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For the Inventor, By the Inventor

Hitachi, Japan

Akira Nagai

This inventor holds 96 USPTO granted patents and 7 published patent applications and 6 EPO patents, primarily in Semiconductor Adhesives (CPC class H01L2-348). Top assignees: Hitachi, Ltd., Hitachi Chemical Company, Ltd., Renesas Technology Corp.. Active years: 1986-2025.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Akira Nagai. Retrieved from https://idiyas.com/inventor/akira-nagai

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

USPTO Granted Patents = 96 

% Patents Active = 70.8

 

Average Co-Inventor Count = 5.2

ph-index = 20

Forward Citations = 1,007(Granted Patents)

Forward Citations (Not Self Cited) = 979(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Hitachiota, JP (1998)
  • Ibaraki, JP (1995 - 2008)
  • Sagamihara, JP (2015)
  • Tsukuba, JP (2001 - 2017)
  • Hitachi, JP (1986 - 2019)
  • Musashino, JP (2019)
  • Tokyo, JP (1987 - 2024)

Company Filing History:

goldMedal43 out of 42,731 
 
Hitachi, Ltd.
 patents
silverMedal26 out of 1,641 
 
Hitachi Chemical Company, Ltd.
 patents
bronzeMedal8 out of 3,781 
 
Renesas Technology Corp.
 patents
4. 7 out of 5,300 
 
Nippon Telegraph and Telephone Corporation
 patents
5. 4 out of 139 
 
Showa Denko Materials Co., Ltd.
 patents
6. 2 out of 836 
 
Hitachi Cable, Inc.
 patents
7. 2 out of 2,423 
 
Mitsubishi Chemical Corporation
 patents
8. 2 out of 2,679 
 
Pioneer Corporation
 patents
9. 2 out of 6,021 
 
Rohm Co., Ltd.
 patents
10. 1 out of 8 
 
Akita Electronics Systems Co., Ltd.
 patents
11. 1 out of 1,010 
 
Central Glass Company, Limited
 patents
12. 1 out of 336 
 
Hitachi Ulsi Systems Co., Ltd.
 patents
13. 1 out of 339 
 
Kokusai Denshin Denwa Kabushiki Kaisha
 patents
14. 1 out of 2 
 
Koyo Giken Inc.
 patents
15. 1 out of 870 
 
Kyoto University
 patents
16. 1 out of 4 
 
Ntt Innovation Institute, Inc.
 patents
17. 1 out of 401 
 
Resonac Corporation
 patents
18. 1 out of 74 
 
Toyohashi University of Technology
 patents
19. 6 out of 834,513 
Other
 patents
where one patent can have more than one assignee

Years Active: 1986-2025

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Areas of Expertise:
Authentication Control
Semiconductor Device
Key Exchange System
Resin Composition
Adhesive Manufacturing
Heat Storage Material
Optical Semiconductor
Fiber-Reinforced Composite
96 patents (USPTO):Explore Patents
1. 12375303 - Authentication-permission system, information processing apparatus, equipment, authentication-permission method and program (2025-07-29),
2. 12021974 - Terminal, server, method and program (2024-06-25),
3. 11965048 - Acrylic resin, producing method thereof, resin composition set, heat storage material, and article (2024-04-23),
4. 11909867 - Key exchange system, method and program for generating a shared key for secure communication (2024-02-20),
5. 11902428 - Key exchange system, communication apparatus, key exchange method and program (2024-02-13),
6. 11791993 - Shared key system, information processing apparatus, equipment, shared key method and program (2023-10-17),
7. 11608455 - Adhesive for semiconductor device, and high productivity method for manufacturing said device (2023-03-21),
8. 11535782 - Resin member and sheet using same, and heat storage material and heat control sheet using same (2022-12-27),
9. 11441022 - Resin member and sheet using same, method for producing resin member, and heat storage material and heat control sheet using same (2022-09-13),
10. 11352466 - Resin composition, heat storage material, and commodity (2022-06-07),
11. 10979411 - Authentication control system, server apparatus, client apparatus, authentication control method, authentication method, and program (2021-04-13),
12. 10734350 - Method for manufacturing semiconductor device (2020-08-04),
13. 10669454 - Method for manufacturing semiconductor device including heating and pressuring a laminate having an adhesive layer (2020-06-02),
14. 10419213 - Key exchange method, key exchange system, key device, terminal device, and program (2019-09-17),
15. 10381533 - Optical semiconductor element mounting substrate and optical semiconductor device using thermosetting resin composition for light reflection (2019-08-13),

Title: Akira Nagai: Pioneering Visionary in Technology Innovation

Introduction:

Akira Nagai, a visionary inventor hailing from Hitachi, Japan, embraces a deep-rooted passion for innovation and a relentless pursuit of excellence. Her remarkable contributions in the world of technology have not only solidified her reputation but continue to inspire future generations of inventors worldwide.

Latest Patents:

Among her impressive portfolio of 91 patents, Akira Nagai's latest patents include groundbreaking inventions such as the Shared Key System and the Adhesive for Semiconductor Device. The Shared Key System is a key sharing system enabling encrypted communication between devices through an authenticated key sharing protocol. On the other hand, the Adhesive for Semiconductor Device revolutionizes the manufacturing process by ensuring high productivity through effective press-bonding techniques.

Career Highlights:

Akira Nagai has made significant strides in her career, showcasing her expertise while working with esteemed companies such as Hitachi, Ltd. and Hitachi Chemical Company, Ltd. Her innovative solutions and forward-thinking approach have consistently pushed the boundaries of technology and set new standards in the industry.

Collaborations:

Throughout her career, Akira Nagai has collaborated with esteemed professionals in the field, including Akio Takahashi and Masahiko Ogino. These collaborations have not only enriched her work but have also led to the development of groundbreaking technologies that have left a lasting impact on the industry.

Conclusion:

In conclusion, Akira Nagai's unwavering dedication to innovation, coupled with her inventive spirit, has undeniably cemented her status as a visionary inventor. Her pioneering work continues to shape the landscape of technology and inspires a new wave of inventors to push the boundaries of what is possible. Akira Nagai stands as a shining example of how passion, perseverance, and creativity can drive meaningful change in the world of innovation.

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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