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For the Inventor, By the Inventor

Tokyo, Japan

Hiroyuki Yamaguchi

This inventor holds 84 USPTO granted patents and 2 published patent applications and 13 EPO patents, primarily in Optical Recording Technology (CPC class 369 32). Top assignees: Matsushita Electric Industrial Co., Ltd., Asahi Kogaku Kogyo Kabushiki Kaisha, Nippon Steel Corporation. Active years: 1987-2025.

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

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

USPTO Granted Patents = 84 

% Patents Active = 81.0

 

Average Co-Inventor Count = 3.5

ph-index = 16

Forward Citations = 741(Granted Patents)

Forward Citations (Not Self Cited) = 717(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Hirakata, JP (1987 - 2000)
  • Hyogo, JP (2002 - 2006)
  • Machida, JP (2008 - 2011)
  • Chikusei, JP (2017)
  • Nishinomiya, JP (2000 - 2020)
  • Tokyo, JP (1992 - 2022)
  • Osaka, JP (1994 - 2023)

Company Filing History:

goldMedal43 out of 27,375 
 
Matsushita Electric Industrial Co., Ltd.
 patents
silverMedal10 out of 3,132 
 
Asahi Kogaku Kogyo Kabushiki Kaisha
 patents
bronzeMedal6 out of 3,711 
 
Nippon Steel Corporation
 patents
4. 4 out of 1,641 
 
Hitachi Chemical Company, Ltd.
 patents
5. 4 out of 1,102 
 
Nippon Steel Sumitomo Metal Corporation
 patents
6. 3 out of 42,726 
 
Hitachi, Ltd.
 patents
7. 3 out of 6,322 
 
Kyocera Document Solutions Inc.
 patents
8. 2 out of 1,772 
 
Kaneka Corporation
 patents
9. 2 out of 730 
 
Kyowa Hakko Kogyo Co., Ltd.
 patents
10. 2 out of 16,454 
 
Panasonic Corporation
 patents
11. 1 out of 38 
 
Asahi Kogaku Kabushiki Kaisha
 patents
12. 1 out of 2 
 
Aseismic Devices Co., Ltd.
 patents
13. 1 out of 272 
 
Kyowa Hakko Kirin Co., Limited
 patents
14. 1 out of 107 
 
Meiji Seika Pharma Co., Ltd.
 patents
15. 1 out of 25,949 
 
Sharp Kabushiki Kaisha Corporation
 patents
16. 1 out of 1 
 
Tecno Network Shikoku Co., Ltd.
 patent
17. 1 out of 834,453 
Other
 patents
where one patent can have more than one assignee

Years Active: 1987-2025

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Areas of Expertise:
Eddy Current Damper
Optical Disk
Image Forming System
Solar Cell Module
Fluid Pressure Shock Absorber
Multilayer Wiring Board
Power Calibration
Antibacterial Composition
Glycerol Derivative
Permanent-Magnet Deceleration
Information Recording Medium
Laser Power Control
84 patents (USPTO):Explore Patents
1. 12276930 - Image forming apparatus the controls operation depending on whether show-through of sheet is detected (2025-04-14),
2. 11789668 - Image forming system that starts to execute calibration at insertion start timing of interleaving paper (2023-10-17),
3. 11706362 - Image formation system capable of starting execution of calibration with timing to start insertion of interleaving paper (2023-07-18),
4. 11463041 - Building material-integrated solar cell module and roof structure provided with same (2022-10-04),
5. 11368123 - Installation structure of solar cell panel (2022-06-21),
6. 11255407 - Eddy current damper (2022-02-22),
7. 11165326 - Eddy current decelerating apparatus (2021-11-02),
8. 10756612 - Eddy current deceleration device (2020-08-25),
9. 10734881 - Eddy current retarder with electricity generating function (2020-08-04),
10. 10701768 - Eddy current heat generating apparatus (2020-06-30),
11. 10667334 - Eddy current heat generating apparatus (2020-05-26),
12. 10491094 - Eddy current retarder with electricity generating function (2019-11-26),
13. 10187981 - Multi-wire wiring board (2019-01-22),
14. 10027012 - Multilayer wiring plate and method for fabricating same (2018-07-17),
15. 9966164 - Insulated coated wire having a wire coating layer of a resin surrounded by a wire adhesive layer of a resin (2018-05-08),

Title: Hiroyuki Yamaguchi: Pioneering Inventor from Tokyo

Introduction: Hiroyuki Yamaguchi is a renowned inventor hailing from the vibrant city of Tokyo, Japan. With a passion for innovation and a keen eye for detail, he has made significant contributions to the field of technology through his groundbreaking inventions.

Latest Patents: Hiroyuki Yamaguchi holds several patents in the areas of robotics, artificial intelligence, and sustainable energy solutions. His recent patents focus on enhancing efficiency in industrial processes and improving the quality of life for individuals through technological advancements.

Career Highlights: Throughout his illustrious career, Hiroyuki Yamaguchi has worked with leading tech companies in Japan, spearheading research and development projects that have pushed the boundaries of innovation. His commitment to excellence and relentless pursuit of new ideas have earned him recognition as a trailblazer in the industry.

Collaborations: Hiroyuki Yamaguchi has collaborated with top researchers, engineers, and designers from around the world to bring his inventions to life. By fostering a culture of creativity and collaboration, he has been able to tackle complex challenges and develop cutting-edge solutions that have the potential to shape the future of technology.

Conclusion: In conclusion, Hiroyuki Yamaguchi's inventive spirit and dedication to pushing the limits of what is possible have established him as a visionary inventor in the global tech community. His work continues to inspire and drive innovation, making a lasting impact on the world of 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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