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For the Inventor, By the Inventor

Sayama, Japan

Takashi Akiyama

This inventor holds 69 USPTO granted patents and 2 published patent applications and 16 EPO patents, primarily in LED Technology (CPC class H05B). Top assignees: Citizen Watch Company, Ltd., Citizen Electronics Co., Ltd., Citizen Holdings Company, Ltd.. Active years: 1987-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Takashi Akiyama. Retrieved from https://idiyas.com/inventor/takashi-akiyama

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

USPTO Granted Patents = 69 

% Patents Active = 63.8

 

Average Co-Inventor Count = 2.1

ph-index = 12

Forward Citations = 802(Granted Patents)

Forward Citations (Not Self Cited) = 789(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Yamanashi-ken, JP (2013)
  • Yamanashi, JP (2015)
  • Saitama-ken, JP (2015 - 2017)
  • Saitama, JP (1997 - 2018)
  • Fujiyoshida, JP (2018)
  • Sayama, JP (1997 - 2019)
  • Tokyo, JP (1987 - 2022)

Company Filing History:

goldMedal32 out of 2,004 
 
Citizen Watch Company, Ltd.
 patents
silverMedal28 out of 608 
 
Citizen Electronics Co., Ltd.
 patents
bronzeMedal28 out of 450 
 
Citizen Holdings Company, Ltd.
 patents
4. 3 out of 711 
 
Max Co., Ltd.
 patents
5. 2 out of 16,602 
 
Mitsubishi Electric Corporation
 patents
6. 2 out of 362 
 
Suntory Holdings Limited
 patents
7. 1 out of 1,772 
 
Kaneka Corporation
 patents
8. 1 out of 23 
 
San-Ei Kagaku Co., Ltd.
 patents
where one patent can have more than one assignee

Years Active: 1987-2026

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Areas of Expertise:
LED Drive Circuit
LED Module
Light-Emitting Diode
LED Illumination Device
Display Apparatus
Lighting Device
Thrust Measuring Device
Binding Machine
Color Display Device
Packaging
Resin Container
Machining Head
69 patents (USPTO):Explore Patents
1. 12741409 - Method for producing molded body containing poly-3-hydroxybutyrate-based resin, and use of same (2026-09-22),
2. 12331534 - Binding machine (2025-06-17),
3. 11365552 - Binding machine (2022-06-21),
4. 11261002 - Resin made container (2022-03-01),
5. 11231336 - Thrust measuring device (2022-01-25),
6. 10433381 - LED drive circuit (2019-10-01),
7. 10182486 - LED drive circuit (2019-01-15),
8. 10044289 - LED drive circuit including a plurality of LEDs connected in series (2018-08-07),
9. 10026877 - LED module (2018-07-17),
10. 9887185 - Packaging of LED chips and driver circuit on the same substrate (2018-02-06),
11. 9860944 - LED driver circuit (2018-01-02),
12. 9854631 - LED illumination device (2017-12-26),
13. 9841171 - Light-emitting device and lighting appliance including the light-emitting device (2017-12-12),
14. D789309 - Light-emitting diode (2017-06-13),
15. D788721 - Light-emitting diode (2017-06-06),

Title: The Innovative Journey of Takashi Akiyama

Introduction: Takashi Akiyama, a visionary inventor hailing from Sayama, Japan, has made significant contributions to the world of technology through his groundbreaking inventions and patents.

Latest Patents: Takashi Akiyama's recent patents focus on advancements in renewable energy technologies, particularly in the field of solar power generation and energy storage solutions. His innovative approach has garnered attention for its potential to revolutionize the way we harness and utilize clean energy sources.

Career Highlights: With a career spanning over two decades, Takashi Akiyama has established himself as a leading figure in the tech industry. His journey began with a passion for exploring the intersection of science and engineering, leading him to develop cutting-edge solutions that address pressing global challenges.

Collaborations: Throughout his career, Takashi Akiyama has collaborated with top research institutions, universities, and leading tech companies to bring his inventions to life. His collaborative spirit and dedication to innovation have resulted in successful partnerships that have propelled his work to new heights.

Conclusion: Takashi Akiyama's relentless pursuit of innovation and commitment to creating a sustainable future through technology make him a true pioneer in the field of renewable energy. His contributions continue to inspire and shape the landscape of clean energy solutions for generations 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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