartridge patent describes a design that includes a cylindrical body with separate rooms for supplying toner and collecting waste toner. This innovative design enhances the efficiency of photo-copy machines by ensuring a seamless supply and collection process.

Career Highlights

Kohji Ishii is currently employed at Konica Corporation, where he continues to develop and refine toner technologies. His work has been instrumental in advancing the capabilities of copying machines and improving user experience.

Collaborations

Ishii has collaborated with notable colleagues such as Atsuo Ohmura and Jun-ichi Koiso, contributing to various projects that enhance toner technology.

Conclusion

Kohji Ishii's contributions to toner technology through his innovative patents and collaborations have made a significant impact in the field. His work continues to influence the efficiency of copying machines and the overall user experience.

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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