Kanagawa, Japan

Koichi Oyamada

This inventor holds 6 USPTO granted patents. Top assignee: Fuji Xerox Co., Ltd.. Active years: 1989-1993.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Koichi Oyamada. Retrieved from https://idiyas.com/inventor/koichi-oyamada

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 = 3.1

ph-index = 5

Forward Citations = 102(Granted Patents)


Company Filing History:


Years Active: 1989-1993

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6 patents (USPTO):Explore Patents

Title: The Innovations of Koichi Oyamada

Introduction

Koichi Oyamada is a notable inventor based in Kanagawa, Japan. He has made significant contributions to the field of electrophotography, holding a total of 6 patents. His work has been instrumental in advancing technologies related to toner formulations.

Latest Patents

Oyamada's latest patents include an innovative electrophotographic toner. This toner comprises a binder resin, a coloring material, and a polyalkylene, which has an average particle volume of 0.05 µm³ or more. The unique formulation allows the toner to exhibit broadened fixing latitude when fixed by heat roll fixing without the need for any offset inhibiting liquid. Another significant patent is for an electrophotographic red toner. This red color toner includes a binder resin and a colorant component that may consist of C.I. Pigment Red 48:1, along with a second red pigment or a yellow pigment. The colorant is preferably present in an amount between about 1% and about 20% by weight of the binder resin.

Career Highlights

Koichi Oyamada is currently employed at Fuji Xerox Co., Ltd., where he continues to innovate and develop new technologies in the field of electrophotography. His expertise and dedication have made him a valuable asset to the company.

Collaborations

Oyamada has collaborated with notable coworkers such as Masanori Ichimura and Toru Murakami. Their combined efforts have contributed to the advancement of technologies in their field.

Conclusion

Koichi Oyamada's contributions to electrophotography through his patents and collaborations highlight his importance as an inventor. His work continues to influence the industry and pave the way for future innovations.

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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