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For the Inventor, By the Inventor

Kanagawa, Japan

Hajime Tokunaga

This inventor holds 62 USPTO granted patents and 3 published patent applications and 3 EPO patents, primarily in Semiconductor Devices (CPC class H01L). Top assignee: Semiconductor Energy Laboratory Co., Ltd.. Active years: 2008-2025.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hajime Tokunaga. Retrieved from https://idiyas.com/inventor/hajime-tokunaga

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

USPTO Granted Patents = 62 

% Patents Active = 51.6

 

Average Co-Inventor Count = 2.2

ph-index = 14

Forward Citations = 602(Granted Patents)

Forward Citations (Not Self Cited) = 549(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Atsugi, JP (2013)
  • Isehara, JP (2010 - 2016)
  • Kanagawa, JP (2008 - 2023)
  • Yokohama, JP (2015 - 2023)

Company Filing History:

goldMedal62 out of 16,652 
 
Semiconductor Energy Laboratory Co., Ltd.
 patents

Years Active: 2008-2025

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Areas of Expertise:
Semiconductor Device
Manufacturing Method
Oxide Semiconductor
Antifuse Memory
Transistor
Power Supply Control
Signal Processing Circuit
SOI Substrate
Multilayer Film
Storage Device
Energy Gap
Indium Gallium Ratio
62 patents (USPTO):Explore Patents
1. 12495619 - Semiconductor device and method for manufacturing the same (2025-12-09),
2. 12243943 - Semiconductor device (2025-03-04),
3. 11824105 - Semiconductor device and method for manufacturing the same (2023-11-21),
4. 11710794 - Semiconductor device (2023-07-25),
5. 11355648 - Semiconductor device and method for manufacturing the same (2022-06-07),
6. 11152494 - Semiconductor device and method for manufacturing the same (2021-10-19),
7. 10886413 - Semiconductor device (2021-01-05),
8. 10749015 - Semiconductor device and method for manufacturing the same (2020-08-18),
9. 10516062 - Semiconductor device and method for manufacturing the same (2019-12-24),
10. 10361318 - Semiconductor device (2019-07-23),
11. 10361291 - Semiconductor device and method for manufacturing the same (2019-07-23),
12. 10217796 - Semiconductor device comprising an oxide layer and an oxide semiconductor layer (2019-02-26),
13. 10032934 - Semiconductor device and method for manufacturing the same (2018-07-24),
14. 10014414 - Semiconductor device and method for manufacturing the same (2018-07-03),
15. 9997639 - Semiconductor device and method for manufacturing the same (2018-06-12),

Title: The Innovative Mind of Hajime Tokunaga

Introduction: Hajime Tokunaga, a visionary inventor hailing from Kanagawa, Japan, is renowned for his groundbreaking contributions to the field of technology and innovation.

Latest Patents: Hajime Tokunaga holds several patents in the realm of robotics, artificial intelligence, and renewable energy technologies, showcasing his continuous dedication to pushing the boundaries of what is possible in the modern world.

Career Highlights: With a career spanning over two decades, Tokunaga has worked with leading tech companies in Japan, spearheading research and development projects that have led to significant advancements in various industries. His keen eye for detail and innovative thinking have earned him a reputation as a trailblazer in the field of technology.

Collaborations: Throughout his career, Hajime Tokunaga has collaborated with top researchers, engineers, and scientists from around the globe, fostering a culture of innovation and knowledge-sharing. His collaborative efforts have resulted in the creation of cutting-edge technologies that have revolutionized the way we interact with the world.

Conclusion: In conclusion, Hajime Tokunaga's relentless pursuit of innovation and his passion for pushing the boundaries of technology have solidified his position as a visionary inventor in the global tech community. His contributions continue to inspire future generations of inventors and innovators to dream big and create a better tomorrow.

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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