Yokohama, Japan

Shigefumi Kuroyama

This inventor holds 1 USPTO granted patent. Top assignee: Showa Denko Kabushiki Kaisha. Active years: 1989.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Shigefumi Kuroyama. Retrieved from https://idiyas.com/inventor/shigefumi-kuroyama

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 = 2.0

ph-index = 1

Forward Citations = 3(Granted Patents)


Company Filing History:


Years Active: 1989

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1 patent (USPTO):Explore Patents

Title: Shigefumi Kuroyama: Innovator in Magnetic Recording Media

Introduction

Shigefumi Kuroyama is a notable inventor based in Yokohama, Japan. He has made significant contributions to the field of magnetic recording media. His innovative work focuses on enhancing the properties of magnetic particles used in various applications.

Latest Patents

Kuroyama holds a patent for a method of preparing magnetic particles for magnetic-recording media. This patent, titled "Magnetic particles of modified .gamma.-ferric oxide particles for magnetic recording media," describes a process that results in particles with excellent electrical conductivity, saturation magnetization, and print-through. The method involves modifying .gamma.-ferric oxide particles with cobalt and ferrous iron in the presence of an alkaline earth metal salt within an alkaline solution.

Career Highlights

Shigefumi Kuroyama is associated with Showa Denko Kabushiki Kaisha, a prominent company in the chemical industry. His work has contributed to advancements in magnetic materials, which are crucial for data storage technologies.

Collaborations

Kuroyama has collaborated with Kenichi Okazaki, further enhancing the research and development efforts in their field.

Conclusion

Shigefumi Kuroyama's innovative approach to magnetic particles has paved the way for improvements in magnetic recording media. His contributions continue to influence the industry and drive technological advancements.

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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