Hiroshima, Japan

Seishiro Hamada

This inventor holds 1 USPTO granted patent. Top assignee: Toyo Ink Manufacturing Company. Active years: 1991.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Seishiro Hamada. Retrieved from https://idiyas.com/inventor/seishiro-hamada

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 = 6(Granted Patents)


Company Filing History:


Years Active: 1991

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1 patent (USPTO):Explore Patents

Title: Seishiro Hamada: Inventor in Image Formation

Introduction

Seishiro Hamada is an inventor associated with Hiroshima, Japan, and Toyo Ink Manufacturing Company. His recorded patent concerns apparatus and methods for forming transfer images.

Latest Patents

Hamada is credited with 1 patent: “Apparatus for Image Formation and Method of Image Formation.” The invention describes an apparatus with a light source for exposure, an exposure cylinder, and a second cylinder that can contact the exposure cylinder. The exposure cylinder holds image-forming material, while the second cylinder receives and holds that material. The patent also describes using the apparatus to form a transfer image on an image receptor.

Career Highlights

The available information associates Hamada’s inventive work with Toyo Ink Manufacturing Company. His patent focuses on image formation and the transfer of image-forming material between cylinders.

Collaborations

Hamada’s listed coworkers include Toshio Shimada and Masaaki Matsuo. The available details do not specify their roles in the patented invention.

Conclusion

Seishiro Hamada’s recorded patent documents a cylinder-based approach to image formation and transfer, reflecting his association with Toyo Ink Manufacturing Company.

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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