Osaka, Japan

Nobuhiro Shibuta

This inventor holds 17 USPTO granted patents, primarily in Oxide Superconductors. Top assignees: Sumitomo Electric Industries, Limited, The Tokyo Electric Power Company, Incorporated. Active years: 1989-2003.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Nobuhiro Shibuta. Retrieved from https://idiyas.com/inventor/nobuhiro-shibuta

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 = 3.6

ph-index = 6

Forward Citations = 111(Granted Patents)


Company Filing History:


Years Active: 1989-2003

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Areas of Expertise:
Bismuth Oxide
Superconducting Wire
High Temperature
Cable Conductor
Junction Method
Heat Treatment
Superconducting Coil
Electromagnets
17 patents (USPTO):Explore Patents

Title: Nobuhiro Shibuta: Innovator in Superconducting Wire Technology

Introduction

Nobuhiro Shibuta is a prominent inventor based in Osaka, Japan. He has made significant contributions to the field of superconducting wire technology, holding a total of 17 patents. His work focuses on methods for preparing bismuth oxide superconducting wires, which are crucial for various advanced applications.

Latest Patents

Shibuta's latest patents include a method of preparing bismuth oxide superconducting wire. This innovative process involves creating a powder with a mean particle diameter of not more than 1 µm, which contains a mixture of superconducting and non-superconducting phases. The powder undergoes heat treatment and deformation processing to produce a round wire, which is then transformed into a tape or flat type wire. The wire is heat treated to facilitate phase transformation, resulting in a bismuth oxide superconducting wire with a high critical current density. Another notable patent is a method for preparing and handling oxide superconducting wire, which ensures that the critical current density remains stable even when the wire is bent.

Career Highlights

Throughout his career, Nobuhiro Shibuta has worked with esteemed companies such as Sumitomo Electric Industries, Limited and The Tokyo Electric Power Company, Incorporated. His experience in these organizations has allowed him to refine his expertise in superconducting technologies and contribute to groundbreaking advancements in the field.

Collaborations

Shibuta has collaborated with notable colleagues, including Kenichi Sato and Hidehito Mukai. These partnerships have fostered innovation and have been instrumental in the development of new technologies in superconductivity.

Conclusion

Nobuhiro Shibuta's contributions to superconducting wire technology are significant and impactful. His innovative methods and collaborations continue to advance the field, making him a key figure in the world of superconductivity.

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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