Isamu Akasaki

Nagoya, Japan

Isamu Akasaki

Nobel Prize

This inventor holds 45 USPTO granted patents and 3 published patent applications and 3 EPO patents, primarily in Nitride Semiconductor Devices. Top assignees: Toyoda Gosei Co., Ltd., Meijo University, Nagoya University. Active years: 1989-2025. Nobel Prize laureate.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Isamu Akasaki. Retrieved from https://idiyas.com/inventor/isamu-akasaki

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

Calculating rank
USPTO Granted Patents = 45 

% Patents Active = 88.9

 

Average Co-Inventor Count = 5.1

ph-index = 18

Forward Citations = 884(Granted Patents)


Location History:

  • Nagoya-shi, Aichi-ken JP (1996)
  • Aichi-ken, JP (1997 - 1999)
  • Nishi-ku, Nagoya-shi, Aichi-ken, JP (1999)
  • Nagoya-shi, Aichi-ken, JP (1994 - 2002)
  • Nishi-ku, Nagoya-shi, Aichi, JP (2005)
  • Nagoya-shi, Aichi, JP (2010)
  • Nagoya, JP (1989 - 2022)

Company Filing History:

goldMedal15 out of 3,086 
 
Toyoda Gosei Co., Ltd.
 patents
silverMedal13 out of 48 
 
Meijo University
 patents
bronzeMedal5 out of 371 
 
Nagoya University
 patents
4. 5 out of 256 
 
Research Development Corporation of Japan
 patents
5. 4 out of 2,861 
 
Pioneer Electronic Corporation
 patents
6. 3 out of 1,445 
 
Stanley Electric Co., Ltd
 patents
7. 2 out of 1,153 
 
Kabushiki Kaisha Toyota Chuo Kenkyusho
 patents
8. 1 out of 1 
 
Hiroshi Amano
 patent
9. 1 out of 1 
 
Isamu Akasaki
 patent
10. 1 out of 1,329 
 
Japan Science and Technology Agency
 patents
11. 1 out of 1 
 
Kazumasa Hiramatsu
 patent
12. 1 out of 2,310 
 
Koito Manufacturing Company, Ltd.
 patents
13. 1 out of 6,934 
 
Kyocera Corporation
 patents
14. 1 out of 71 
 
Kyoto Institute of Technology
 patents
15. 1 out of 133 
 
Lumileds Lighting U.s., LLC
 patents
16. 1 out of 1 
 
Melio University
 patent
17. 1 out of 66 
 
Pioneer Electric Corporation
 patents
18. 1 out of 44 
 
Research Development Corporation
 patents
19. 1 out of 1 
 
Uv Craftory Co., Ltd.
 patent
20. 17 out of 834,570 
Other
 patents
where one patent can have more than one assignee

Years Active: 1989-2025

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Areas of Expertise:
Nitride Semiconductor
Light-Emitting Device
Gallium Nitride
Semiconductor Fabrication
Laser Diodes
Multilayer Film
Vertical Cavity
Optical Sensor
Luminous Element
Group III Nitride
Interference Exposure
Semiconductor Substrates
45 patents (USPTO):Explore Patents

Title: Unveiling the Innovations of Isamu Akasaki

Introduction: Isamu Akasaki, a visionary inventor hailing from Nagoya, Japan, has made significant contributions to the field of semiconductor technology, boasting an impressive portfolio of 44 patents. His groundbreaking work has revolutionized the world of semiconductor light-emitting devices, paving the way for enhanced efficiency and performance in this crucial industry.

Latest Patents:

1. Semiconductor light emitting device and manufacturing method of semiconductor light emitting device: This patent introduces a semiconductor light emitting device with a unique structure, including a growth substrate, pillar-shaped semiconductor layer, buried semiconductor layer, n-type nanowire layer, active layer, p-type semiconductor layer, and tunnel junction layer. The innovation lies in the removed region within the pillar-shaped semiconductor layer, enhancing the device's functionality.

2. Group III nitride semiconductor light-emitting device and production method therefor: This patent focuses on improving the light extraction efficiency of Group III nitride semiconductor light-emitting devices while mitigating polarization effects caused by Al composition variation. By strategically designing the p-type contact layers with varying Al composition rates, the efficiency and performance of the device are significantly enhanced.

Career Highlights: Isamu Akasaki has left an indelible mark on the semiconductor industry through his tenure at reputable companies such as Toyoda Gosei Co., Ltd. His innovative spirit and dedication to enhancing semiconductor technology have led to numerous breakthroughs that have reshaped the landscape of the industry.

Collaborations: Throughout his illustrious career, Isamu Akasaki has collaborated with esteemed professionals in the field, including Hiroshi Amano and Norikatsu Koide. Together, they have synergized their expertise to push the boundaries of semiconductor technology and drive innovation forward.

Conclusion: Isamu Akasaki's relentless pursuit of innovation and unwavering commitment to excellence have positioned him as a trailblazer in the semiconductor industry. His patents and collaborations reflect a legacy of transformative contributions that continue to inspire and shape the future of semiconductor technology.

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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