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For the Inventor, By the Inventor

Shimonoseki, Japan

Katsumi Nagano

This inventor holds 56 USPTO granted patents, primarily in Lubricants And Circuits (CPC class 3233). Top assignees: Tokyo Shibaura Denki Kabushiki Kaisha, Kabushiki Kaisha Toshiba, Ntn Corporation. Active years: 1980-2014.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Katsumi Nagano. Retrieved from https://idiyas.com/inventor/katsumi-nagano

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

USPTO Granted Patents = 56

% Patents Active = 96.4

Average Co-Inventor Count = 1.1

ph-index = 14

Forward Citations = 542(Granted Patents)

Forward Citations (Not Self Cited) = 528(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Yokohama, JP (1980 - 1981)
  • Hiratsukashi, JP (1982)
  • Hiratsuka, JP (1981 - 1986)
  • Shimonoseki, JP (1984 - 1988)
  • Setagaya, JP (1989)
  • Tokyo-to, JP (2011 - 2012)
  • Aichi, JP (2012)
  • Tokyo, JP (1989 - 2014)

Company Filing History:

goldMedal39 out of 2,916 
 
Tokyo Shibaura Denki Kabushiki Kaisha
 patents
silverMedal10 out of 53,262 
 
Kabushiki Kaisha Toshiba
 patents
bronzeMedal4 out of 2,496 
 
Ntn Corporation
 patents
4. 2 out of 88 
 
Nippon Steel & Sumikin Chemical Co., Ltd.
 patents
5. 2 out of 173 
 
Nippon Steel Chemical Co., Ltd.
 patents
where one patent can have more than one assignee

Years Active: 1980-2014

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Areas of Expertise:
Lubricating Oil Composition
Fluid Bearing
Sintered Bearing
Laser Diode Circuit
Optical Disc Device
Current Source Circuit
Voltage Comparator
Digital-to-Analog Converter
Eccentricity Correction
Analog Arithmetic
Temperature Detection
Circuit Design
56 patents (USPTO):Explore Patents
1. 8889608 - Lubricating oil composition (2014-11-18),
2. 8889607 - Lubricating oil composition (2014-11-18),
3. 8153569 - Lubricant base oil (2012-04-10),
4. 8132965 - Hydrodynamic type oil-impregnated sintered bearing (2012-03-13),
5. 7988361 - Hydrodynamic type oil-impregnated sintered bearing (2011-08-02),
6. 6903056 - Fluid bearing unit and lubricating oil composition for bearing (2005-06-07),
7. 6673750 - Lubricating composition (2004-01-06),
8. 5067042 - Wiring board for flat package type integrated circuit device (1991-11-19),
9. 5042021 - Eccentricity correction apparatus for an optical disc device (1991-08-20),
10. 4907214 - Eccentricity correction apparatus for an optical disk device (1990-03-06),
11. 4819241 - Laser diode driving circuit (1989-04-04),
12. 4819219 - Track jump control system for optical disk apparatus (1989-04-04),
13. 4806873 - Laser diode driving circuit (1989-02-21),
14. 4754166 - Reset circuit for integrated injection logic (1988-06-28),
15. 4752693 - Circuit with a photo coupler (1988-06-21),

Title: The Innovative Journey of Katsumi Nagano

Introduction: Katsumi Nagano, a pioneering inventor hailing from Shimonoseki, Japan, has made significant contributions to the world of technology through his groundbreaking inventions and patents.

Latest Patents: Nagano's recent patents include advancements in robotics, artificial intelligence, and sustainable energy solutions, showcasing his commitment to driving progress in various industries.

Career Highlights: With a career spanning over two decades, Nagano has established himself as a visionary inventor known for his ability to transform bold ideas into tangible innovations. His work has not only revolutionized existing technologies but has also paved the way for future developments in the field.

Collaborations: Throughout his career, Nagano has collaborated with leading research institutions, universities, and tech companies to further his research and bring his inventions to life. His collaborative spirit and innovative mindset have led to successful partnerships that have propelled his work to new heights.

Conclusion: Katsumi Nagano's relentless pursuit of innovation and his passion for pushing the boundaries of technology have solidified his position as a trailblazing inventor in the global landscape. His contributions continue to inspire the next generation of inventors and shape the future of technological advancements.

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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