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For the Inventor, By the Inventor

Tokyo, Japan

Kenji Yamaguchi

This inventor holds 52 USPTO granted patents and 2 published patent applications and 10 EPO patents, primarily in Semiconductor Technology (CPC class C23C). Top assignees: Mitsubishi Materials Corporation, Ebara Corporation, Renesas Technology Corp.. Active years: 1990-2022.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kenji Yamaguchi. Retrieved from https://idiyas.com/inventor/kenji-yamaguchi

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

Calculating rank
USPTO Granted Patents = 52 

% Patents Active = 86.5

 

Average Co-Inventor Count = 2.4

ph-index = 9

Forward Citations = 289(Granted Patents)

Forward Citations (Not Self Cited) = 264(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Omiya, JP (2002 - 2003)
  • Saitama, JP (2003)
  • Ikoma, JP (2006)
  • Naka-gun, JP (2016 - 2017)
  • Naka, JP (2017 - 2021)
  • Tokyo, JP (1990 - 2022)

Company Filing History:

goldMedal14 out of 1,556 
 
Mitsubishi Materials Corporation
 patents
silverMedal10 out of 2,581 
 
Ebara Corporation
 patents
bronzeMedal5 out of 3,781 
 
Renesas Technology Corp.
 patents
4. 5 out of 23 
 
Sanwa Shutter Corporation
 patents
5. 4 out of 21,351 
 
Mitsubishi Denki Kabushiki Kaisha
 patents
6. 4 out of 1,415 
 
Yokogawa Electric Corporation
 patents
7. 2 out of 7,659 
 
Renesas Electronics Corporation
 patents
8. 2 out of 90 
 
Sumitomo Mitsubishi Silicon Corporation
 patents
9. 1 out of 53,286 
 
Kabushiki Kaisha Toshiba
 patents
10. 1 out of 24 
 
Mitsubushi Denki Kabushiki Kaisha
 patents
11. 1 out of 6 
 
Nansin Co., Ltd.
 patents
12. 1 out of 36,735 
 
Nec Corporation
 patents
13. 1 out of 51 
 
Nihon Micro Coating Co., Ltd.
 patents
14. 1 out of 10,933 
 
Tokyo Electron Limited
 patents
15. 2 out of 834,601 
Other
 patents
where one patent can have more than one assignee

Years Active: 1990-2022

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Areas of Expertise:
Semiconductor Device
Polishing Apparatus
Substrate Processing
Surface-Coated Cutting Tool
Characteristic Evaluation
Field-Effect Transistor
Hard Coating Layer
Optical Material
Device Characteristics
Luminescent Substance
52 patents (USPTO):Explore Patents
1. 11485397 - Trolley coupling structure (2022-11-01),
2. 11007578 - Surface-coated cutting tool (2021-05-18),
3. 10710168 - Surface-coated cutting tool in which hard coating layer exhibits excellent chipping resistance (2020-07-14),
4. 10456844 - Surface-coated cutting tool (2019-10-29),
5. 10456842 - Surface-coated cutting tool in which hard coating layer exhibits excellent chipping resistance (2019-10-29),
6. 10456841 - Surface-coated cutting tool in which hard coating layers exhibits excellent chipping resistance (2019-10-29),
7. 10329671 - Surface-coated cutting tool having hard coating layer that exhibits excellent chipping resistance (2019-06-25),
8. 10307831 - Surface coating cutting tool (2019-06-04),
9. 10307830 - Surface-coated cutting tool having hard coating layer that exhibits excellent chipping resistance (2019-06-04),
10. 10265785 - Surface-coated cutting tool and method for producing the same (2019-04-23),
11. 10166647 - Polishing apparatus and polishing method (2019-01-01),
12. 9797040 - Surface coated cutting tool (2017-10-24),
13. 9782830 - Surface-coated cutting tool (2017-10-10),
14. 9562942 - Probe apparatus (2017-02-07),
15. 9517544 - Polishing apparatus and polishing method (2016-12-13),

Title: Kenji Yamaguchi - Pioneering Inventor from Tokyo

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

Latest Patents: Kenji Yamaguchi holds several patents in the areas of robotics, artificial intelligence, and renewable energy technologies, showcasing his versatility and forward-thinking approach to invention.

Career Highlights: With a career spanning over two decades, Kenji Yamaguchi has worked with leading research institutions and tech companies in Japan, spearheading projects that have revolutionized various industries. His innovative solutions have earned him recognition both locally and internationally.

Collaborations: Throughout his career, Kenji Yamaguchi has collaborated with top engineers, scientists, and designers to bring his ideas to life. His ability to work in multidisciplinary teams has led to the development of cutting-edge products and technologies.

Conclusion: Kenji Yamaguchi's passion for innovation and his relentless drive to push the boundaries of what is possible make him a true trailblazer in the world of invention. His work continues to inspire the next generation of inventors and innovators worldwide.

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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