Kawasaki, Japan

Kouichi Nagai

This inventor holds 80 USPTO granted patents and 9 published patent applications and 2 EPO patents, primarily in Cosmetic Technology (CPC class H01L). Top assignees: Fujitsu Semiconductor Limited, Shiseido Company, Limited, Fujitsu Microelectronics Limited. Active years: 1984-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kouichi Nagai. Retrieved from https://idiyas.com/inventor/kouichi-nagai

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

USPTO Granted Patents = 80 

% Patents Active = 28.8

 

Average Co-Inventor Count = 1.6

ph-index = 7

Forward Citations = 185(Granted Patents)

Forward Citations (Not Self Cited) = 170(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Kawasaki, JP (2003 - 2016)
  • Yokohama, JP (2013 - 2022)
  • Kanagawa, JP (2022)
  • Tokyo, JP (1984 - 2023)

Company Filing History:


Years Active: 1984-2026

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Areas of Expertise:
Emulsification Composition
UV Wavelength Conversion
Cosmetic Preparation
Durable Sunscreen
Semiconductor Device
Ferroelectric Memory
Moisture Blocking
Film Thickness Monitoring
Transparent Cosmetic
Heat Treatment Apparatus
Memory Device Manufacturing
External Damage Protection
80 patents (USPTO):Explore Patents

Title: Kouichi Nagai: A Visionary Inventor Shaping the Future of Technology

Introduction:

Kouichi Nagai, an esteemed inventor hailing from Kawasaki, JP, has carved a path of innovation and creativity in the world of inventions. With a portfolio boasting an impressive 74 patents, Nagai's relentless pursuit of creating groundbreaking technologies has positioned him as a true visionary in the industry.

Latest Patents:

Among his recent triumphs, Nagai's latest patents showcase his ingenuity and forward-thinking approach to product development. The oil-based cosmetic he innovated presents a revolutionary property where ultraviolet protection effects intensify with heat exposure. Additionally, his cosmetic preparation patent offers enhanced ultraviolet protection that remains effective even upon contact with moisture or perspiration, all while excelling in the usage environment.

Career Highlights:

Throughout his career, Nagai has made significant contributions to renowned companies, including Fujitsu Semiconductor Limited and Fujitsu Microelectronics Limited. His innovative spirit and dedication to advancing technology have not only transformed the cosmetic industry but have also left a lasting impact on the broader technological landscape.

Collaborations:

Nagai's success is also attributed to the invaluable collaborations he has fostered with esteemed coworkers such as Hideaki Kikuchi and Kaoru Saigoh. Together, they have harnessed their collective expertise to drive forward-thinking initiatives and bring cutting-edge inventions to fruition.

Conclusion:

In conclusion, Kouichi Nagai's unwavering commitment to innovation and his passion for creating a better future through technology have positioned him as a true luminary in the field of inventions. His groundbreaking patents and collaborative efforts stand as a testament to his visionary approach, shaping the technological landscape for years 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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