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For the Inventor, By the Inventor

Shizuoka, Japan

Naoki Nakamura

This inventor holds 17 USPTO granted patents, primarily in Fuel Cell Technology. Top assignees: Toyota Jidosha Kabushiki Kaisha, Hamamatsu-Photonics K.k., Nagoya University. Active years: 1993-2025.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Naoki Nakamura. Retrieved from https://idiyas.com/inventor/naoki-nakamura-g0k34j0c

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

Calculating rank
USPTO Granted Patents = 17

% Patents Active = 70.6

Average Co-Inventor Count = 1.9

ph-index = 4

Forward Citations = 39(Granted Patents)


Location History:

  • Shizuoka, JP (1993 - 1999)
  • Mishima, JP (1998 - 2000)
  • Nagoya, JP (2004)
  • Suntou-gun, JP (2006)
  • Toyota, JP (2016 - 2017)
  • Shizuoka-ken, JP (2002 - 2022)
  • Nagaizumi-cho, JP (2024)

Company Filing History:

goldMedal16 out of 39,010 
 
Toyota Jidosha Kabushiki Kaisha
 patents
silverMedal2 out of 3,143 
 
Hamamatsu-Photonics K.k.
 patents
bronzeMedal2 out of 371 
 
Nagoya University
 patents
4. 1 out of 443 
 
Hokkaido University
 patents
5. 1 out of 576 
 
National Institute for Materials Science
 patents
6. 1 out of 94 
 
Pola Chemical Industries, Inc.
 patents
7. 1 out of 4,378 
 
Toyota Motor Engineering & Manufacturing North America, Inc.
 patents
8. 1 out of 834,601 
Other
 patents
where one patent can have more than one assignee

Years Active: 1993-2025

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Areas of Expertise:
Proton Conductive Material
Fuel Cells
Antioxidant
Proton Conducting Film
Laser Fusion Device
Neutron Generation
Anisotropic Magnetic Material
Gas Occluding Material
Nonlinear Optical Silica
Thin Film Manufacturing
Hydrogen Production
Cosmetic Product
17 patents (USPTO):Explore Patents
1. 12486399 - Proton conductive material (2025-12-02),
2. 11973250 - Antioxidant for fuel cells to improve durability (2024-04-30),
3. 11322764 - Proton conducting film having crosslinked structure and fuel cell (2022-05-03),
4. 10950882 - Proton-conductive membrane and fuel cell (2021-03-16),
5. 9805829 - Laser fusion device and nuclear fusion generating method (2017-10-31),
6. 9363882 - Neutron generation target, device, and method (2016-06-07),
7. 8092777 - Process for producing anisotropic magnetic material and anisotropic magnetic material (2012-01-10),
8. 7060653 - Method of producing gas occluding material (2006-06-13),
9. 6810721 - Submerged sample observation apparatus and method (2004-11-02),
10. 6776031 - Submerged sample observation apparatus and method (2004-08-17),
11. 6376086 - Nonlinear optical silica material and nonlinear optical device (2002-04-23),
12. 6358572 - Method for manufacturing a nonlinear optical thin film (2002-03-19),
13. 6057233 - Process for producing thin film (2000-05-02),
14. 5914093 - Process for simultaneously producing hydrogen and carbon black (1999-06-22),
15. 5908666 - Process for producing Langmuir-Blodgett film (1999-06-01),

Title: Naoki Nakamura: Innovator in Fuel Cell Technology

Introduction

Naoki Nakamura is a prominent inventor based in Shizuoka-ken, Japan. He has made significant contributions to the field of fuel cell technology, holding a total of 16 patents. His innovative work focuses on enhancing the durability and efficiency of fuel cells through advanced materials and designs.

Latest Patents

One of Nakamura's latest patents involves an antioxidant for fuel cells aimed at improving durability. This invention includes membrane-electrode assemblies and fuel cells that feature an anode with a first catalyst, a cathode with a second catalyst, and a proton exchange membrane. Notably, at least one of these components incorporates an antioxidant made from yttrium doped cerium oxide and a metal doped cerium oxide, which has a faster release time of cerium ions compared to its yttrium counterpart. Another significant patent is for a proton conducting film that has a crosslinked structure. This film consists of a polymer with two connected parts and a plasticizer. The first part aggregates to form a domain at the operational temperature, while the second part crosslinks these domains. The plasticizer, which contains a proton donating compound, lowers the glass transition temperature of the polymer, enhancing its performance.

Career Highlights

Nakamura has worked with notable companies such as Toyota Motor Corporation and Hamamatsu Photonics K.K. His experience in these organizations has allowed him to develop and refine his innovative ideas in fuel cell technology.

Collaborations

Throughout his career, Nakamura has collaborated with esteemed colleagues, including Hiroshi Hasegawa and Takashi Sekine. These partnerships have contributed to the advancement of his research and the successful development of his patents.

Conclusion

Naoki Nakamura is a distinguished inventor whose work in fuel cell technology has led to numerous patents and advancements in the field. His innovative approaches continue to influence the development of more efficient and durable fuel cells.

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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