Tokyo, Japan

Hisao Yamauchi

This inventor holds 14 USPTO granted patents. Top assignees: International Superconductivity Technology Center, Kyocera Corporation, Matsushita Electric Industrial Co., Ltd.. Active years: 1993-1998.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hisao Yamauchi. Retrieved from https://idiyas.com/inventor/hisao-yamauchi

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 = 4.5

ph-index = 2

Forward Citations = 15(Granted Patents)


Location History:

  • Tokyo, JP (1993 - 1998)
  • Yokohama, JP (1998)

Company Filing History:

goldMedal14 out of 128 
 
International Superconductivity Technology Center
 patents
silverMedal4 out of 6,924 
 
Kyocera Corporation
 patents
bronzeMedal4 out of 27,375 
 
Matsushita Electric Industrial Co., Ltd.
 patents
4. 3 out of 42,731 
 
Hitachi, Ltd.
 patents
5. 3 out of 8,782 
 
Sanyo Electric Co., Ltd.
 patents
6. 3 out of 10,641 
 
Sumitomo Electric Industries, Limited
 patents
7. 3 out of 2,643 
 
The Furukawa Electric Co., Ltd.
 patents
8. 3 out of 66 
 
Tohoku Electric Power Company, Inc.
 patents
9. 2 out of 68 
 
Mitsubishi Metal Corporation
 patents
10. 1 out of 112 
 
Central Research Institute of Electric Power Industry
 patents
11. 1 out of 19 
 
Hokkaido Electric Power Company, Inc.
 patents
12. 1 out of 1,101 
 
Kabushiki Kaisha Kobe Seiko Sho
 patents
13. 1 out of 53,262 
 
Kabushiki Kaisha Toshiba
 patents
14. 1 out of 115 
 
Matsushita Electrical Industrial Co., Ltd.
 patents
15. 1 out of 21,351 
 
Mitsubishi Denki Kabushiki Kaisha
 patents
16. 1 out of 1,555 
 
Mitsubishi Materials Corporation
 patents
17. 1 out of 177 
 
The Tokyo Electric Power Company, Incorporated
 patents
18. 1 out of 1 
 
Tohoku Electric Power
 patent
19. 1 out of 193 
 
Toshiba Corporation
 patents
20. 1 out of 1,432 
 
Ube Industries, Inc.
 patents
where one patent can have more than one assignee

Years Active: 1993-1998

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14 patents (USPTO):Explore Patents

Title: The Innovations of Hisao Yamauchi: A Pioneer in Superconductivity

Introduction: Hisao Yamauchi, based in Tokyo, Japan, is a distinguished inventor known for his groundbreaking contributions to the field of superconductivity. With 14 patents to his name, Yamauchi's work focuses on enhancing the functionalities and properties of oxide superconductive materials, paving the way for advancements in various technological applications.

Latest Patents: Hisao Yamauchi's recent patents showcase innovative methods of preparing oxide superconductive materials. His patent titled "Method of preparing oxide superconductive material" outlines a technique for creating a Tl–Ba–Ca–Cu–O superconductive material that achieves a stable superconducting state. Another notable patent, "Oxide superconductor and process of producing the same," discusses how modifications in hole density can significantly improve the critical current density of the oxide superconductor. By treating the material in an oxidizing gas atmosphere or through selective ion replacement, these advances contribute to the robustness of superconductors in magnetic fields, enhancing performance in practical applications.

Career Highlights: Yamauchi has built an impressive career within prestigious organizations, including the International Superconductivity Technology Center and Matsushita Electric Industrial Co., Ltd. His expertise in superconductive materials is recognized globally, driving research that fosters innovation in electronics and energy-efficient technologies.

Collaborations: Throughout his career, Hisao Yamauchi has collaborated with notable peers, including Shoji Tanaka and Seiji Adachi. Together, they have contributed to advancing the understanding and development of superconductive materials, combined leveraging their collective expertise to push the boundaries of what is possible in superconductor technology.

Conclusion: Hisao Yamauchi stands out as a significant figure in the realm of superconductivity, with a legacy marked by his numerous patents and innovative approaches to material science. His work not only elevates the field but also holds immense potential for future technological breakthroughs in electronics and beyond. As research continues to evolve, Yamauchi’s contributions will undoubtedly influence the landscape of superconductive technology for years to come.

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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