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For the Inventor, By the Inventor

Kanagawa, Japan

Takeshi Fujii

This inventor holds 64 USPTO granted patents and 6 published patent applications and 9 EPO patents, primarily in Nanofiber Technology (CPC class B32B). Top assignees: Fuji Photo Film Company, Limited, Fujifilm Corporation, Panasonic Corporation. Active years: 1995-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Takeshi Fujii. Retrieved from https://idiyas.com/inventor/takeshi-fujii

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

USPTO Granted Patents = 64 

% Patents Active = 59.4

 

Average Co-Inventor Count = 2.7

ph-index = 9

Forward Citations = 220(Granted Patents)

Forward Citations (Not Self Cited) = 213(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Hadano, JP (2008)
  • Minami-ashigara, JP (2013)
  • Ashigarakami-gun, JP (2013)
  • Hiratsuka, JP (2014 - 2015)
  • Kanagawa, JP (1995 - 2018)
  • Osaka, JP (2008 - 2021)
  • Tokyo, JP (2018 - 2023)

Company Filing History:

goldMedal18 out of 16,458 
 
Fuji Photo Film Company, Limited
 patents
silverMedal12 out of 16,949 
 
Fujifilm Corporation
 patents
bronzeMedal12 out of 16,454 
 
Panasonic Corporation
 patents
4. 10 out of 13,338 
 
Panasonic Intellectual Property Management Co., Ltd.
 patents
5. 5 out of 343 
 
Nippon Paper Industries Co., Ltd.
 patents
6. 4 out of 864 
 
Kansai Paint Company, Ltd.
 patents
7. 3 out of 1,279 
 
Fuji Photo Optical Co., Ltd.
 patents
8. 3 out of 695 
 
Fujinon Corporation
 patents
9. 1 out of 10 
 
Kyowa Limited
 patents
10. 1 out of 12 
 
Pansonic Corporation
 patents
11. 1 out of 4,544 
 
Sumitomo Rubber Industries Limited
 patents
12. 1 out of 651 
 
Yanmar Co., Ltd.
 patents
where one patent can have more than one assignee

Years Active: 1995-2026

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Areas of Expertise:
Varistor
Nanofiber
Electronic Control Device
Thermal Conduction
Battery Pack
Instant Film
Coating Composition
Signal Processing
Communication Module
Receiver
Encoder
Physical Quantity Detection
64 patents (USPTO):Explore Patents
1. 12518897 - Varistor component (2026-01-06),
2. 12500795 - Electronic control device (2025-12-16),
3. 12224090 - Multilayer varistor (2025-02-11),
4. 11591721 - Acid-type carboxymethylated cellulose nanofiber and production method thereof (2023-02-28),
5. 11591412 - Carboxymethylated cellulose nanofibers (2023-02-28),
6. 11578142 - Acid type carboxylated cellulose nanofiber (2023-02-14),
7. 11443883 - Reactor device (2022-09-13),
8. 11105789 - Method for evaluating cellulose nanofiber dispersion, cellulose nanofiber aqueous dispersion, and cellulose nanofiber-containing food, cosmetic, and rubber composition (2021-08-31),
9. 11040643 - Insulating sheet, and backrest seat and cold weather garment employing the same (2021-06-22),
10. 10985416 - Thermal conduction sheet and secondary battery pack using same (2021-04-20),
11. 10948120 - Heat insulating sheet (2021-03-16),
12. 10923784 - Heat-conductive sheet and battery pack using same (2021-02-16),
13. 10900813 - Encoder signal processing device, printer, printer-equipped imaging apparatus, and encoder signal processing method (2021-01-26),
14. 10766274 - Printer, printer-equipped imaging apparatus, and printing control method (2020-09-08),
15. 10613431 - Instant film pack and image recording device (2020-04-07),

Title: Takeshi Fujii: A Pioneering Innovator in Nanotechnology and Electrical Components

Introduction

Takeshi Fujii is a renowned inventor based in Kanagawa, Japan, with an impressive portfolio of 62 patents. His work has significantly contributed to advancements in nanotechnology and electrical components, marking him as a leading figure in these fields.

Latest Patents

Among his most recent innovations, Fujii has developed a multilayer varistor, which features a sophisticated stack structure consisting of several layers arranged in a third direction. This multilayer varistor includes three internal electrodes, each connected to external electrodes, providing a unique configuration aimed at enhancing electric performance.

Another notable invention is the acid-type carboxymethylated cellulose nanofiber, which addresses the challenges of viscosity during the preparation of dispersion liquids. This innovation boasts a specific degree of substitution with carboxymethyl groups and meets rigorous viscosity standards, showcasing Fujii's commitment to functional and practical applications in material science.

Career Highlights

Throughout his career, Fujii has had the opportunity to work with leading companies, including Fuji Photo Film Company, Limited and Panasonic Corporation. His tenure at these organizations has allowed him to refine his skills and push the boundaries of technology through innovative research and development.

Collaborations

Fujii has collaborated with other distinguished professionals in the industry, such as Yoji Okazaki and Kazuhiko Nagano. These partnerships have not only facilitated knowledge sharing but have also led to groundbreaking advancements in their respective fields.

Conclusion

Takeshi Fujii's contributions to technology, particularly through his patents and collaborative efforts, underscore his status as a visionary inventor. His work continues to inspire future innovations in nanotechnology and electrical components, ensuring his legacy within the realm of scientific advancement.

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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