Machida, Japan

Shotaro Watanabe

This inventor holds 4 USPTO granted patents. Top assignee: Konishiroku Photo Industry Co., Ltd.. Active years: 1979-1985.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Shotaro Watanabe. Retrieved from https://idiyas.com/inventor/shotaro-watanabe-jcg3u7hd

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 = 4.1

ph-index = 3

Forward Citations = 24(Granted Patents)


Location History:

  • Hino, JP (1979)
  • Machida, JP (1980 - 1981)
  • Tokyo, JP (1985)

Company Filing History:


Years Active: 1979-1985

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4 patents (USPTO):Explore Patents

Title: The Innovations of Shotaro Watanabe

Introduction

Shotaro Watanabe is a notable inventor based in Machida, Japan. He has made significant contributions to the field of electrophotography, holding a total of 4 patents. His work focuses on developing materials and processes that enhance the efficiency and effectiveness of electrophotographic technologies.

Latest Patents

Watanabe's latest patents include innovative developments in materials for electrophotography. One of his key inventions is a process for preparing an iron powder developer carrier for electrophotography. This carrier features an outer surface coated with iron oxide, which has a particle size ranging from 50 to 200 micrometers, an apparent density of 1.5 to 2.5 g/cm³, and a specific surface area of 0.01 to 0.3 m²/g. Another significant patent involves a method for manufacturing iron powder developing carriers, which includes steps such as primary calcination in an inert gas atmosphere, pulverization, and oxidizing calcination treatment. These innovations are crucial for developing electrostatic latent images and forming visible images using the developed carriers.

Career Highlights

Watanabe is currently employed at Konishiroku Photo Industry Co., Ltd., where he continues to push the boundaries of technology in his field. His expertise in electrophotography has positioned him as a key player in the industry, contributing to advancements that benefit various applications.

Collaborations

Throughout his career, Watanabe has collaborated with talented individuals such as Katsutoshi Tozawa and Shigeru Uetake. These partnerships have fostered a creative environment that encourages innovation and the sharing of ideas.

Conclusion

Shotaro Watanabe's contributions to electrophotography through his patents and collaborative efforts highlight his importance as an inventor in the field. His work continues to influence advancements in technology, making a lasting impact on the industry.

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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