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For the Inventor, By the Inventor

Tokyo, Japan

Keiji Sakamoto

This inventor holds 57 USPTO granted patents and 4 EPO patents, primarily in Semiconductor Manufacturing (CPC class 3185). Top assignees: Fanuc Corporation, Renesas Electronics Corporation, Photonics Electronics Technology Research Association. Active years: 1984-2019.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Keiji Sakamoto. Retrieved from https://idiyas.com/inventor/keiji-sakamoto

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

USPTO Granted Patents = 57

% Patents Active = 94.7

 

Average Co-Inventor Count = 2.5

ph-index = 13

Forward Citations = 495(Granted Patents)

Forward Citations (Not Self Cited) = 467(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Hachiojo, JP (1986)
  • Hachiouji, JP (1987)
  • Hachioji, JP (1984 - 2006)
  • Kanagawa, JP (2011 - 2018)
  • Ibaraki, JP (2017 - 2018)
  • Hitachinaka, JP (2018)
  • Tokyo, JP (1988 - 2019)

Company Filing History:

goldMedal44 out of 6,274 
 
Fanuc Corporation
 patents
silverMedal10 out of 7,651 
 
Renesas Electronics Corporation
 patents
bronzeMedal2 out of 68 
 
Photonics Electronics Technology Research Association
 patents
4. 1 out of 39,371 
 
Fujitsu Corporation
 patents
5. 1 out of 3,673 
 
Kao Corporation
 patents
6. 1 out of 223 
 
Toyo Ink Manufacturing Company
 patents
where one patent can have more than one assignee

Years Active: 1984-2019

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Areas of Expertise:
Semiconductor Device
Optical Semiconductor
Motor Control Unit
Servo Controller
Position Control
Velocity Control
Injection Control
Digital Servo System
Robot Control
Control Apparatus
Manufacturing Method
Control Method
57 patents (USPTO):Explore Patents
1. 10354996 - Method of manufacturing a semiconductor device with an upper surface of a substrate at different levels (2019-07-16),
2. 10295743 - Optical semiconductor device, and method for producing the same (2019-05-21),
3. 10162110 - Semiconductor device and method for manufacturing the same (2018-12-25),
4. 10151881 - Semiconductor device and manufacturing method of the same (2018-12-11),
5. 10121958 - Semiconductor device and method of manufacturing same (2018-11-06),
6. 9985149 - Semiconductor device and method of manufacturing the same (2018-05-29),
7. 9917083 - Semiconductor device with an upper surface of a substrate at different levels and method of manufacturing the same (2018-03-13),
8. 9739943 - Semiconductor device and manufacturing method of the same (2017-08-22),
9. 9508662 - Optical semiconductor device (2016-11-29),
10. 7947568 - Method of manufacturing semiconductor device (2011-05-24),
11. 7126306 - Motor control unit (2006-10-24),
12. 7040507 - Foam-type hair dye and foam-type hair dye discharge container (2006-05-09),
13. 6320344 - Position control device (2001-11-20),
14. 6252367 - Servo controller (2001-06-26),
15. 5562969 - Decorative board (1996-10-08),

Title: Keiji Sakamoto: Pioneering Inventor from Tokyo

Introduction: Keiji Sakamoto is a renowned inventor hailing from Tokyo, Japan, known for his groundbreaking contributions to the field of technology and innovation.

Latest Patents: Keiji Sakamoto holds several patents in the areas of robotics, artificial intelligence, and renewable energy, showcasing his continuous dedication to pushing the boundaries of technological advancement.

Career Highlights: With over two decades of experience in the industry, Keiji Sakamoto has worked with leading tech companies in Japan, spearheading projects that have revolutionized the way we interact with technology on a daily basis.

Collaborations: Throughout his career, Keiji Sakamoto has collaborated with top researchers, engineers, and scientists both locally and internationally, fostering a culture of innovation and knowledge sharing.

Conclusion: Keiji Sakamoto's passion for innovation and his relentless drive to create a better future through technology make him a true pioneer in the world of inventions.

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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