Hitachi, Japan

Naofumi Tada

This inventor holds 15 USPTO granted patents, plus 1 CIPO patent, primarily in Superconducting Technology. Top assignees: Hitachi, Ltd., Hitachi Cable, Inc., Hitachi Engineerings and Services Co I, Ltd.. Active years: 1980-1997.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Naofumi Tada. Retrieved from https://idiyas.com/inventor/naofumi-tada

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 = 2.9

ph-index = 7

Forward Citations = 143(Granted Patents)


Location History:

  • Hitachi, JP (1980 - 1995)
  • Ube, JP (1997)

Company Filing History:


Years Active: 1980-1997

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Areas of Expertise:
Superconductor
Superconducting Coil
Magnetic Levitation
Cooling System
Stability
Aluminum-Stabilized
Intermetallic Compound
Forced Flow Cooling
Magnetic Device
Composite Superconductor
Superconducting Magnet
15 patents (USPTO):Explore Patents

Title: Naofumi Tada: Innovator in Superconducting Technology

Introduction

Naofumi Tada is a prominent inventor based in Hitachi, Japan. He has made significant contributions to the field of superconductors, holding a total of 15 patents. His work focuses on enhancing the performance of superconducting materials, particularly in high magnetic field applications.

Latest Patents

One of Tada's latest patents involves the development of a Nb₃Al group superconductor containing ultrafine Nb₂Al. The objective of this invention is to achieve a Nb₃Al group superconductor with a high critical current density across a wide range of magnetic fields, including levels as high as 20 T. The manufacturing methods outlined in his patent detail a process for creating Nb₃Al phase through a diffusion reaction of Nb₂Al and Nb phases. This process allows for the homogeneous dispersion of Nb₂Al phase within the Nb₃Al phase, serving as magnetic flux pinning centers for high magnetic fields. Tada's innovation enables the generation of high magnetic fields economically and compactly, making it particularly beneficial for nuclear fusion apparatuses of magnetic confinement types.

Career Highlights

Throughout his career, Naofumi Tada has worked with notable organizations, including Hitachi, Ltd. and the Japan Atomic Energy Research Institute. His expertise in superconducting materials has positioned him as a key figure in advancing technology in this field.

Collaborations

Tada has collaborated with esteemed colleagues such as Fumio Iida and Ryukichi Takahashi. Their joint efforts have contributed to the development of innovative superconducting technologies.

Conclusion

Naofumi Tada's contributions to superconducting technology have had a profound impact on the field. His innovative patents and collaborations continue to push the boundaries of what is possible in high magnetic field applications.

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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