Machida, Japan

Tsutomu Fujioka

This inventor holds 1 USPTO granted patent. Top assignee: Kabushiki Kaisha Toshiba. Active years: 1991.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Tsutomu Fujioka. Retrieved from https://idiyas.com/inventor/tsutomu-fujioka

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 = 9.0

ph-index = 1

Forward Citations = 17(Granted Patents)


Company Filing History:


Years Active: 1991

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1 patent (USPTO):Explore Patents

Title: Innovations by Tsutomu Fujioka: Advancements in Superconducting Technology

Introduction: Tsutomu Fujioka, an esteemed inventor based in Machida, Japan, has made significant contributions to the field of superconducting technology. With a focus on enhancing power systems, he has developed a remarkable invention that addresses critical issues in electrical engineering.

Latest Patents: Fujioka holds a unique patent for a Superconducting Current Limiting Apparatus. This invention consists of a first container that houses a superconducting current limiting element, complemented by a refrigerant that cools the element. The apparatus features a second container designed to insulate the first container from heat, and a conductor that connects the superconducting element to an external power supply. It is particularly advantageous for limiting short-circuit currents, making it a pivotal technology in short-circuit controlling superconducting systems.

Career Highlights: Tsutomu Fujioka is affiliated with Toshiba Corporation, a global leader in technology and innovation. His work at Toshiba exemplifies his commitment to advancing superconducting technology and its applications in modern power systems.

Collaborations: Throughout his career, Fujioka has collaborated with talented colleagues, including Masaru Okamoto and Hitoshi Mizoguchi. Their combined expertise has fostered advancements in the development of superconducting solutions that address the demands of contemporary electrical infrastructure.

Conclusion: Tsutomu Fujioka's innovations, particularly in the realm of superconducting apparatuses, reflect his dedication to enhancing technological capabilities in electrical engineering. His patent not only represents a significant leap in technology but also underlines the importance of collaboration among inventors in achieving transformative 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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